Mercurial > hg > nginx-site
annotate xml/en/docs/ngx_core_module.xml @ 975:a57c36c82461
Donor added.
author | Maxim Konovalov <maxim@nginx.com> |
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date | Fri, 23 Aug 2013 08:01:04 +0000 |
parents | 95c3c3bbf1ce |
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1 <?xml version="1.0"?> |
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2 |
580
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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 |
63
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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" |
589 | 12 lang="en" |
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13 rev="9"> |
63
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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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63 |
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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"> |
271 | 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 | 99 Debugged connections are specified by IPv4 or IPv6 (1.3.0, 1.2.1) |
100 address or network. | |
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101 A connection may also be specified using a hostname. |
523 | 102 For connections using UNIX-domain sockets (1.3.0, 1.2.1), |
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 | 125 <directive name="debug_points"> |
126 <syntax><literal>abort</literal> | <literal>stop</literal></syntax> | |
127 <default/> | |
128 <context>main</context> | |
129 | |
130 <para> | |
131 This directive is used for debugging. | |
132 </para> | |
133 | |
134 <para> | |
135 When internal error is detected, e.g. the leak of sockets on | |
136 restart of working processes, enabling <literal>debug_points</literal> | |
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 |
574 | 139 analysis using a system debugger. |
140 </para> | |
141 | |
142 </directive> | |
143 | |
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>] |
271 | 149 [<literal>debug</literal> | |
150 <literal>info</literal> | | |
151 <literal>notice</literal> | | |
152 <literal>warn</literal> | | |
153 <literal>error</literal> | | |
154 <literal>crit</literal> | | |
155 <literal>alert</literal> | | |
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> |
271 | 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 syslog 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> |
271 | 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 | 183 For example, the default level <literal>error</literal> will |
184 cause <literal>error</literal>, <literal>crit</literal>, | |
185 <literal>alert</literal>, and <literal>emerg</literal> messages | |
158
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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> |
271 | 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 <para> |
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196 The following parameters configure logging to syslog: |
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197 <list type="tag"> |
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198 |
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199 <tag-name><literal>server=</literal><value>address</value></tag-name> |
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200 <tag-desc> |
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201 Defines an address of a syslog server. |
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202 An address can be specified as a domain name or IP address, |
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203 and an optional port, or as a UNIX-domain socket path |
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204 specified after the “<literal>unix:</literal>” prefix. |
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205 If port is not specified, the port 514 is used. |
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206 If a domain name resolves to several IP addresses, the first resolved |
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207 address is used. |
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208 </tag-desc> |
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209 |
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210 <tag-name><literal>facility=</literal><value>string</value></tag-name> |
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211 <tag-desc> |
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212 Sets facility of syslog messages, as defined in |
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213 <link url="http://tools.ietf.org/html/rfc3164#section-4.1.1">RFC 3164</link>. |
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214 Facility can be one of “<literal>kern</literal>”, “<literal>user</literal>”, |
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215 “<literal>mail</literal>”, “<literal>daemon</literal>”, |
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216 “<literal>auth</literal>”, “<literal>intern</literal>”, |
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217 “<literal>lpr</literal>”, “<literal>news</literal>”, “<literal>uucp</literal>”, |
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218 “<literal>clock</literal>”, “<literal>authpriv</literal>”, |
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219 “<literal>ftp</literal>”, “<literal>ntp</literal>”, “<literal>audit</literal>”, |
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220 “<literal>alert</literal>”, “<literal>cron</literal>”, |
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221 “<literal>local0</literal>”..“<literal>local7</literal>”. |
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222 Default is “<literal>local7</literal>”. |
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223 </tag-desc> |
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224 |
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225 <tag-name><literal>tag=</literal><value>string</value></tag-name> |
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226 <tag-desc> |
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227 Sets tag of syslog messages. |
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228 Default is “<literal>nginx</literal>”. |
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229 </tag-desc> |
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230 |
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231 <!-- |
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232 <tag-name><literal>bare=</literal><literal>on</literal> | |
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233 <literal>off</literal></tag-name> |
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234 <tag-desc> |
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235 If enabled, messages are sent without syslog headers. |
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236 Default is <literal>off</literal>. |
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237 </tag-desc> |
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238 --> |
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239 |
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240 </list> |
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241 Example syslog configuration: |
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242 <example> |
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243 error_log syslog:server=192.168.1.1 debug; |
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244 error_log syslog:server=unix:/var/log/nginx.sock; |
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245 error_log syslog:server=[2001:db8::1]:12345,facility=local7,tag=nginx error; |
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246 </example> |
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247 </para> |
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248 |
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249 <para> |
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250 <note> |
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251 Logging to syslog is available as part of our <commercial_version/> only. |
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252 </note> |
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253 </para> |
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254 |
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255 </directive> |
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256 |
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257 |
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258 <directive name="env"> |
271 | 259 <syntax><value>variable</value>[=<value>value</value>]</syntax> |
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260 <default>TZ</default> |
