diff options
Diffstat (limited to 'docs/manual/mod/prefork.html')
| -rw-r--r-- | docs/manual/mod/prefork.html | 171 |
1 files changed, 0 insertions, 171 deletions
diff --git a/docs/manual/mod/prefork.html b/docs/manual/mod/prefork.html deleted file mode 100644 index 26372a9ed5..0000000000 --- a/docs/manual/mod/prefork.html +++ /dev/null @@ -1,171 +0,0 @@ -<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"> -<HTML> -<HEAD> -<TITLE>Apache MPM prefork</TITLE> -</HEAD> - -<!-- Background white, links blue (unvisited), navy (visited), red (active) --> -<BODY - BGCOLOR="#FFFFFF" - TEXT="#000000" - LINK="#0000FF" - VLINK="#000080" - ALINK="#FF0000" -> -<!--#include virtual="header.html" --> - -<H1 ALIGN="CENTER">Multi-Processing Module prefork</H1> -<P> -This Multi-Processing Module implements a non-threaded, pre-forking -web server. -</P> - -<P><A -HREF="module-dict.html#Status" -REL="Help" -><STRONG>Status:</STRONG></A> MPM -<BR> -<A -HREF="module-dict.html#SourceFile" -REL="Help" -><STRONG>Source File:</STRONG></A> prefork.c -<BR> -<A -HREF="module-dict.html#ModuleIdentifier" -REL="Help" -><STRONG>Module Identifier:</STRONG></A> mpm_prefork_module -</P> - -<H2>Summary</H2> - -<p>This Multi-Processing Module (MPM) implements a non-threaded, -pre-forking web server which handles request in a manner very similar -to the default behavior of Apache 1.3 on Unix.</p> - -<p>A single control process is responsible for launching child -processes which listen for connections and serve them when they -arrive. Apache always tries to maintain several <em>spare</em> or -idle server processes, which stand ready to serve incoming requests. -In this way, clients do not need to wait for a new child processes to -be forked before their requests can be served.</p> - -<p>The <code>StartServers</code>, <code>MinSpareServers</code>, -<code>MaxSpareServers</code>, and <code>MaxServers</code> regulate how -the parent process creates children to serve requests. In general, -Apache is very self-regulating, so most sites do not need to adjust -these directives from their default values. Sites which need to serve -more than 256 simultaneous requests may need to increase -<code>MaxClients</code>, while sites with limited memory may need to -decrease <code>MaxClients</code> to keep the server from thrashing -(swapping memory to disk and back). More information about tuning -process creation is provided in the <a -href="../misc/perf-tuning.html">performance hints</a> documentation.</p> - -<p>While the parent process is usually started as root under Unix -in order to bind to port 80, the child processes are launched -by Apache as a less-privileged user. The <code>User</code> and -<code>Group</code> directives are used to set the privileges -of the Apache child processes. The child processes must -be able to read all the content that will be served, but -should have as few privileges beyond that as possible. -In addition, unless <a href="../suexec.html">suexec</a> is used, -these directives also set the privileges which will be inherited -by CGI scripts.</p> - -<p><code>MaxRequestsPerChild</code> controls how frequently the server -recycles processes by killing old ones and launching new ones.</p> - -<p>See also: <a href="../bind.html">Setting which addresses and ports -Apache uses</a>.</p> - -<H2>Directives</H2> -<UL> -<li><a href="mpm_common.html#coredumpdirectory">CoreDumpDirectory</a></li> -<li><a href="mpm_common.html#group">Group</a></li> -<li><a href="mpm_common.html#pidfile">PidFile</a></li> -<li><a href="mpm_common.html#listen">Listen</a></li> -<li><a href="mpm_common.html#listenbacklog">ListenBacklog</a></li> -<li><a href="mpm_common.html#lockfile">LockFile</a></li> -<li><a href="mpm_common.html#maxclients">MaxClients</a></li> -<li><a href="mpm_common.html#maxrequestsperchild">MaxRequestsPerChild</a></li> -<li><a href="#maxspareservers">MaxSpareServers</a></li> -<li><a href="#minspareservers">MinSpareServers</a></li> -<li><a href="mpm_common.html#scoreboardfile">ScoreBoardFile</a></li> -<li><a href="mpm_common.html#sendbuffersize">SendBufferSize</a></li> -<li><a href="mpm_common.html#startservers">StartServers</a></li> -<li><a href="mpm_common.html#user">User</a></li> -</UL> - -<p><hr> - - -<H2><A NAME="maxspareservers">MaxSpareServers directive</A></H2> -<!--%plaintext <?INDEX {\tt MaxSpareServers} directive> --> -<A - HREF="directive-dict.html#Syntax" - REL="Help" -><STRONG>Syntax:</STRONG></A> MaxSpareServers <EM>number</EM><BR> -<A - HREF="directive-dict.html#Default" - REL="Help" -><STRONG>Default:</STRONG></A> <CODE>MaxSpareServers 10</CODE><BR> -<A - HREF="directive-dict.html#Context" - REL="Help" -><STRONG>Context:</STRONG></A> server config<BR> -<A - HREF="directive-dict.html#Status" - REL="Help" -><STRONG>Status:</STRONG></A> core<P> - -The MaxSpareServers directive sets the desired maximum number of <EM>idle</EM> -child server processes. An idle process is one which is not handling -a request. If there are more than MaxSpareServers idle, then the parent -process will kill off the excess processes.<P> - -Tuning of this parameter should only be necessary on very busy sites. -Setting this parameter to a large number is almost always a bad idea.<P> - -<P> - -See also <A HREF="#minspareservers">MinSpareServers</A> and -<A HREF="mpm_common.html#startservers">StartServers</A>.<P><HR> - -<H2><A NAME="minspareservers">MinSpareServers directive</A></H2> -<!--%plaintext <?INDEX {\tt MinSpareServers} directive> --> -<A - HREF="directive-dict.html#Syntax" - REL="Help" -><STRONG>Syntax:</STRONG></A> MinSpareServers <EM>number</EM><BR> -<A - HREF="directive-dict.html#Default" - REL="Help" -><STRONG>Default:</STRONG></A> <CODE>MinSpareServers 5</CODE><BR> -<A - HREF="directive-dict.html#Context" - REL="Help" -><STRONG>Context:</STRONG></A> server config<BR> -<A - HREF="directive-dict.html#Status" - REL="Help" -><STRONG>Status:</STRONG></A> core<P> - -The MinSpareServers directive sets the desired minimum number of <EM>idle</EM> -child server processes. An idle process is one which is not handling -a request. If there are fewer than MinSpareServers idle, then the parent -process creates new children at a maximum rate of 1 per second.<P> - -Tuning of this parameter should only be necessary on very busy sites. -Setting this parameter to a large number is almost always a bad idea.<P> - -This directive has no effect on Microsoft Windows. - -<P> - -See also <A HREF="#maxspareservers">MaxSpareServers</A> and -<A HREF="mpm_common.html#startservers">StartServers</A>. - - -<!--#include virtual="footer.html" --> -</BODY> -</HTML> |