annotate xml/en/docs/ngx_core_module.xml @ 1450:f5b5eefc43cb

Updated commercial docs for the upcoming release.
author Ruslan Ermilov <ru@nginx.com>
date Thu, 09 Apr 2015 19:18:54 +0300
parents c79501e16e26
children eea7541e7c6a
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1 <?xml version="1.0"?>
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2
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3 <!--
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4 Copyright (C) Igor Sysoev
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5 Copyright (C) Nginx, Inc.
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6 -->
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7
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8 <!DOCTYPE module SYSTEM "../../../dtd/module.dtd">
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9
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10 <module name="Core functionality"
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11 link="/en/docs/ngx_core_module.html"
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12 lang="en"
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13 rev="13">
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14
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15 <section id="example" name="Example Configuration">
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16
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17 <para>
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18 <example>
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19 user www www;
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20 worker_processes 2;
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21
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22 error_log /var/log/nginx-error.log info;
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23
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24 events {
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25 use kqueue;
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26 worker_connections 2048;
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27 }
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28
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29 ...
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30 </example>
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31 </para>
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32
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33 </section>
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34
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36 <section id="directives" name="Directives">
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37
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38 <directive name="accept_mutex">
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39 <syntax><literal>on</literal> | <literal>off</literal></syntax>
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40 <default>on</default>
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41 <context>events</context>
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42
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43 <para>
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44 If <literal>accept_mutex</literal> is enabled,
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45 worker processes will accept new connections by turn.
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46 Otherwise, all worker processes will be notified about new connections,
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47 and if volume of new connections is low, some of the worker processes
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48 may just waste system resources.
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49 <note>
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50 The use of <link doc="events.xml" id="rtsig"/>
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51 connection processing method
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52 requires <literal>accept_mutex</literal> to be enabled.
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53 </note>
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54 </para>
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55
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56 </directive>
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57
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58
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59 <directive name="accept_mutex_delay">
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60 <syntax><value>time</value></syntax>
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61 <default>500ms</default>
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62 <context>events</context>
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64 <para>
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65 If <link id="accept_mutex"/> is enabled, specifies the maximum time
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66 during which a worker process will try to restart accepting new
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67 connections if another worker process is currently accepting
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68 new connections.
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69 </para>
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70
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71 </directive>
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72
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73
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74 <directive name="daemon">
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75 <syntax><literal>on</literal> | <literal>off</literal></syntax>
102
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76 <default>on</default>
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77 <context>main</context>
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78
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79 <para>
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80 Determines whether nginx should become a daemon.
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81 Mainly used during development.
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82 </para>
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83
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84 </directive>
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85
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86
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87 <directive name="debug_connection">
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88 <syntax>
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89 <value>address</value> |
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90 <value>CIDR</value> |
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91 <literal>unix:</literal></syntax>
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92 <default/>
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93 <context>events</context>
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94
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95 <para>
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96 Enables debugging log for selected client connections.
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97 Other connections will use logging level set by the
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98 <link id="error_log"/> directive.
523
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99 Debugged connections are specified by IPv4 or IPv6 (1.3.0, 1.2.1)
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100 address or network.
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101 A connection may also be specified using a hostname.
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102 For connections using UNIX-domain sockets (1.3.0, 1.2.1),
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103 debugging log is enabled by the “<literal>unix:</literal>” parameter.
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104 <example>
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105 events {
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106 debug_connection 127.0.0.1;
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107 debug_connection localhost;
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108 debug_connection 192.0.2.0/24;
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109 debug_connection ::1;
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110 debug_connection 2001:0db8::/32;
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111 debug_connection unix:;
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112 ...
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113 }
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114 </example>
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115 <note>
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116 For this directive to work, nginx needs to
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117 be built with <literal>--with-debug</literal>,
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118 see “<link doc="debugging_log.xml"/>”.
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119 </note>
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120 </para>
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121
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122 </directive>
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123
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124
574
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125 <directive name="debug_points">
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126 <syntax><literal>abort</literal> | <literal>stop</literal></syntax>
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127 <default/>
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128 <context>main</context>
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129
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130 <para>
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131 This directive is used for debugging.
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132 </para>
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133
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134 <para>
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135 When internal error is detected, e.g. the leak of sockets on
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136 restart of working processes, enabling <literal>debug_points</literal>
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137 leads to a core file creation (<literal>abort</literal>)
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138 or to stopping of a process (<literal>stop</literal>) for further
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139 analysis using a system debugger.
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140 </para>
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141
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142 </directive>
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143
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144
158
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145 <directive name="error_log">
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146 <syntax>
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147 <value>file</value> | <literal>stderr</literal> |
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148 <literal>syslog:</literal><literal>server</literal>=<value>address</value>[,<value>parameter</value>=<value>value</value>] |
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149 <literal>memory:</literal><value>size</value>
271
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150 [<literal>debug</literal> |
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151 <literal>info</literal> |
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152 <literal>notice</literal> |
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153 <literal>warn</literal> |
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154 <literal>error</literal> |
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155 <literal>crit</literal> |
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156 <literal>alert</literal> |
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157 <literal>emerg</literal>]</syntax>
158
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158 <default>logs/error.log error</default>
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159 <context>main</context>
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160 <context>http</context>
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161 <context>stream</context>
158
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162 <context>server</context>
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163 <context>location</context>
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164
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165 <para>
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166 Configures logging.
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167 Several logs can be specified on the same level (1.5.2).
158
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168 </para>
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169
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170 <para>
271
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171 The first parameter defines a file that will store the log.
158
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172 <!--
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173 If filename is not absolute, it is prefixed with the prefix path.
