annotate xml/en/docs/ngx_core_module.xml @ 1436:2333e08e277d

Documented thread pools.
author Ruslan Ermilov <ru@nginx.com>
date Wed, 18 Mar 2015 19:01:42 +0300
parents 4e89518a5999
children c79501e16e26
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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="11">
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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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35
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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.
523
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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>debug</literal> |
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150 <literal>info</literal> |
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151 <literal>notice</literal> |
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152 <literal>warn</literal> |
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153 <literal>error</literal> |
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154 <literal>crit</literal> |
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155 <literal>alert</literal> |
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156 <literal>emerg</literal>]</syntax>
158
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157 <default>logs/error.log error</default>
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158 <context>main</context>
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159 <context>http</context>
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160 <context>server</context>
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161 <context>location</context>
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162
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163 <para>
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164 Configures logging.
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165 Several logs can be specified on the same level (1.5.2).
158
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166 </para>
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167
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168 <para>
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169 The first parameter defines a file that will store the log.
158
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170 <!--
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171 If filename is not absolute, it is prefixed with the prefix path.
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172 -->
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173 The special value <literal>stderr</literal> selects the standard error file.
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174 Logging to <link doc="syslog.xml">syslog</link> can be configured by specifying
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175 the “<literal>syslog:</literal>” prefix.
158
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176 </para>
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177
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178 <para>
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179 The second parameter determines the level of logging.
158
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180 Log levels above are listed in the order of increasing severity.
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181 Setting a certain log level will cause all messages of
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182 the specified and more severe log levels to be logged.
271
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183 For example, the default level <literal>error</literal> will
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184 cause <literal>error</literal>, <literal>crit</literal>,
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185 <literal>alert</literal>, and <literal>emerg</literal> messages
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186 to be logged.
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187 If this parameter is omitted then <literal>error</literal> is used.
158
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188 <note>
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189 For <literal>debug</literal> logging to work, nginx needs to
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190 be built with <literal>--with-debug</literal>,
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191 see “<link doc="debugging_log.xml"/>”.
158
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192 </note>
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193 </para>
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194
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195 </directive>
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196
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197
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198 <directive name="env">
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199 <syntax><value>variable</value>[=<value>value</value>]</syntax>
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200 <default>TZ</default>
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201 <context>main</context>
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202
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203 <para>
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204 By default, nginx removes all environment variables inherited
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205 from its parent process except the TZ variable.
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206 This directive allows preserving some of the inherited variables,
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207 changing their values, or creating new environment variables.
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208 These variables are then:
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209 <list type="bullet">
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210
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211 <listitem>
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212 inherited during a <link doc="control.xml" id="upgrade">live upgrade</link>
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213 of an executable file;
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214 </listitem>
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215
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216 <listitem>
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217 used by the
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218 <link doc="http/ngx_http_perl_module.xml">ngx_http_perl_module</link> module;
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219 </listitem>
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220
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221 <listitem>
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222 used by worker processes.
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223 One should bear in mind that controlling system libraries in this way
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224 is not always possible as it is common for libraries to check
63
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225 variables only during initialization, well before they can be set
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226 using this directive.
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227 An exception from this is an above mentioned
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228 <link doc="control.xml" id="upgrade">live upgrade</link>
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229 of an executable file.
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230 </listitem>
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231
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232 </list>
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233 </para>
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234
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235 <para>
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236 The TZ variable is always inherited and available to the
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237 <link doc="http/ngx_http_perl_module.xml">ngx_http_perl_module</link>
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238 module, unless it is configured explicitly.
63
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239 </para>
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240
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241 <para>
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242 Usage example:
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243 <example>
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244 env MALLOC_OPTIONS;
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245 env PERL5LIB=/data/site/modules;
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246 env OPENSSL_ALLOW_PROXY_CERTS=1;
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247 </example>
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248 </para>
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249
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250 <para>
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251 <note>
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252 The NGINX environment variable is used internally by nginx
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253 and should not be set directly by the user.
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254 </note>
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255 </para>
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256
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257 </directive>
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258
249
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259
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260 <directive name="events">
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261 <syntax block="yes"/>
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262 <default/>
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263 <context>main</context>
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264
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265 <para>
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266 Provides the configuration file context in which the directives that
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267 affect connection processing are specified.