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261 <context>main</context> |
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262 |
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263 <para> |
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264 By default, nginx removes all environment variables inherited |
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265 from its parent process except the TZ variable. |
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266 This directive allows preserving some of the inherited variables, |
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267 changing their values, or creating new environment variables. |
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268 These variables are then: |
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269 <list type="bullet"> |
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270 |
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271 <listitem> |
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272 inherited during a <link doc="control.xml" id="upgrade">live upgrade</link> |
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273 of an executable file; |
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274 </listitem> |
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275 |
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276 <listitem> |
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277 used by the |
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278 <link doc="http/ngx_http_perl_module.xml">ngx_http_perl_module</link> module; |
63
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279 </listitem> |
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280 |
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281 <listitem> |
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282 used by worker processes. |
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283 One should bear in mind that controlling system libraries in this way |
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284 is not always possible as it is common for libraries to check |
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285 variables only during initialization, well before they can be set |
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286 using this directive. |
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287 An exception from this is an above mentioned |
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288 <link doc="control.xml" id="upgrade">live upgrade</link> |
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289 of an executable file. |
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290 </listitem> |
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291 |
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292 </list> |
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293 </para> |
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294 |
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295 <para> |
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296 The TZ variable is always inherited and available to the |
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297 <link doc="http/ngx_http_perl_module.xml">ngx_http_perl_module</link> |
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298 module, unless it is configured explicitly. |
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299 </para> |
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300 |
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301 <para> |
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302 Usage example: |
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303 <example> |
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304 env MALLOC_OPTIONS; |
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305 env PERL5LIB=/data/site/modules; |
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306 env OPENSSL_ALLOW_PROXY_CERTS=1; |
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307 </example> |
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308 </para> |
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309 |
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310 <para> |
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311 <note> |
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312 The NGINX environment variable is used internally by nginx |
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313 and should not be set directly by the user. |
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314 </note> |
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315 </para> |
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316 |
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317 </directive> |
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318 |
249 | 319 |
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320 <directive name="events"> |
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321 <syntax block="yes"/> |
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322 <default/> |
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323 <context>main</context> |
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324 |
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325 <para> |
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326 Provides the configuration file context in which the directives that |
556
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327 affect connection processing are specified. |
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328 </para> |
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329 |
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330 </directive> |
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331 |
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332 |
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333 <directive name="include"> |
271 | 334 <syntax><value>file</value> | <value>mask</value></syntax> |
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335 <default/> |
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336 <context/> |
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337 |
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338 <para> |
271 | 339 Includes another <value>file</value>, or files matching the |
340 specified <value>mask</value>, into configuration. | |
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341 Included files should consist of |
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342 syntactically correct directives and blocks. |
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343 </para> |
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344 |
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345 <para> |
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346 Usage example: |
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347 <example> |
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348 include mime.types; |
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349 include vhosts/*.conf; |
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350 </example> |
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351 </para> |
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352 |
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353 </directive> |
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354 |
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355 |
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356 <directive name="lock_file"> |
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357 <syntax><value>file</value></syntax> |
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358 <default>logs/nginx.lock</default> |
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359 <context>main</context> |
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360 |
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361 <para> |
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362 nginx uses the locking mechanism to implement <link id="accept_mutex"/> |
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363 and serialize access to shared memory. |
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364 On most systems the locks are implemented using atomic operations, |
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365 and this directive is ignored. |
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366 On other systems the “lock file” mechanism is used. |
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367 This directive specifies a prefix for the names of lock files. |
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368 </para> |
