Mercurial > hg > nginx-site
view xml/en/docs/events.xml @ 1009:135920b5c61d
Marked strings with entities in japanese translation as literal.
This allows to preserve information and produce correct output if the XML
parser expands entities on input. The markup is similar to english and
russian versions of the document.
author | Vladimir Homutov <vl@nginx.com> |
---|---|
date | Mon, 11 Nov 2013 11:54:16 +0400 |
parents | 629630df119a |
children | eea7541e7c6a |
line wrap: on
line source
<!-- Copyright (C) Igor Sysoev Copyright (C) Nginx, Inc. --> <!DOCTYPE article SYSTEM "../../../dtd/article.dtd"> <article name="Connection processing methods" link="/en/docs/events.html" lang="en" rev="2"> <section> <para> nginx supports a variety of connection processing methods. The availability of a particular method depends on the platform used. On platforms that support several methods nginx will normally select the most efficient method automatically. However, if needed, a connection processing method can be selected explicitly with the <link doc="ngx_core_module.xml" id="use"/> directive. </para> <para> The following connection processing methods are supported: <list type="bullet"> <listitem id="select"> <para> <literal>select</literal>—standard method. The supporting module is built automatically on platforms that lack more efficient methods. The <literal>--with-select_module</literal> and <literal>--without-select_module</literal> configuration parameters can be used to forcibly enable or disable the build of this module. </para> </listitem> <listitem id="poll"> <para> <literal>poll</literal>—standard method. The supporting module is built automatically on platforms that lack more efficient methods. The <literal>--with-poll_module</literal> and <literal>--without-poll_module</literal> configuration parameters can be used to forcibly enable or disable the build of this module. </para> </listitem> <listitem id="kqueue"> <para> <literal>kqueue</literal>—efficient method used on FreeBSD 4.1+, OpenBSD 2.9+, NetBSD 2.0, and Mac OS X. </para> </listitem> <listitem id="epoll"> <para> <literal>epoll</literal>—efficient method used on Linux 2.6+. <note> Some older distributions like SuSEĀ 8.2 provide patches that add epoll support to 2.4 kernels. </note> </para> </listitem> <listitem id="rtsig"> <para> <literal>rtsig</literal>—real time signals, efficient method used on Linux 2.2.19+. By default, the system-wide event queue is limited by 1024 signals. On loaded servers it may become necessary to increase this limit by changing the <path>/proc/sys/kernel/rtsig-max</path> kernel parameter. However, in Linux 2.6.6-mm2 this parameter is gone, and each process now has its own event queue. The size of each queue is limited by <literal>RLIMIT_SIGPENDING</literal> and can be changed with <link doc="ngx_core_module.xml" id="worker_rlimit_sigpending"/>. </para> <para> On queue overflow, nginx discards the queue and falls back to <literal>poll</literal> connection processing method until the situation gets back to normal. </para> </listitem> <listitem id="devpoll"> <para> <literal>/dev/poll</literal>—efficient method used on Solaris 7 11/99+, HP/UX 11.22+ (eventport), IRIX 6.5.15+, and Tru64 UNIX 5.1A+. </para> </listitem> <listitem id="eventport"> <para> <literal>eventport</literal>—event ports, efficient method used on Solaris 10. </para> </listitem> </list> </para> </section> </article>