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git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@77156 13f79535-47bb-0310-9956-ffa450edef68
52 lines
1.5 KiB
HTML
52 lines
1.5 KiB
HTML
<HTML><HEAD>
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<TITLE>Server Pool Management</TITLE>
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</HEAD><BODY>
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<!--#include virtual="header.html" -->
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<H1>Server Pool Management</H1>
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<HR>
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<P>
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We found that many people were using values for "MaxServers" either
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too high or too low, and were hanging themselves on it. The model we
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adopted is still based on long-lived minimal-forking processes, but
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instead of specifying one number of persistent processes, the
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web-master specifies a maximum and minimum number of processes to be
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"spare" - every couple of seconds the parent checks the actual number
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of spare servers and adjusts accordingly. This should keep the number
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of servers concurrently running relatively low while still ensuring
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minimal forking.
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<P>
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We renamed the current StartServers to MinSpareServers, created
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separate StartServers parameter which means what it says, and renamed
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MaxServers to MaxSpareServers (though the old name still works, for
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NCSA 1.4 back-compatibility). The old names were generally regarded
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as too confusing.
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<P>
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The defaults for each variable are:
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<PRE>
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MinSpareServers 5
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MaxSpareServers 10
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StartServers 10
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</PRE>
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There is a compile-time limit of 150 absolute maximum number of
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simultaneous children that will be allowed, which can be overruled by
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"MaxClients", though we don't recommend changing that number unless
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<OL>
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<LI>You know you have the server resources to handle more
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<LI>You use the machine for other purposes and must limit the amount of memory
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Apache uses
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</OL>
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<!--#include virtual="footer.html" -->
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</body></html>
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