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268 </para>
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269
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270 </directive>
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271
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272
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273 <directive name="include">
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274 <syntax><value>file</value> | <value>mask</value></syntax>
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275 <default/>
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276 <context/>
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277
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278 <para>
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279 Includes another <value>file</value>, or files matching the
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280 specified <value>mask</value>, into configuration.
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281 Included files should consist of
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282 syntactically correct directives and blocks.
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283 </para>
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284
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285 <para>
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286 Usage example:
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287 <example>
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288 include mime.types;
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289 include vhosts/*.conf;
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290 </example>
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291 </para>
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292
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293 </directive>
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294
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295
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296 <directive name="lock_file">
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297 <syntax><value>file</value></syntax>
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298 <default>logs/nginx.lock</default>
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299 <context>main</context>
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300
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301 <para>
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302 nginx uses the locking mechanism to implement <link id="accept_mutex"/>
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303 and serialize access to shared memory.
571
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304 On most systems the locks are implemented using atomic operations,
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305 and this directive is ignored.
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306 On other systems the “lock file” mechanism is used.
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307 This directive specifies a prefix for the names of lock files.
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308 </para>
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309
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310 </directive>
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311
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312
63
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313 <directive name="master_process">
271
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314 <syntax><literal>on</literal> | <literal>off</literal></syntax>
102
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315 <default>on</default>
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316 <context>main</context>
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317
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318 <para>
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319 Determines whether worker processes are started.
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320 This directive is intended for nginx developers.
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321 </para>
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322
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323 </directive>
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324
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325
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326 <directive name="multi_accept">
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327 <syntax><literal>on</literal> | <literal>off</literal></syntax>
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328 <default>off</default>
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329 <context>events</context>
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330
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331 <para>
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332 If <literal>multi_accept</literal> is disabled, a worker process
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333 will accept one new connection at a time.
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334 Otherwise, a worker process
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335 will accept all new connections at a time.
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336 <note>
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337 The directive is ignored if <link doc="events.xml" id="kqueue"/>
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338 connection processing method is used, because it reports
571
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339 the number of new connections waiting to be accepted.
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340 </note>
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341 <note>
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342 The use of <link doc="events.xml" id="rtsig"/>
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343 connection processing method
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344 automatically enables <literal>multi_accept</literal>.
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345 </note>
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346 </para>
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347
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348 </directive>
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349
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350
289
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351 <directive name="pcre_jit">
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352 <syntax><literal>on</literal> | <literal>off</literal></syntax>
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353 <default>off</default>
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354 <context>main</context>
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355 <appeared-in>1.1.12</appeared-in>
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356
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357 <para>
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358 Enables or disables the use of “just-in-time compilation” (PCRE JIT)
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359 for the regular expressions known by the time of configuration parsing.
289
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360 </para>
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361
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362 <para>
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363 PCRE JIT can speed up processing of regular expressions significantly.
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364 <note>
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365 The JIT is available in PCRE libraries starting from version 8.20
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366 built with the <literal>--enable-jit</literal> configuration parameter.
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367 When the PCRE library is built with nginx (<literal>--with-pcre=</literal>),
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368 the JIT support is enabled via the
289
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369 <literal>--with-pcre-jit</literal> configuration parameter.
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370 </note>
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371 </para>
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372
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373 </directive>
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374
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375
63
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376 <directive name="pid">
271
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377 <syntax><value>file</value></syntax>
102
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378 <default>nginx.pid</default>
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379 <context>main</context>
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380
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381 <para>
271
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382 Defines a <value>file</value> that will store the process ID of the main process.
63
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383 </para>
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384
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385 </directive>
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386
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387
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388 <directive name="ssl_engine">
271
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389 <syntax><value>device</value></syntax>
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390 <default/>
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391 <context>main</context>
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392
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393 <para>
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394 Defines the name of the hardware SSL accelerator.