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174 -->
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175 The special value <literal>stderr</literal> selects the standard error file.
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176 Logging to <link doc="syslog.xml">syslog</link> can be configured by specifying
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177 the “<literal>syslog:</literal>” prefix.
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178 Logging to a
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179 <link doc="debugging_log.xml" id="memory">cyclic memory buffer</link>
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180 can be configured by specifying the “<literal>memory:</literal>” prefix and
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181 buffer <value>size</value>, and is generally used for debugging (1.7.11).
158
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182 </para>
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183
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184 <para>
271
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185 The second parameter determines the level of logging.
158
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186 Log levels above are listed in the order of increasing severity.
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187 Setting a certain log level will cause all messages of
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188 the specified and more severe log levels to be logged.
271
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189 For example, the default level <literal>error</literal> will
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190 cause <literal>error</literal>, <literal>crit</literal>,
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191 <literal>alert</literal>, and <literal>emerg</literal> messages
158
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192 to be logged.
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193 If this parameter is omitted then <literal>error</literal> is used.
158
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194 <note>
271
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195 For <literal>debug</literal> logging to work, nginx needs to
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196 be built with <literal>--with-debug</literal>,
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197 see “<link doc="debugging_log.xml"/>”.
158
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198 </note>
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199
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200 <note>
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201 The directive can be specified on the
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202 <literal>stream</literal> level
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203 starting from version 1.7.11.
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204 </note>
158
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205 </para>
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206
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207 </directive>
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208
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209
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210 <directive name="env">
271
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211 <syntax><value>variable</value>[=<value>value</value>]</syntax>
102
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212 <default>TZ</default>
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213 <context>main</context>
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214
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215 <para>
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216 By default, nginx removes all environment variables inherited
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217 from its parent process except the TZ variable.
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218 This directive allows preserving some of the inherited variables,
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219 changing their values, or creating new environment variables.
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220 These variables are then:
63
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221 <list type="bullet">
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222
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223 <listitem>
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224 inherited during a <link doc="control.xml" id="upgrade">live upgrade</link>
63
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225 of an executable file;
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226 </listitem>
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227
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228 <listitem>
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229 used by the
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230 <link doc="http/ngx_http_perl_module.xml">ngx_http_perl_module</link> module;
63
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231 </listitem>
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232
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233 <listitem>
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234 used by worker processes.
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235 One should bear in mind that controlling system libraries in this way
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236 is not always possible as it is common for libraries to check
63
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237 variables only during initialization, well before they can be set
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238 using this directive.
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239 An exception from this is an above mentioned
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240 <link doc="control.xml" id="upgrade">live upgrade</link>
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241 of an executable file.
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242 </listitem>
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243
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244 </list>
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245 </para>
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246
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247 <para>
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248 The TZ variable is always inherited and available to the
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249 <link doc="http/ngx_http_perl_module.xml">ngx_http_perl_module</link>
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250 module, unless it is configured explicitly.
63
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251 </para>
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252
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253 <para>
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254 Usage example:
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255 <example>
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256 env MALLOC_OPTIONS;
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257 env PERL5LIB=/data/site/modules;
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258 env OPENSSL_ALLOW_PROXY_CERTS=1;
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259 </example>
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260 </para>
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261
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262 <para>
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263 <note>
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264 The NGINX environment variable is used internally by nginx
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265 and should not be set directly by the user.
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266 </note>
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267 </para>
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268
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269 </directive>
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270
249
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271
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272 <directive name="events">
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273 <syntax block="yes"/>
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274 <default/>
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275 <context>main</context>
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276
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277 <para>
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278 Provides the configuration file context in which the directives that
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279 affect connection processing are specified.
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280 </para>
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281
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282 </directive>
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283
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284
63
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285 <directive name="include">
271
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286 <syntax><value>file</value> | <value>mask</value></syntax>
63
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287 <default/>
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288 <context/>
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289
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290 <para>
271
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291 Includes another <value>file</value>, or files matching the
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292 specified <value>mask</value>, into configuration.
63
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293 Included files should consist of
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294 syntactically correct directives and blocks.
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295 </para>
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296
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297 <para>
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298 Usage example:
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299 <example>
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300 include mime.types;
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301 include vhosts/*.conf;
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302 </example>
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303 </para>
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304
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305 </directive>
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306
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307
571
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308 <directive name="lock_file">
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309 <syntax><value>file</value></syntax>
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310 <default>logs/nginx.lock</default>
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311 <context>main</context>
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312
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313 <para>
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314 nginx uses the locking mechanism to implement <link id="accept_mutex"/>
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315 and serialize access to shared memory.
571
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316 On most systems the locks are implemented using atomic operations,
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317 and this directive is ignored.
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318 On other systems the “lock file” mechanism is used.
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319 This directive specifies a prefix for the names of lock files.
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320 </para>
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321
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322 </directive>
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323
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324
63
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325 <directive name="master_process">
271
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326 <syntax><literal>on</literal> | <literal>off</literal></syntax>
102
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327 <default>on</default>
63
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328 <context>main</context>
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329
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330 <para>
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331 Determines whether worker processes are started.
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332 This directive is intended for nginx developers.
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333 </para>
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334
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335 </directive>
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336
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337
571
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338 <directive name="multi_accept">
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339 <syntax><literal>on</literal> | <literal>off</literal></syntax>
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340 <default>off</default>
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341 <context>events</context>
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342
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343 <para>
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344 If <literal>multi_accept</literal> is disabled, a worker process
571
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345 will accept one new connection at a time.
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346 Otherwise, a worker process
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347 will accept all new connections at a time.
