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view xml/en/docs/events.xml @ 2204:001f2d905fd9
Documented fileSystem methods in njs.
author | Yaroslav Zhuravlev <yar@nginx.com> |
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date | Tue, 26 Jun 2018 16:13:07 +0300 |
parents | 7e983e0199eb |
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<!-- 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="6"> <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 macOS. </para> </listitem> <listitem id="epoll"> <para> <literal>epoll</literal>—efficient method used on Linux 2.6+. <note> The <literal>EPOLLRDHUP</literal> (Linux 2.6.17, glibc 2.8) and <literal>EPOLLEXCLUSIVE</literal> (Linux 4.5, glibc 2.24) flags are supported since 1.11.3. </note> <note> Some older distributions like SuSEĀ 8.2 provide patches that add epoll support to 2.4 kernels. </note> </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, method used on Solaris 10+ (due to known issues, it is recommended using the <literal>/dev/poll</literal> method instead). </para> </listitem> </list> </para> </section> </article>