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369 |
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370 </directive> |
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371 |
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372 |
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373 <directive name="master_process"> |
271 | 374 <syntax><literal>on</literal> | <literal>off</literal></syntax> |
102
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375 <default>on</default> |
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376 <context>main</context> |
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377 |
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378 <para> |
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379 Determines whether worker processes are started. |
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380 This directive is intended for nginx developers. |
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381 </para> |
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382 |
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383 </directive> |
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384 |
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385 |
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386 <directive name="multi_accept"> |
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387 <syntax><literal>on</literal> | <literal>off</literal></syntax> |
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388 <default>off</default> |
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389 <context>events</context> |
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390 |
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391 <para> |
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392 If <literal>multi_accept</literal> is disabled, a worker process |
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393 will accept one new connection at a time. |
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394 Otherwise, a worker process |
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395 will accept all new connections at a time. |
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396 <note> |
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397 The directive is ignored if <link doc="events.xml" id="kqueue"/> |
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398 connection processing method is used, because it reports |
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399 the number of new connections waiting to be accepted. |
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400 </note> |
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401 <note> |
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402 The use of <link doc="events.xml" id="rtsig"/> |
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403 connection processing method |
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404 automatically enables <literal>multi_accept</literal>. |
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405 </note> |
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406 </para> |
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407 |
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408 </directive> |
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409 |
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410 |
289
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411 <directive name="pcre_jit"> |
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412 <syntax><literal>on</literal> | <literal>off</literal></syntax> |
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413 <default>off</default> |
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414 <context>main</context> |
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415 <appeared-in>1.1.12</appeared-in> |
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416 |
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417 <para> |
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418 Enables or disables the use of “just-in-time compilation” (PCRE JIT) |
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419 for the regular expressions known by the time of configuration parsing. |
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420 </para> |
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421 |
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422 <para> |
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423 PCRE JIT can speed up processing of regular expressions significantly. |
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424 <note> |
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425 The JIT is available in PCRE libraries starting from version 8.20 |
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426 built with the <literal>--enable-jit</literal> configuration parameter. |
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427 When the PCRE library is built with nginx (<literal>--with-pcre=</literal>), |
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428 the JIT support is enabled via the |
289
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429 <literal>--with-pcre-jit</literal> configuration parameter. |
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430 </note> |
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431 </para> |
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432 |
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433 </directive> |
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434 |
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435 |
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436 <directive name="pid"> |
271 | 437 <syntax><value>file</value></syntax> |
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438 <default>nginx.pid</default> |
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439 <context>main</context> |
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440 |
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441 <para> |
271 | 442 Defines a <value>file</value> that will store the process ID of the main process. |
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443 </para> |
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444 |
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445 </directive> |
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446 |
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447 |
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448 <directive name="ssl_engine"> |
271 | 449 <syntax><value>device</value></syntax> |
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450 <default/> |
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451 <context>main</context> |
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452 |
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453 <para> |
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454 Defines the name of the hardware SSL accelerator. |
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455 </para> |
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456 |
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457 </directive> |
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458 |
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459 |
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460 <directive name="timer_resolution"> |
271 | 461 <syntax><value>interval</value></syntax> |
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462 <default/> |
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463 <context>main</context> |
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464 |
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465 <para> |
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466 Reduces timer resolution in worker processes, thus reducing the |
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467 number of <c-func>gettimeofday</c-func> system calls made. |
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468 By default, <c-func>gettimeofday</c-func> is called each time |
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469 a kernel event is received. |
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470 With reduced resolution, <c-func>gettimeofday</c-func> is only |
271 | 471 called once per specified <value>interval</value>. |
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472 </para> |
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473 |
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474 <para> |
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475 Example: |
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476 <example> |
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477 timer_resolution 100ms; |