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348 <note>
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349 The directive is ignored if <link doc="events.xml" id="kqueue"/>
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350 connection processing method is used, because it reports
571
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351 the number of new connections waiting to be accepted.
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352 </note>
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353 <note>
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354 The use of <link doc="events.xml" id="rtsig"/>
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355 connection processing method
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356 automatically enables <literal>multi_accept</literal>.
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357 </note>
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358 </para>
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359
71d775bef043 Documented accept_mutex, accept_mutex_delay, multi_accept, and lock_file.
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360 </directive>
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diff changeset
361
71d775bef043 Documented accept_mutex, accept_mutex_delay, multi_accept, and lock_file.
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diff changeset
362
289
df261b1ce71f Documented the --with-pcre-jit configuration parameter
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diff changeset
363 <directive name="pcre_jit">
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diff changeset
364 <syntax><literal>on</literal> | <literal>off</literal></syntax>
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parents: 271
diff changeset
365 <default>off</default>
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parents: 271
diff changeset
366 <context>main</context>
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diff changeset
367 <appeared-in>1.1.12</appeared-in>
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parents: 271
diff changeset
368
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diff changeset
369 <para>
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370 Enables or disables the use of “just-in-time compilation” (PCRE JIT)
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371 for the regular expressions known by the time of configuration parsing.
289
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diff changeset
372 </para>
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diff changeset
373
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diff changeset
374 <para>
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375 PCRE JIT can speed up processing of regular expressions significantly.
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diff changeset
376 <note>
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diff changeset
377 The JIT is available in PCRE libraries starting from version 8.20
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diff changeset
378 built with the <literal>--enable-jit</literal> configuration parameter.
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379 When the PCRE library is built with nginx (<literal>--with-pcre=</literal>),
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380 the JIT support is enabled via the
289
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diff changeset
381 <literal>--with-pcre-jit</literal> configuration parameter.
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382 </note>
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383 </para>
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384
df261b1ce71f Documented the --with-pcre-jit configuration parameter
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diff changeset
385 </directive>
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diff changeset
386
df261b1ce71f Documented the --with-pcre-jit configuration parameter
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diff changeset
387
63
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388 <directive name="pid">
271
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389 <syntax><value>file</value></syntax>
102
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diff changeset
390 <default>nginx.pid</default>
63
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391 <context>main</context>
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392
6108fd3217e7 Initial English translation of ngx_core_module.
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393 <para>
271
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394 Defines a <value>file</value> that will store the process ID of the main process.
63
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395 </para>
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parents:
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396
6108fd3217e7 Initial English translation of ngx_core_module.
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397 </directive>
6108fd3217e7 Initial English translation of ngx_core_module.
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parents:
diff changeset
398
6108fd3217e7 Initial English translation of ngx_core_module.
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parents:
diff changeset
399
6108fd3217e7 Initial English translation of ngx_core_module.
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400 <directive name="ssl_engine">
271
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diff changeset
401 <syntax><value>device</value></syntax>
63
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diff changeset
402 <default/>
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diff changeset
403 <context>main</context>
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parents:
diff changeset
404
6108fd3217e7 Initial English translation of ngx_core_module.
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diff changeset
405 <para>
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diff changeset
406 Defines the name of the hardware SSL accelerator.
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diff changeset
407 </para>
6108fd3217e7 Initial English translation of ngx_core_module.
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parents:
diff changeset
408
6108fd3217e7 Initial English translation of ngx_core_module.
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409 </directive>
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parents:
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410
6108fd3217e7 Initial English translation of ngx_core_module.
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diff changeset
411
1436
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diff changeset
412 <directive name="thread_pool">
2333e08e277d Documented thread pools.
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diff changeset
413 <syntax>
2333e08e277d Documented thread pools.
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diff changeset
414 <value>name</value>
2333e08e277d Documented thread pools.
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415 <literal>threads</literal>=<value>number</value>
2333e08e277d Documented thread pools.
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diff changeset
416 [<literal>max_queue</literal>=<value>number</value>]</syntax>
2333e08e277d Documented thread pools.
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parents: 1285
diff changeset
417 <default>default threads=32 max_queue=65536</default>
2333e08e277d Documented thread pools.
Ruslan Ermilov <ru@nginx.com>
parents: 1285
diff changeset
418 <context>main</context>
2333e08e277d Documented thread pools.
Ruslan Ermilov <ru@nginx.com>
parents: 1285
diff changeset
419 <appeared-in>1.7.11</appeared-in>
2333e08e277d Documented thread pools.
Ruslan Ermilov <ru@nginx.com>
parents: 1285
diff changeset
420
2333e08e277d Documented thread pools.
Ruslan Ermilov <ru@nginx.com>
parents: 1285
diff changeset
421 <para>
2333e08e277d Documented thread pools.
Ruslan Ermilov <ru@nginx.com>
parents: 1285
diff changeset
422 Defines named thread pools
2333e08e277d Documented thread pools.
Ruslan Ermilov <ru@nginx.com>
parents: 1285
diff changeset
423 used for multi-threaded reading and sending of files
2333e08e277d Documented thread pools.
Ruslan Ermilov <ru@nginx.com>
parents: 1285
diff changeset
424 <link doc="http/ngx_http_core_module.xml" id="aio">without blocking</link>
2333e08e277d Documented thread pools.
Ruslan Ermilov <ru@nginx.com>
parents: 1285
diff changeset
425 worker processes.
2333e08e277d Documented thread pools.
Ruslan Ermilov <ru@nginx.com>
parents: 1285
diff changeset
426 </para>
2333e08e277d Documented thread pools.