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395 </para>
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396
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397 </directive>
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398
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399
1436
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400 <directive name="thread_pool">
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401 <syntax>
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402 <value>name</value>
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403 <literal>threads</literal>=<value>number</value>
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404 [<literal>max_queue</literal>=<value>number</value>]</syntax>
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405 <default>default threads=32 max_queue=65536</default>
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406 <context>main</context>
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407 <appeared-in>1.7.11</appeared-in>
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408
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409 <para>
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410 Defines named thread pools
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411 used for multi-threaded reading and sending of files
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412 <link doc="http/ngx_http_core_module.xml" id="aio">without blocking</link>
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413 worker processes.
2333e08e277d Documented thread pools.
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414 </para>
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415
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416 <para>
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417 The <literal>threads</literal> parameter
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418 defines the number of threads in the pool.
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419 </para>
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 In the event that all threads in the pool are busy,
2333e08e277d Documented thread pools.
Ruslan Ermilov <ru@nginx.com>
parents: 1285
diff changeset
423 a new task will wait in the queue.
2333e08e277d Documented thread pools.
Ruslan Ermilov <ru@nginx.com>
parents: 1285
diff changeset
424 The <literal>max_queue</literal> parameter limits the number
2333e08e277d Documented thread pools.
Ruslan Ermilov <ru@nginx.com>
parents: 1285
diff changeset
425 of tasks allowed to be waiting in the queue.
2333e08e277d Documented thread pools.
Ruslan Ermilov <ru@nginx.com>
parents: 1285
diff changeset
426 By default, up to 65536 tasks can wait in the queue.
2333e08e277d Documented thread pools.
Ruslan Ermilov <ru@nginx.com>
parents: 1285
diff changeset
427 When the queue overflows, the task is completed with an error.
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
2333e08e277d Documented thread pools.
Ruslan Ermilov <ru@nginx.com>
parents: 1285
diff changeset
430 </directive>
2333e08e277d Documented thread pools.
Ruslan Ermilov <ru@nginx.com>
parents: 1285
diff changeset
431
2333e08e277d Documented thread pools.
Ruslan Ermilov <ru@nginx.com>
parents: 1285
diff changeset
432
63
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
433 <directive name="timer_resolution">
271
4c6d2c614d2c Cleaned up XML tag mess:
Ruslan Ermilov <ru@nginx.com>
parents: 270
diff changeset
434 <syntax><value>interval</value></syntax>
63
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
435 <default/>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
436 <context>main</context>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
437
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
438 <para>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
439 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
440 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
441 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
442 a kernel event is received.
63
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
443 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
444 called once per specified <value>interval</value>.
63
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
445 </para>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
446
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
447 <para>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
448 Example:
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
449 <example>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
450 timer_resolution 100ms;
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
451 </example>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
452 </para>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
453
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
454 <para>
957
6d9d4bb571a9 Text review of the ngx_core_module.
Egor Nikitin <yegor.nikitin@gmail.com>
parents: 953
diff changeset
455 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
456 <list type="bullet">
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
457
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
458 <listitem>
957
6d9d4bb571a9 Text review of the ngx_core_module.
Egor Nikitin <yegor.nikitin@gmail.com>
parents: 953
diff changeset
459 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
460 </listitem>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
461
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
462 <listitem>
271
4c6d2c614d2c Cleaned up XML tag mess:
Ruslan Ermilov <ru@nginx.com>
parents: 270
diff changeset
463 <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
464 </listitem>
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 <listitem>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
467 <c-func>setitimer</c-func> otherwise.
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
468 </listitem>
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 </list>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
471 </para>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
472
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
473 </directive>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
474
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
475
556
345012910707 Documented the "events" and "use" directives.
Ruslan Ermilov <ru@nginx.com>
parents: 554
diff changeset
476 <directive name="use">
345012910707 Documented the "events" and "use" directives.
Ruslan Ermilov <ru@nginx.com>
parents: 554
diff changeset
477 <syntax><value>method</value></syntax>
345012910707 Documented the "events" and "use" directives.
Ruslan Ermilov <ru@nginx.com>
parents: 554
diff changeset
478 <default/>
345012910707 Documented the "events" and "use" directives.
Ruslan Ermilov <ru@nginx.com>
parents: 554
diff changeset
479 <context>events</context>
345012910707 Documented the "events" and "use" directives.
Ruslan Ermilov <ru@nginx.com>
parents: 554
diff changeset
480
345012910707 Documented the "events" and "use" directives.
Ruslan Ermilov <ru@nginx.com>
parents: 554
diff changeset
481 <para>
345012910707 Documented the "events" and "use" directives.
Ruslan Ermilov <ru@nginx.com>
parents: 554
diff changeset
482 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
483 <value>method</value> to use.