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478 </example> |
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479 </para> |
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480 |
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481 <para> |
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482 Internal implementation of the interval depends on the method used: |
63
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483 <list type="bullet"> |
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484 |
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485 <listitem> |
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486 the <c-def>EVFILT_TIMER</c-def> filter if <literal>kqueue</literal> is used; |
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487 </listitem> |
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488 |
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489 <listitem> |
271 | 490 <c-func>timer_create</c-func> if <literal>eventport</literal> is used; |
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491 </listitem> |
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492 |
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493 <listitem> |
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494 <c-func>setitimer</c-func> otherwise. |
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495 </listitem> |
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496 |
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497 </list> |
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498 </para> |
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499 |
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500 </directive> |
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501 |
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502 |
556
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503 <directive name="use"> |
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504 <syntax><value>method</value></syntax> |
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505 <default/> |
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506 <context>events</context> |
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507 |
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508 <para> |
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509 Specifies the <link doc="events.xml">connection processing</link> |
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510 <value>method</value> to use. |
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511 There is normally no need to specify it explicitly, because nginx will |
556
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512 by default use the most efficient method. |
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513 </para> |
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514 |
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515 </directive> |
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516 |
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517 |
82
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518 <directive name="user"> |
271 | 519 <syntax><value>user</value> [<value>group</value>]</syntax> |
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520 <default>nobody nobody</default> |
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521 <context>main</context> |
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522 |
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523 <para> |
271 | 524 Defines <value>user</value> and <value>group</value> |
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525 credentials used by worker processes. |
271 | 526 If <value>group</value> is omitted, a group whose name equals |
527 that of <value>user</value> is used. | |
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528 </para> |
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529 |
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530 </directive> |
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531 |
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|
532 |
749
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|
533 <directive name="worker_aio_requests"> |
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534 <syntax><value>number</value></syntax> |
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|
535 <default>32</default> |
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|
536 <context>events</context> |
750
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|
537 <appeared-in>1.1.4</appeared-in> |
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|
538 <appeared-in>1.0.7</appeared-in> |
749
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|
539 |
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|
540 <para> |
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|
541 When using <link doc="http/ngx_http_core_module.xml" id="aio"/> |
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542 with the <link doc="../docs/events.xml" id="epoll"/> |
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|
543 connection processing method, sets the maximum <value>number</value> of |
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diff
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|
544 outstanding asynchronous I/O operations |
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|
545 for a single worker process. |
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|
546 </para> |
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diff
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|
547 |
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|
548 </directive> |
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|
549 |
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|
550 |
545
e97b46d1842d
Documented the "worker_connections" directive.
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diff
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|
551 <directive name="worker_connections"> |
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552 <syntax><value>number</value></syntax> |
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Documented the "worker_connections" directive.
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553 <default>512</default> |
e97b46d1842d
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554 <context>events</context> |
e97b46d1842d
Documented the "worker_connections" directive.
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|
555 |
e97b46d1842d
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|
556 <para> |
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|
557 Sets the maximum number of simultaneous connections that |
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558 can be opened by a worker process. |
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559 </para> |
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|
560 |
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|
561 <para> |
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|
562 It should be kept in mind that this number includes all connections |
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Text review of the ngx_core_module.
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|
563 (e.g. connections with proxied servers, among others), |
545
e97b46d1842d
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diff
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|
564 not only connections with clients. |
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|
565 Another consideration is that the actual number of simultaneous |
966 | 566 connections cannot exceed the current limit on |
957
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|
567 the maximum number of open files, which can be changed by |
545
e97b46d1842d
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diff
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|
568 <link id="worker_rlimit_nofile"/>. |
e97b46d1842d
Documented the "worker_connections" directive.
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diff
changeset
|
569 </para> |
e97b46d1842d
Documented the "worker_connections" directive.
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diff
changeset
|
570 |
e97b46d1842d
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parents:
523
diff
changeset
|
571 </directive> |
e97b46d1842d
Documented the "worker_connections" directive.
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diff
changeset
|
572 |
e97b46d1842d
Documented the "worker_connections" directive.
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diff
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|
573 |
469
8275e169f77b
Documented the "worker_cpu_affinity" directive.