Ruslan Ermilov <ru@nginx.com>
parents: 1285
diff changeset
427
2333e08e277d Documented thread pools.
Ruslan Ermilov <ru@nginx.com>
parents: 1285
diff changeset
428 <para>
2333e08e277d Documented thread pools.
Ruslan Ermilov <ru@nginx.com>
parents: 1285
diff changeset
429 The <literal>threads</literal> parameter
2333e08e277d Documented thread pools.
Ruslan Ermilov <ru@nginx.com>
parents: 1285
diff changeset
430 defines the number of threads in the pool.
2333e08e277d Documented thread pools.
Ruslan Ermilov <ru@nginx.com>
parents: 1285
diff changeset
431 </para>
2333e08e277d Documented thread pools.
Ruslan Ermilov <ru@nginx.com>
parents: 1285
diff changeset
432
2333e08e277d Documented thread pools.
Ruslan Ermilov <ru@nginx.com>
parents: 1285
diff changeset
433 <para>
2333e08e277d Documented thread pools.
Ruslan Ermilov <ru@nginx.com>
parents: 1285
diff changeset
434 In the event that all threads in the pool are busy,
2333e08e277d Documented thread pools.
Ruslan Ermilov <ru@nginx.com>
parents: 1285
diff changeset
435 a new task will wait in the queue.
2333e08e277d Documented thread pools.
Ruslan Ermilov <ru@nginx.com>
parents: 1285
diff changeset
436 The <literal>max_queue</literal> parameter limits the number
2333e08e277d Documented thread pools.
Ruslan Ermilov <ru@nginx.com>
parents: 1285
diff changeset
437 of tasks allowed to be waiting in the queue.
2333e08e277d Documented thread pools.
Ruslan Ermilov <ru@nginx.com>
parents: 1285
diff changeset
438 By default, up to 65536 tasks can wait in the queue.
2333e08e277d Documented thread pools.
Ruslan Ermilov <ru@nginx.com>
parents: 1285
diff changeset
439 When the queue overflows, the task is completed with an error.
2333e08e277d Documented thread pools.
Ruslan Ermilov <ru@nginx.com>
parents: 1285
diff changeset
440 </para>
2333e08e277d Documented thread pools.
Ruslan Ermilov <ru@nginx.com>
parents: 1285
diff changeset
441
2333e08e277d Documented thread pools.
Ruslan Ermilov <ru@nginx.com>
parents: 1285
diff changeset
442 </directive>
2333e08e277d Documented thread pools.
Ruslan Ermilov <ru@nginx.com>
parents: 1285
diff changeset
443
2333e08e277d Documented thread pools.
Ruslan Ermilov <ru@nginx.com>
parents: 1285
diff changeset
444
63
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
445 <directive name="timer_resolution">
271
4c6d2c614d2c Cleaned up XML tag mess:
Ruslan Ermilov <ru@nginx.com>
parents: 270
diff changeset
446 <syntax><value>interval</value></syntax>
63
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
447 <default/>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
448 <context>main</context>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
449
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
450 <para>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
451 Reduces timer resolution in worker processes, thus reducing the
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
452 number of <c-func>gettimeofday</c-func> system calls made.
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
453 By default, <c-func>gettimeofday</c-func> is called each time
957
6d9d4bb571a9 Text review of the ngx_core_module.
Egor Nikitin <yegor.nikitin@gmail.com>
parents: 953
diff changeset
454 a kernel event is received.
63
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
455 With reduced resolution, <c-func>gettimeofday</c-func> is only
271
4c6d2c614d2c Cleaned up XML tag mess:
Ruslan Ermilov <ru@nginx.com>
parents: 270
diff changeset
456 called once per specified <value>interval</value>.
63
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
457 </para>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
458
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
459 <para>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
460 Example:
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
461 <example>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
462 timer_resolution 100ms;
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
463 </example>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
464 </para>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
465
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
466 <para>
957
6d9d4bb571a9 Text review of the ngx_core_module.
Egor Nikitin <yegor.nikitin@gmail.com>
parents: 953
diff changeset
467 Internal implementation of the interval depends on the method used:
63
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
468 <list type="bullet">
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
469
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
470 <listitem>
957
6d9d4bb571a9 Text review of the ngx_core_module.
Egor Nikitin <yegor.nikitin@gmail.com>
parents: 953
diff changeset
471 the <c-def>EVFILT_TIMER</c-def> filter if <literal>kqueue</literal> is used;
63
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
472 </listitem>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
473
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
474 <listitem>
271
4c6d2c614d2c Cleaned up XML tag mess:
Ruslan Ermilov <ru@nginx.com>
parents: 270
diff changeset
475 <c-func>timer_create</c-func> if <literal>eventport</literal> is used;
63
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
476 </listitem>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
477
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
478 <listitem>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
479 <c-func>setitimer</c-func> otherwise.
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
480 </listitem>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
481
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
482 </list>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
483 </para>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
484
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
485 </directive>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
486
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
487
556
345012910707 Documented the "events" and "use" directives.
Ruslan Ermilov <ru@nginx.com>
parents: 554
diff changeset
488 <directive name="use">
345012910707 Documented the "events" and "use" directives.
Ruslan Ermilov <ru@nginx.com>
parents: 554
diff changeset
489 <syntax><value>method</value></syntax>
345012910707 Documented the "events" and "use" directives.
Ruslan Ermilov <ru@nginx.com>
parents: 554
diff changeset
490 <default/>
345012910707 Documented the "events" and "use" directives.
Ruslan Ermilov <ru@nginx.com>
parents: 554
diff changeset
491 <context>events</context>
345012910707 Documented the "events" and "use" directives.
Ruslan Ermilov <ru@nginx.com>
parents: 554
diff changeset
492
345012910707 Documented the "events" and "use" directives.
Ruslan Ermilov <ru@nginx.com>
parents: 554
diff changeset
493 <para>
345012910707 Documented the "events" and "use" directives.
Ruslan Ermilov <ru@nginx.com>
parents: 554
diff changeset
494 Specifies the <link doc="events.xml">connection processing</link>
345012910707 Documented the "events" and "use" directives.
Ruslan Ermilov <ru@nginx.com>
parents: 554
diff changeset
495 <value>method</value> to use.