957
6d9d4bb571a9 Text review of the ngx_core_module.
Egor Nikitin <yegor.nikitin@gmail.com>
parents: 953
diff changeset
484 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
485 by default use the most efficient method.
345012910707 Documented the "events" and "use" directives.
Ruslan Ermilov <ru@nginx.com>
parents: 554
diff changeset
486 </para>
345012910707 Documented the "events" and "use" directives.
Ruslan Ermilov <ru@nginx.com>
parents: 554
diff changeset
487
345012910707 Documented the "events" and "use" directives.
Ruslan Ermilov <ru@nginx.com>
parents: 554
diff changeset
488 </directive>
345012910707 Documented the "events" and "use" directives.
Ruslan Ermilov <ru@nginx.com>
parents: 554
diff changeset
489
345012910707 Documented the "events" and "use" directives.
Ruslan Ermilov <ru@nginx.com>
parents: 554
diff changeset
490
82
89c31b453d40 Sorted directives alphabetically.
Ruslan Ermilov <ru@nginx.com>
parents: 63
diff changeset
491 <directive name="user">
271
4c6d2c614d2c Cleaned up XML tag mess:
Ruslan Ermilov <ru@nginx.com>
parents: 270
diff changeset
492 <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
493 <default>nobody nobody</default>
63
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
494 <context>main</context>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
495
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
496 <para>
271
4c6d2c614d2c Cleaned up XML tag mess:
Ruslan Ermilov <ru@nginx.com>
parents: 270
diff changeset
497 Defines <value>user</value> and <value>group</value>
82
89c31b453d40 Sorted directives alphabetically.
Ruslan Ermilov <ru@nginx.com>
parents: 63
diff changeset
498 credentials used by worker processes.
271
4c6d2c614d2c Cleaned up XML tag mess:
Ruslan Ermilov <ru@nginx.com>
parents: 270
diff changeset
499 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
500 that of <value>user</value> is used.
63
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
501 </para>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
502
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
503 </directive>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
504
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
505
749
2abb92a19101 Documented 'worker_aio_requests' directive.
Vladimir Homutov <vl@nginx.com>
parents: 742
diff changeset
506 <directive name="worker_aio_requests">
2abb92a19101 Documented 'worker_aio_requests' directive.
Vladimir Homutov <vl@nginx.com>
parents: 742
diff changeset
507 <syntax><value>number</value></syntax>
2abb92a19101 Documented 'worker_aio_requests' directive.
Vladimir Homutov <vl@nginx.com>
parents: 742
diff changeset
508 <default>32</default>
2abb92a19101 Documented 'worker_aio_requests' directive.
Vladimir Homutov <vl@nginx.com>
parents: 742
diff changeset
509 <context>events</context>
750
6a1b1ba62cab Documented history of "worker_aio_requests" directive.
Vladimir Homutov <vl@nginx.com>
parents: 749
diff changeset
510 <appeared-in>1.1.4</appeared-in>
6a1b1ba62cab Documented history of "worker_aio_requests" directive.
Vladimir Homutov <vl@nginx.com>
parents: 749
diff changeset
511 <appeared-in>1.0.7</appeared-in>
749
2abb92a19101 Documented 'worker_aio_requests' directive.
Vladimir Homutov <vl@nginx.com>
parents: 742
diff changeset
512
2abb92a19101 Documented 'worker_aio_requests' directive.
Vladimir Homutov <vl@nginx.com>
parents: 742
diff changeset
513 <para>
2abb92a19101 Documented 'worker_aio_requests' directive.
Vladimir Homutov <vl@nginx.com>
parents: 742
diff changeset
514 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
515 with the <link doc="../docs/events.xml" id="epoll"/>
2abb92a19101 Documented 'worker_aio_requests' directive.
Vladimir Homutov <vl@nginx.com>
parents: 742
diff changeset
516 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
517 outstanding asynchronous I/O operations
2abb92a19101 Documented 'worker_aio_requests' directive.
