Moved a few more files into info/. (ab55094a) · Commits · CYBER - Cyber Security / TS 103 523 MSP / TLMSP / TLMSP Apache Httpd

docs/manual/process-model.html

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		<HTML><HEAD>
		<TITLE>Server Pool Management with MinSpareServers and MaxSpareServers</TITLE>
		</HEAD><BODY>

		<IMG SRC="../images/apache_sub.gif" ALT="">
		<H3>Server Pool Management with MinSpareServers and MaxSpareServers</H3>

		<HR>
		<P>
		We found that many people were using values for "MaxServers" either
		too high or too low, and were hanging themselves on it. The model we
		adopted is still based on long-lived minimal-forking processes, but
		instead of specifying one number of persistant processes, the
		webmaster specifies a maximum and minimum number of processes to be
		"spare" - every couple of seconds the parent checks the actual number
		of spare servers and adjusts accordingly. This should keep the number
		of servers concurrently running relatively low while still ensuring
		minimal forking.

		<P>

		We renamed the current StartServers to MinSpareServers, created
		separate StartServers parameter which means what it says, and renamed
		MaxServers to MaxSpareServers (though the old name still works, for
		NCSA 1.4 back-combatibility). The old names were generally regarded
		as too confusing.

		<P>

		The defaults for each variable are:

		<PRE>
		MinSpareServers 5
		MaxSpareServers 10
		StartServers 10
		</PRE>

		There is a compile-time limit of 150 absolute maximum number of
		simultaneous children that will be allowed, which can be overruled by
		"MaxClients", though we don't recommend changing that number unless

		<OL>
		<LI>You know you have the server resources to handle more
		<LI>You use the machine for other purposes and must limit the amount of memory
		Apache uses
		</OL>

		</body></html>