957
6d9d4bb571a9 Text review of the ngx_core_module.
Egor Nikitin <yegor.nikitin@gmail.com>
parents: 953
diff changeset
496 There is normally no need to specify it explicitly, because nginx will
556
345012910707 Documented the "events" and "use" directives.
Ruslan Ermilov <ru@nginx.com>
parents: 554
diff changeset
497 by default use the most efficient method.
345012910707 Documented the "events" and "use" directives.
Ruslan Ermilov <ru@nginx.com>
parents: 554
diff changeset
498 </para>
345012910707 Documented the "events" and "use" directives.
Ruslan Ermilov <ru@nginx.com>
parents: 554
diff changeset
499
345012910707 Documented the "events" and "use" directives.
Ruslan Ermilov <ru@nginx.com>
parents: 554
diff changeset
500 </directive>
345012910707 Documented the "events" and "use" directives.
Ruslan Ermilov <ru@nginx.com>
parents: 554
diff changeset
501
345012910707 Documented the "events" and "use" directives.
Ruslan Ermilov <ru@nginx.com>
parents: 554
diff changeset
502
82
89c31b453d40 Sorted directives alphabetically.
Ruslan Ermilov <ru@nginx.com>
parents: 63
diff changeset
503 <directive name="user">
271
4c6d2c614d2c Cleaned up XML tag mess:
Ruslan Ermilov <ru@nginx.com>
parents: 270
diff changeset
504 <syntax><value>user</value> [<value>group</value>]</syntax>
102
c76a257f3fd4 The directive name is now automatically printed in <default> and <syntax>.
Ruslan Ermilov <ru@nginx.com>
parents: 98
diff changeset
505 <default>nobody nobody</default>
63
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
506 <context>main</context>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
507
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
508 <para>
271
4c6d2c614d2c Cleaned up XML tag mess:
Ruslan Ermilov <ru@nginx.com>
parents: 270
diff changeset
509 Defines <value>user</value> and <value>group</value>
82
89c31b453d40 Sorted directives alphabetically.
Ruslan Ermilov <ru@nginx.com>
parents: 63
diff changeset
510 credentials used by worker processes.
271
4c6d2c614d2c Cleaned up XML tag mess:
Ruslan Ermilov <ru@nginx.com>
parents: 270
diff changeset
511 If <value>group</value> is omitted, a group whose name equals
4c6d2c614d2c Cleaned up XML tag mess:
Ruslan Ermilov <ru@nginx.com>
parents: 270
diff changeset
512 that of <value>user</value> is used.
63
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
513 </para>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
514
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
515 </directive>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
516
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
517
749
2abb92a19101 Documented 'worker_aio_requests' directive.
Vladimir Homutov <vl@nginx.com>
parents: 742
diff changeset
518 <directive name="worker_aio_requests">
2abb92a19101 Documented 'worker_aio_requests' directive.
Vladimir Homutov <vl@nginx.com>
parents: 742
diff changeset
519 <syntax><value>number</value></syntax>
2abb92a19101 Documented 'worker_aio_requests' directive.
Vladimir Homutov <vl@nginx.com>
parents: 742
diff changeset
520 <default>32</default>
2abb92a19101 Documented 'worker_aio_requests' directive.
Vladimir Homutov <vl@nginx.com>
parents: 742
diff changeset
521 <context>events</context>
750
6a1b1ba62cab Documented history of "worker_aio_requests" directive.
Vladimir Homutov <vl@nginx.com>
parents: 749
diff changeset
522 <appeared-in>1.1.4</appeared-in>
6a1b1ba62cab Documented history of "worker_aio_requests" directive.
Vladimir Homutov <vl@nginx.com>
parents: 749
diff changeset
523 <appeared-in>1.0.7</appeared-in>
749
2abb92a19101 Documented 'worker_aio_requests' directive.
Vladimir Homutov <vl@nginx.com>
parents: 742
diff changeset
524
2abb92a19101 Documented 'worker_aio_requests' directive.
Vladimir Homutov <vl@nginx.com>
parents: 742
diff changeset
525 <para>
2abb92a19101 Documented 'worker_aio_requests' directive.
Vladimir Homutov <vl@nginx.com>
parents: 742
diff changeset
526 When using <link doc="http/ngx_http_core_module.xml" id="aio"/>
2abb92a19101 Documented 'worker_aio_requests' directive.
Vladimir Homutov <vl@nginx.com>
parents: 742
diff changeset
527 with the <link doc="../docs/events.xml" id="epoll"/>
2abb92a19101 Documented 'worker_aio_requests' directive.
Vladimir Homutov <vl@nginx.com>
parents: 742
diff changeset
528 connection processing method, sets the maximum <value>number</value> of
2abb92a19101 Documented 'worker_aio_requests' directive.
Vladimir Homutov <vl@nginx.com>
parents: 742
diff changeset
529 outstanding asynchronous I/O operations
2abb92a19101 Documented 'worker_aio_requests' directive.