Vladimir Homutov <vl@nginx.com>
parents: 742
diff changeset
518 for a single worker process.
2abb92a19101 Documented 'worker_aio_requests' directive.
Vladimir Homutov <vl@nginx.com>
parents: 742
diff changeset
519 </para>
2abb92a19101 Documented 'worker_aio_requests' directive.
Vladimir Homutov <vl@nginx.com>
parents: 742
diff changeset
520
2abb92a19101 Documented 'worker_aio_requests' directive.
Vladimir Homutov <vl@nginx.com>
parents: 742
diff changeset
521 </directive>
2abb92a19101 Documented 'worker_aio_requests' directive.
Vladimir Homutov <vl@nginx.com>
parents: 742
diff changeset
522
2abb92a19101 Documented 'worker_aio_requests' directive.
Vladimir Homutov <vl@nginx.com>
parents: 742
diff changeset
523
545
e97b46d1842d Documented the "worker_connections" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 523
diff changeset
524 <directive name="worker_connections">
e97b46d1842d Documented the "worker_connections" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 523
diff changeset
525 <syntax><value>number</value></syntax>
e97b46d1842d Documented the "worker_connections" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 523
diff changeset
526 <default>512</default>
e97b46d1842d Documented the "worker_connections" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 523
diff changeset
527 <context>events</context>
e97b46d1842d Documented the "worker_connections" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 523
diff changeset
528
e97b46d1842d Documented the "worker_connections" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 523
diff changeset
529 <para>
e97b46d1842d Documented the "worker_connections" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 523
diff changeset
530 Sets the maximum number of simultaneous connections that
e97b46d1842d Documented the "worker_connections" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 523
diff changeset
531 can be opened by a worker process.
e97b46d1842d Documented the "worker_connections" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 523
diff changeset
532 </para>
e97b46d1842d Documented the "worker_connections" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 523
diff changeset
533
e97b46d1842d Documented the "worker_connections" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 523
diff changeset
534 <para>
e97b46d1842d Documented the "worker_connections" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 523
diff changeset
535 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
536 (e.g. connections with proxied servers, among others),
545
e97b46d1842d Documented the "worker_connections" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 523
diff changeset
537 not only connections with clients.
e97b46d1842d Documented the "worker_connections" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 523
diff changeset
538 Another consideration is that the actual number of simultaneous
966
95c3c3bbf1ce Text review.
Egor Nikitin <yegor.nikitin@gmail.com>
parents: 957
diff changeset
539 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
540 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
541 <link id="worker_rlimit_nofile"/>.
e97b46d1842d Documented the "worker_connections" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 523
diff changeset
542 </para>
e97b46d1842d Documented the "worker_connections" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 523
diff changeset
543
e97b46d1842d Documented the "worker_connections" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 523
diff changeset
544 </directive>
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
469
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
547 <directive name="worker_cpu_affinity">
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
548 <syntax><value>cpumask</value> ...</syntax>
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
549 <default/>
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
550 <context>main</context>
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
551
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
552 <para>
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
553 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
554 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
555 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
556 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
557 </para>
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
558
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
559 <para>
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
560 For example,
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
561 <example>
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
562 worker_processes 4;
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
563 worker_cpu_affinity 0001 0010 0100 1000;
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
564 </example>
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
565 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
566 <example>
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
567 worker_processes 2;
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
568 worker_cpu_affinity 0101 1010;
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
569 </example>
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
570 binds the first worker process to CPU0/CPU2,
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
571 and the second worker process to CPU1/CPU3.
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
572 The second example is suitable for hyper-threading.
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
573 </para>
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
574
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
575 <para>
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
576 <note>
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
577 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
578 </note>
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
579 </para>
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
580
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
581 </directive>
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
582
8275e169f77b Documented the "worker_cpu_affinity" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 455
diff changeset
583
63
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
584 <directive name="worker_priority">
271
4c6d2c614d2c Cleaned up XML tag mess:
Ruslan Ermilov <ru@nginx.com>
parents: 270
diff changeset
585 <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
586 <default>0</default>
63
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
587 <context>main</context>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
588
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
589 <para>
957
6d9d4bb571a9 Text review of the ngx_core_module.