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diff
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|
574 <directive name="worker_cpu_affinity"> |
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575 <syntax><value>cpumask</value> ...</syntax> |
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diff
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|
576 <default/> |
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|
577 <context>main</context> |
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578 |
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diff
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|
579 <para> |
8275e169f77b
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parents:
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diff
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580 Binds worker processes to the sets of CPUs. |
957
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|
581 Each CPU set is represented by a bitmask of allowed CPUs. |
469
8275e169f77b
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diff
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|
582 There should be a separate set defined for each of the worker processes. |
8275e169f77b
Documented the "worker_cpu_affinity" directive.
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parents:
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diff
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583 By default, worker processes are not bound to any specific CPUs. |
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584 </para> |
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diff
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|
585 |
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|
586 <para> |
8275e169f77b
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587 For example, |
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Documented the "worker_cpu_affinity" directive.
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|
588 <example> |
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parents:
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|
589 worker_processes 4; |
8275e169f77b
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diff
changeset
|
590 worker_cpu_affinity 0001 0010 0100 1000; |
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parents:
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diff
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|
591 </example> |
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|
592 binds each worker process to a separate CPU, while |
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455
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593 <example> |
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|
594 worker_processes 2; |
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|
595 worker_cpu_affinity 0101 1010; |
8275e169f77b
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|
596 </example> |
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|
597 binds the first worker process to CPU0/CPU2, |
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diff
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|
598 and the second worker process to CPU1/CPU3. |
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diff
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|
599 The second example is suitable for hyper-threading. |
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Documented the "worker_cpu_affinity" directive.
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|
600 </para> |
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Documented the "worker_cpu_affinity" directive.
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|
601 |
8275e169f77b
Documented the "worker_cpu_affinity" directive.
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|
602 <para> |
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Documented the "worker_cpu_affinity" directive.
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diff
changeset
|
603 <note> |
8275e169f77b
Documented the "worker_cpu_affinity" directive.
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|
604 The directive is only available on FreeBSD and Linux. |
8275e169f77b
Documented the "worker_cpu_affinity" directive.
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|
605 </note> |
8275e169f77b
Documented the "worker_cpu_affinity" directive.
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diff
changeset
|
606 </para> |
8275e169f77b
Documented the "worker_cpu_affinity" directive.
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parents:
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diff
changeset
|
607 |
8275e169f77b
Documented the "worker_cpu_affinity" directive.
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parents:
455
diff
changeset
|
608 </directive> |
8275e169f77b
Documented the "worker_cpu_affinity" directive.
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|
609 |
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Documented the "worker_cpu_affinity" directive.
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diff
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|
610 |
63
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diff
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|
611 <directive name="worker_priority"> |
271 | 612 <syntax><value>number</value></syntax> |
102
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The directive name is now automatically printed in <default> and <syntax>.
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diff
changeset
|
613 <default>0</default> |
63
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|
614 <context>main</context> |
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Initial English translation of ngx_core_module.
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diff
changeset
|
615 |
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Initial English translation of ngx_core_module.
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diff
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|
616 <para> |
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parents:
953
diff
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|
617 Defines the scheduling priority for worker processes like it is |
63
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618 done by the <command>nice</command> command: a negative |
271 | 619 <value>number</value> |
63
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|
620 means higher priority. |
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Initial English translation of ngx_core_module.
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changeset
|
621 Allowed range normally varies from -20 to 20. |
6108fd3217e7
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|
622 </para> |
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parents:
diff
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|
623 |
6108fd3217e7
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diff
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|
624 <para> |
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Initial English translation of ngx_core_module.
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parents:
diff
changeset
|
625 Example: |
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parents:
diff
changeset
|
626 <example> |
6108fd3217e7
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changeset
|
627 worker_priority -10; |
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changeset
|
628 </example> |
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diff
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|
629 </para> |
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Initial English translation of ngx_core_module.
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parents:
diff
changeset
|
630 |
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diff
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|
631 </directive> |
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Initial English translation of ngx_core_module.
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diff
changeset
|
632 |
6108fd3217e7
Initial English translation of ngx_core_module.