Vladimir Homutov <vl@nginx.com>
parents: 742
diff changeset
530 for a single worker process.
2abb92a19101 Documented 'worker_aio_requests' directive.
Vladimir Homutov <vl@nginx.com>
parents: 742
diff changeset
531 </para>
2abb92a19101 Documented 'worker_aio_requests' directive.
Vladimir Homutov <vl@nginx.com>
parents: 742
diff changeset
532
2abb92a19101 Documented 'worker_aio_requests' directive.
Vladimir Homutov <vl@nginx.com>
parents: 742
diff changeset
533 </directive>
2abb92a19101 Documented 'worker_aio_requests' directive.
Vladimir Homutov <vl@nginx.com>
parents: 742
diff changeset
534
2abb92a19101 Documented 'worker_aio_requests' directive.
Vladimir Homutov <vl@nginx.com>
parents: 742
diff changeset
535
545
e97b46d1842d Documented the "worker_connections" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 523
diff changeset
536 <directive name="worker_connections">
e97b46d1842d Documented the "worker_connections" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 523
diff changeset
537 <syntax><value>number</value></syntax>
e97b46d1842d Documented the "worker_connections" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 523
diff changeset
538 <default>512</default>
e97b46d1842d Documented the "worker_connections" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 523
diff changeset
539 <context>events</context>
e97b46d1842d Documented the "worker_connections" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 523
diff changeset
540
e97b46d1842d Documented the "worker_connections" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 523
diff changeset
541 <para>
e97b46d1842d Documented the "worker_connections" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 523
diff changeset
542 Sets the maximum number of simultaneous connections that
e97b46d1842d Documented the "worker_connections" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 523
diff changeset
543 can be opened by a worker process.
e97b46d1842d Documented the "worker_connections" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 523
diff changeset
544 </para>
e97b46d1842d Documented the "worker_connections" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 523
diff changeset
545
e97b46d1842d Documented the "worker_connections" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 523
diff changeset
546 <para>
e97b46d1842d Documented the "worker_connections" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 523
diff changeset
547 It should be kept in mind that this number includes all connections
957
6d9d4bb571a9 Text review of the ngx_core_module.
Egor Nikitin <yegor.nikitin@gmail.com>
parents: 953
diff changeset
548 (e.g. connections with proxied servers, among others),
545
e97b46d1842d Documented the "worker_connections" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 523
diff changeset
549 not only connections with clients.
e97b46d1842d Documented the "worker_connections" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 523
diff changeset
550 Another consideration is that the actual number of simultaneous
966
95c3c3bbf1ce Text review.
Egor Nikitin <yegor.nikitin@gmail.com>
parents: 957
diff changeset
551 connections cannot exceed the current limit on
957
6d9d4bb571a9 Text review of the ngx_core_module.
Egor Nikitin <yegor.nikitin@gmail.com>
parents: 953
diff changeset
552 the maximum number of open files, which can be changed by
545
e97b46d1842d Documented the "worker_connections" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 523
diff changeset
553 <link id="worker_rlimit_nofile"/>.
e97b46d1842d Documented the "worker_connections" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 523
diff changeset
554 </para>
e97b46d1842d Documented the "worker_connections" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 523
diff changeset
555
e97b46d1842d Documented the "worker_connections" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 523
diff changeset
556 </directive>
e97b46d1842d Documented the "worker_connections" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 523
diff changeset
557
e97b46d1842d Documented the "worker_connections" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 523
diff changeset
558
469
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
559 <directive name="worker_cpu_affinity">
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
560 <syntax><value>cpumask</value> ...</syntax>
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
561 <default/>
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
562 <context>main</context>
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
563
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
564 <para>
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
565 Binds worker processes to the sets of CPUs.
957
6d9d4bb571a9 Text review of the ngx_core_module.
Egor Nikitin <yegor.nikitin@gmail.com>
parents: 953
diff changeset
566 Each CPU set is represented by a bitmask of allowed CPUs.
469
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
567 There should be a separate set defined for each of the worker processes.
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
568 By default, worker processes are not bound to any specific CPUs.
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
569 </para>
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
570
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
571 <para>
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
572 For example,
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
573 <example>
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
574 worker_processes 4;
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
575 worker_cpu_affinity 0001 0010 0100 1000;
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
576 </example>
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
577 binds each worker process to a separate CPU, while
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
578 <example>
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
579 worker_processes 2;
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
580 worker_cpu_affinity 0101 1010;
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
581 </example>
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
582 binds the first worker process to CPU0/CPU2,
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
583 and the second worker process to CPU1/CPU3.
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
584 The second example is suitable for hyper-threading.
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
585 </para>
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
586
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
587 <para>
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
588 <note>
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
589 The directive is only available on FreeBSD and Linux.
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
590 </note>
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
591 </para>
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
592
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
593 </directive>
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
594
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
595
63
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
596 <directive name="worker_priority">
271
4c6d2c614d2c Cleaned up XML tag mess:
Ruslan Ermilov <ru@nginx.com>
parents: 270
diff changeset
597 <syntax><value>number</value></syntax>
102
c76a257f3fd4 The directive name is now automatically printed in <default> and <syntax>.
Ruslan Ermilov <ru@nginx.com>
parents: 98
diff changeset
598 <default>0</default>
63
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
599 <context>main</context>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
600
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
601 <para>
957
6d9d4bb571a9 Text review of the ngx_core_module.