Egor Nikitin <yegor.nikitin@gmail.com>
parents: 953
diff changeset
590 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
591 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
592 <value>number</value>
63
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
593 means higher priority.
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
594 Allowed range normally varies from -20 to 20.
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
595 </para>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
596
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
597 <para>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
598 Example:
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
599 <example>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
600 worker_priority -10;
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
601 </example>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
602 </para>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
603
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
604 </directive>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
605
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
606
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
607 <directive name="worker_processes">
740
46d70031bea9 Documented the recently added "auto" parameter of the
Andrey Belov <defan@nginx.com>
parents: 659
diff changeset
608 <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
609 <default>1</default>
63
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
610 <context>main</context>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
611
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
612 <para>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
613 Defines the number of worker processes.
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
226
c4b33b07dcfe Added some basic hints on how to tune "worker_processes".
Ruslan Ermilov <ru@nginx.com>
parents: 158
diff changeset
616 <para>
c4b33b07dcfe Added some basic hints on how to tune "worker_processes".
Ruslan Ermilov <ru@nginx.com>
parents: 158
diff changeset
617 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
618 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
619 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
620 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
621 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
622 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
623 <note>
3a2e35f4c279 Documented that "worker_processes auto" appeared in version 1.3.8.
Ruslan Ermilov <ru@nginx.com>
parents: 740
diff changeset
624 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
625 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
626 </note>
226
c4b33b07dcfe Added some basic hints on how to tune "worker_processes".
Ruslan Ermilov <ru@nginx.com>
parents: 158
diff changeset
627 </para>
c4b33b07dcfe Added some basic hints on how to tune "worker_processes".
Ruslan Ermilov <ru@nginx.com>
parents: 158
diff changeset
628
63
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
629 </directive>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
630
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
631
82
89c31b453d40 Sorted directives alphabetically.
Ruslan Ermilov <ru@nginx.com>
parents: 63
diff changeset
632 <directive name="worker_rlimit_core">
271
4c6d2c614d2c Cleaned up XML tag mess:
Ruslan Ermilov <ru@nginx.com>
parents: 270
diff changeset
633 <syntax><value>size</value></syntax>
82
89c31b453d40 Sorted directives alphabetically.
Ruslan Ermilov <ru@nginx.com>
parents: 63
diff changeset
634 <default/>
89c31b453d40 Sorted directives alphabetically.
Ruslan Ermilov <ru@nginx.com>
parents: 63
diff changeset
635 <context>main</context>
89c31b453d40 Sorted directives alphabetically.
Ruslan Ermilov <ru@nginx.com>
parents: 63
diff changeset
636
89c31b453d40 Sorted directives alphabetically.
Ruslan Ermilov <ru@nginx.com>
parents: 63
diff changeset
637 <para>
89c31b453d40 Sorted directives alphabetically.
Ruslan Ermilov <ru@nginx.com>
parents: 63
diff changeset
638 Changes the limit on the largest size of a core file
89c31b453d40 Sorted directives alphabetically.
Ruslan Ermilov <ru@nginx.com>
parents: 63
diff changeset
639 (<c-def>RLIMIT_CORE</c-def>) for worker processes.
89c31b453d40 Sorted directives alphabetically.
Ruslan Ermilov <ru@nginx.com>
parents: 63
diff changeset
640 Used to increase the limit without restarting the main process.
89c31b453d40 Sorted directives alphabetically.
Ruslan Ermilov <ru@nginx.com>
parents: 63
diff changeset
641 </para>
89c31b453d40 Sorted directives alphabetically.
Ruslan Ermilov <ru@nginx.com>
parents: 63
diff changeset
642
89c31b453d40 Sorted directives alphabetically.
Ruslan Ermilov <ru@nginx.com>
parents: 63
diff changeset
643 </directive>
89c31b453d40 Sorted directives alphabetically.
Ruslan Ermilov <ru@nginx.com>
parents: 63
diff changeset
644
89c31b453d40 Sorted directives alphabetically.
Ruslan Ermilov <ru@nginx.com>
parents: 63
diff changeset
645
89c31b453d40 Sorted directives alphabetically.