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parents:
diff
changeset
|
633 |
6108fd3217e7
Initial English translation of ngx_core_module.
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diff
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|
634 <directive name="worker_processes"> |
740
46d70031bea9
Documented the recently added "auto" parameter of the
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635 <syntax><value>number</value> | <literal>auto</literal></syntax> |
102
c76a257f3fd4
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|
636 <default>1</default> |
63
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diff
changeset
|
637 <context>main</context> |
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diff
changeset
|
638 |
6108fd3217e7
Initial English translation of ngx_core_module.
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parents:
diff
changeset
|
639 <para> |
6108fd3217e7
Initial English translation of ngx_core_module.
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parents:
diff
changeset
|
640 Defines the number of worker processes. |
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Initial English translation of ngx_core_module.
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parents:
diff
changeset
|
641 </para> |
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Initial English translation of ngx_core_module.
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changeset
|
642 |
226
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Added some basic hints on how to tune "worker_processes".
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|
643 <para> |
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644 The optimal value depends on many factors including (but not |
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Added some basic hints on how to tune "worker_processes".
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|
645 limited to) the number of CPU cores, the number of hard disk |
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diff
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|
646 drives that store data, and load pattern. |
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parents:
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diff
changeset
|
647 When one is in doubt, setting it to the number of available CPU cores |
740
46d70031bea9
Documented the recently added "auto" parameter of the
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parents:
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diff
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|
648 would be a good start (the value “<literal>auto</literal>” |
46d70031bea9
Documented the recently added "auto" parameter of the
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parents:
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diff
changeset
|
649 will try to autodetect it). |
742
3a2e35f4c279
Documented that "worker_processes auto" appeared in version 1.3.8.
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parents:
740
diff
changeset
|
650 <note> |
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diff
changeset
|
651 The <literal>auto</literal> parameter is supported starting from |
764
f8434fdd3cd9
The "auto" parameter of the ""worker_processes" directive
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changeset
|
652 versions 1.3.8 and 1.2.5. |
742
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diff
changeset
|
653 </note> |
226
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654 </para> |
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655 |
63
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656 </directive> |
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657 |
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658 |
82
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659 <directive name="worker_rlimit_core"> |
271 | 660 <syntax><value>size</value></syntax> |
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661 <default/> |
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662 <context>main</context> |
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663 |
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664 <para> |
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665 Changes the limit on the largest size of a core file |
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666 (<c-def>RLIMIT_CORE</c-def>) for worker processes. |
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667 Used to increase the limit without restarting the main process. |
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668 </para> |
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669 |
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670 </directive> |
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671 |
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672 |
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673 <directive name="worker_rlimit_nofile"> |
271 | 674 <syntax><value>number</value></syntax> |
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675 <default/> |
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676 <context>main</context> |
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677 |
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678 <para> |
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679 Changes the limit on the maximum number of open files |
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680 (<c-def>RLIMIT_NOFILE</c-def>) for worker processes. |
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681 Used to increase the limit without restarting the main process. |
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682 </para> |
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683 |
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684 </directive> |
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685 |
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686 |
554
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687 <directive name="worker_rlimit_sigpending"> |
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688 <syntax><value>number</value></syntax> |
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689 <default/> |
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690 <context>main</context> |
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691 |
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692 <para> |
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693 On systems that support <link doc="events.xml" id="rtsig"/> |
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694 connection processing method, |
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695 changes the limit on the number of signals that may be queued |
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696 (<c-def>RLIMIT_SIGPENDING</c-def>) for worker processes. |
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697 Used to increase the limit without restarting the main process. |
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698 </para> |
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699 |
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700 </directive> |
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701 |
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702 |
63
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703 <directive name="working_directory"> |
271 | 704 <syntax><value>directory</value></syntax> |
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705 <default/> |
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706 <context>main</context> |
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707 |
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708 <para> |
957
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709 Defines the current working directory for a worker process. |
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710 It is primarily used when writing a core-file, in which case |
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711 a worker process should have write permission for the |
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712 specified directory. |
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713 </para> |
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714 |
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715 </directive> |
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716 |
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717 </section> |
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718 |
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719 </module> |