Egor Nikitin <yegor.nikitin@gmail.com>
parents: 953
diff changeset
602 Defines the scheduling priority for worker processes like it is
63
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
603 done by the <command>nice</command> command: a negative
271
4c6d2c614d2c Cleaned up XML tag mess:
Ruslan Ermilov <ru@nginx.com>
parents: 270
diff changeset
604 <value>number</value>
63
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
605 means higher priority.
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
606 Allowed range normally varies from -20 to 20.
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
607 </para>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
608
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
609 <para>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
610 Example:
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
611 <example>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
612 worker_priority -10;
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
613 </example>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
614 </para>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
615
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
616 </directive>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
617
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
618
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
619 <directive name="worker_processes">
740
46d70031bea9 Documented the recently added "auto" parameter of the
Andrey Belov <defan@nginx.com>
parents: 659
diff changeset
620 <syntax><value>number</value> | <literal>auto</literal></syntax>
102
c76a257f3fd4 The directive name is now automatically printed in <default> and <syntax>.
Ruslan Ermilov <ru@nginx.com>
parents: 98
diff changeset
621 <default>1</default>
63
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
622 <context>main</context>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
623
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
624 <para>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
625 Defines the number of worker processes.
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
626 </para>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
627
226
c4b33b07dcfe Added some basic hints on how to tune "worker_processes".
Ruslan Ermilov <ru@nginx.com>
parents: 158
diff changeset
628 <para>
c4b33b07dcfe Added some basic hints on how to tune "worker_processes".
Ruslan Ermilov <ru@nginx.com>
parents: 158
diff changeset
629 The optimal value depends on many factors including (but not
c4b33b07dcfe Added some basic hints on how to tune "worker_processes".
Ruslan Ermilov <ru@nginx.com>
parents: 158
diff changeset
630 limited to) the number of CPU cores, the number of hard disk
c4b33b07dcfe Added some basic hints on how to tune "worker_processes".
Ruslan Ermilov <ru@nginx.com>
parents: 158
diff changeset
631 drives that store data, and load pattern.
957
6d9d4bb571a9 Text review of the ngx_core_module.
Egor Nikitin <yegor.nikitin@gmail.com>
parents: 953
diff changeset
632 When one is in doubt, setting it to the number of available CPU cores
740
46d70031bea9 Documented the recently added "auto" parameter of the
Andrey Belov <defan@nginx.com>
parents: 659
diff changeset
633 would be a good start (the value “<literal>auto</literal>”
46d70031bea9 Documented the recently added "auto" parameter of the
Andrey Belov <defan@nginx.com>
parents: 659
diff changeset
634 will try to autodetect it).
742
3a2e35f4c279 Documented that "worker_processes auto" appeared in version 1.3.8.
Ruslan Ermilov <ru@nginx.com>
parents: 740
diff changeset
635 <note>
3a2e35f4c279 Documented that "worker_processes auto" appeared in version 1.3.8.
Ruslan Ermilov <ru@nginx.com>
parents: 740
diff changeset
636 The <literal>auto</literal> parameter is supported starting from
764
f8434fdd3cd9 The "auto" parameter of the ""worker_processes" directive
Ruslan Ermilov <ru@nginx.com>
parents: 750
diff changeset
637 versions 1.3.8 and 1.2.5.
742
3a2e35f4c279 Documented that "worker_processes auto" appeared in version 1.3.8.
Ruslan Ermilov <ru@nginx.com>
parents: 740
diff changeset
638 </note>
226
c4b33b07dcfe Added some basic hints on how to tune "worker_processes".
Ruslan Ermilov <ru@nginx.com>
parents: 158
diff changeset
639 </para>
c4b33b07dcfe Added some basic hints on how to tune "worker_processes".
Ruslan Ermilov <ru@nginx.com>
parents: 158
diff changeset
640
63
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
641 </directive>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
642
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
643
82
89c31b453d40 Sorted directives alphabetically.
Ruslan Ermilov <ru@nginx.com>
parents: 63
diff changeset
644 <directive name="worker_rlimit_core">
271
4c6d2c614d2c Cleaned up XML tag mess:
Ruslan Ermilov <ru@nginx.com>
parents: 270
diff changeset
645 <syntax><value>size</value></syntax>
82
89c31b453d40 Sorted directives alphabetically.
Ruslan Ermilov <ru@nginx.com>
parents: 63
diff changeset
646 <default/>
89c31b453d40 Sorted directives alphabetically.
Ruslan Ermilov <ru@nginx.com>
parents: 63
diff changeset
647 <context>main</context>
89c31b453d40 Sorted directives alphabetically.
Ruslan Ermilov <ru@nginx.com>
parents: 63
diff changeset
648
89c31b453d40 Sorted directives alphabetically.
Ruslan Ermilov <ru@nginx.com>
parents: 63
diff changeset
649 <para>
89c31b453d40 Sorted directives alphabetically.
Ruslan Ermilov <ru@nginx.com>
parents: 63
diff changeset
650 Changes the limit on the largest size of a core file
89c31b453d40 Sorted directives alphabetically.
Ruslan Ermilov <ru@nginx.com>
parents: 63
diff changeset
651 (<c-def>RLIMIT_CORE</c-def>) for worker processes.
89c31b453d40 Sorted directives alphabetically.
Ruslan Ermilov <ru@nginx.com>
parents: 63
diff changeset
652 Used to increase the limit without restarting the main process.
89c31b453d40 Sorted directives alphabetically.
Ruslan Ermilov <ru@nginx.com>
parents: 63
diff changeset
653 </para>
89c31b453d40 Sorted directives alphabetically.
Ruslan Ermilov <ru@nginx.com>
parents: 63
diff changeset
654
89c31b453d40 Sorted directives alphabetically.