Ruslan Ermilov <ru@nginx.com>
parents: 63
diff changeset
646 <directive name="worker_rlimit_nofile">
271
4c6d2c614d2c Cleaned up XML tag mess:
Ruslan Ermilov <ru@nginx.com>
parents: 270
diff changeset
647 <syntax><value>number</value></syntax>
82
89c31b453d40 Sorted directives alphabetically.
Ruslan Ermilov <ru@nginx.com>
parents: 63
diff changeset
648 <default/>
89c31b453d40 Sorted directives alphabetically.
Ruslan Ermilov <ru@nginx.com>
parents: 63
diff changeset
649 <context>main</context>
89c31b453d40 Sorted directives alphabetically.
Ruslan Ermilov <ru@nginx.com>
parents: 63
diff changeset
650
89c31b453d40 Sorted directives alphabetically.
Ruslan Ermilov <ru@nginx.com>
parents: 63
diff changeset
651 <para>
89c31b453d40 Sorted directives alphabetically.
Ruslan Ermilov <ru@nginx.com>
parents: 63
diff changeset
652 Changes the limit on the maximum number of open files
89c31b453d40 Sorted directives alphabetically.
Ruslan Ermilov <ru@nginx.com>
parents: 63
diff changeset
653 (<c-def>RLIMIT_NOFILE</c-def>) for worker processes.
89c31b453d40 Sorted directives alphabetically.
Ruslan Ermilov <ru@nginx.com>
parents: 63
diff changeset
654 Used to increase the limit without restarting the main process.
89c31b453d40 Sorted directives alphabetically.
Ruslan Ermilov <ru@nginx.com>
parents: 63
diff changeset
655 </para>
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 </directive>
89c31b453d40 Sorted directives alphabetically.
Ruslan Ermilov <ru@nginx.com>
parents: 63
diff changeset
658
89c31b453d40 Sorted directives alphabetically.
Ruslan Ermilov <ru@nginx.com>
parents: 63
diff changeset
659
554
ccb7451af1d8 Documented the "worker_rlimit_sigpending" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 545
diff changeset
660 <directive name="worker_rlimit_sigpending">
ccb7451af1d8 Documented the "worker_rlimit_sigpending" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 545
diff changeset
661 <syntax><value>number</value></syntax>
ccb7451af1d8 Documented the "worker_rlimit_sigpending" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 545
diff changeset
662 <default/>
ccb7451af1d8 Documented the "worker_rlimit_sigpending" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 545
diff changeset
663 <context>main</context>
ccb7451af1d8 Documented the "worker_rlimit_sigpending" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 545
diff changeset
664
ccb7451af1d8 Documented the "worker_rlimit_sigpending" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 545
diff changeset
665 <para>
ccb7451af1d8 Documented the "worker_rlimit_sigpending" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 545
diff changeset
666 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
667 connection processing method,
ccb7451af1d8 Documented the "worker_rlimit_sigpending" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 545
diff changeset
668 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
669 (<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
670 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
671 </para>
ccb7451af1d8 Documented the "worker_rlimit_sigpending" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 545
diff changeset
672
ccb7451af1d8 Documented the "worker_rlimit_sigpending" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 545
diff changeset
673 </directive>
ccb7451af1d8 Documented the "worker_rlimit_sigpending" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 545
diff changeset
674
ccb7451af1d8 Documented the "worker_rlimit_sigpending" directive.
Ruslan Ermilov <ru@nginx.com>
parents: 545
diff changeset
675
63
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
676 <directive name="working_directory">
271
4c6d2c614d2c Cleaned up XML tag mess:
Ruslan Ermilov <ru@nginx.com>
parents: 270
diff changeset
677 <syntax><value>directory</value></syntax>
63
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
678 <default/>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
679 <context>main</context>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
680
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
681 <para>
957
6d9d4bb571a9 Text review of the ngx_core_module.
Egor Nikitin <yegor.nikitin@gmail.com>
parents: 953
diff changeset
682 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
683 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
684 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
685 specified directory.
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
686 </para>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
687
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
688 </directive>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
689
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
690 </section>
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
691
6108fd3217e7 Initial English translation of ngx_core_module.
Ruslan Ermilov <ru@nginx.com>
parents:
diff changeset
692 </module>