Ruslan Ermilov <ru@nginx.com>
parents: 63
diff changeset
655 </directive>
89c31b453d40 Sorted directives alphabetically.
Ruslan Ermilov <ru@nginx.com>
parents: 63
diff changeset
656
89c31b453d40 Sorted directives alphabetically.
Ruslan Ermilov <ru@nginx.com>
parents: 63
diff changeset
657
89c31b453d40 Sorted directives alphabetically.
Ruslan Ermilov <ru@nginx.com>
parents: 63
diff changeset
658 <directive name="worker_rlimit_nofile">
271
4c6d2c614d2c Cleaned up XML tag mess:
Ruslan Ermilov <ru@nginx.com>
parents: 270
diff changeset
659 <syntax><value>number</value></syntax>
82
89c31b453d40 Sorted directives alphabetically.
Ruslan Ermilov <ru@nginx.com>
parents: 63
diff changeset
660 <default/>
89c31b453d40 Sorted directives alphabetically.
Ruslan Ermilov <ru@nginx.com>
parents: 63
diff changeset
661 <context>main</context>
89c31b453d40 Sorted directives alphabetically.
Ruslan Ermilov <ru@nginx.com>
parents: 63
diff changeset
662
89c31b453d40 Sorted directives alphabetically.
Ruslan Ermilov <ru@nginx.com>
parents: 63
diff changeset
663 <para>
89c31b453d40 Sorted directives alphabetically.
Ruslan Ermilov <ru@nginx.com>
parents: 63
diff changeset
664 Changes the limit on the maximum number of open files
89c31b453d40 Sorted directives alphabetically.
Ruslan Ermilov <ru@nginx.com>
parents: 63
diff changeset
665 (<c-def>RLIMIT_NOFILE</c-def>) for worker processes.
89c31b453d40 Sorted directives alphabetically.
Ruslan Ermilov <ru@nginx.com>
parents: 63
diff changeset
666 Used to increase the limit without restarting the main process.
89c31b453d40 Sorted directives alphabetically.
Ruslan Ermilov <ru@nginx.com>
parents: 63
diff changeset
667 </para>
89c31b453d40 Sorted directives alphabetically.
Ruslan Ermilov <ru@nginx.com>
parents: 63
diff changeset
668
89c31b453d40 Sorted directives alphabetically.
Ruslan Ermilov <ru@nginx.com>
parents: 63
diff changeset
669 </directive>
89c31b453d40 Sorted directives alphabetically.
Ruslan Ermilov <ru@nginx.com>
parents: 63
diff changeset
670
89c31b453d40 Sorted directives alphabetically.
Ruslan Ermilov <ru@nginx.com>
parents: 63
diff changeset
671
554
ccb7451af1d8 Documented the "worker_rlimit_sigpending" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 545
diff changeset
672 <directive name="worker_rlimit_sigpending">
ccb7451af1d8 Documented the "worker_rlimit_sigpending" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 545
diff changeset
673 <syntax><value>number</value></syntax>
ccb7451af1d8 Documented the "worker_rlimit_sigpending" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 545
diff changeset
674 <default/>
ccb7451af1d8 Documented the "worker_rlimit_sigpending" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 545
diff changeset
675 <context>main</context>
ccb7451af1d8 Documented the "worker_rlimit_sigpending" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 545
diff changeset
676
ccb7451af1d8 Documented the "worker_rlimit_sigpending" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 545
diff changeset
677 <para>
ccb7451af1d8 Documented the "worker_rlimit_sigpending" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 545
diff changeset
678 On systems that support <link doc="events.xml" id="rtsig"/>
ccb7451af1d8 Documented the "worker_rlimit_sigpending" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 545
diff changeset
679 connection processing method,
ccb7451af1d8 Documented the "worker_rlimit_sigpending" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 545
diff changeset
680 changes the limit on the number of signals that may be queued
ccb7451af1d8 Documented the "worker_rlimit_sigpending" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 545
diff changeset
681 (<c-def>RLIMIT_SIGPENDING</c-def>) for worker processes.
ccb7451af1d8 Documented the "worker_rlimit_sigpending" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 545
diff changeset
682 Used to increase the limit without restarting the main process.
ccb7451af1d8 Documented the "worker_rlimit_sigpending" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 545
diff changeset
683 </para>
ccb7451af1d8 Documented the "worker_rlimit_sigpending" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 545
diff changeset
684
ccb7451af1d8 Documented the "worker_rlimit_sigpending" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 545
diff changeset
685 </directive>
ccb7451af1d8 Documented the "worker_rlimit_sigpending" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 545
diff changeset
686
ccb7451af1d8 Documented the "worker_rlimit_sigpending" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 545
diff changeset
687
63
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
688 <directive name="working_directory">
271
4c6d2c614d2c Cleaned up XML tag mess:
Ruslan Ermilov <ru@nginx.com>
parents: 270
diff changeset
689 <syntax><value>directory</value></syntax>
63
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
690 <default/>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
691 <context>main</context>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
692
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
693 <para>
957
6d9d4bb571a9 Text review of the ngx_core_module.
Egor Nikitin <yegor.nikitin@gmail.com>
parents: 953
diff changeset
694 Defines the current working directory for a worker process.
63
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
695 It is primarily used when writing a core-file, in which case
262
676abe405aba Changed one instance of "working process" to "worker process".
Ruslan Ermilov <ru@nginx.com>
parents: 249
diff changeset
696 a worker process should have write permission for the
63
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
697 specified directory.
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
698 </para>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
699
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
700 </directive>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
701
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
702 </section>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
703
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
704 </module>