From: brian Date: Thu, 21 Nov 1996 09:11:35 +0000 (+0000) Subject: Moved these files back, as they are related to day to day operations. X-Git-Tag: mpm-3~4 X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=a4fa27ae11f32371f91f7c10b3d402963bede334;p=apache Moved these files back, as they are related to day to day operations. git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@77006 13f79535-47bb-0310-9956-ffa450edef68 --- diff --git a/docs/manual/process-model.html b/docs/manual/process-model.html new file mode 100644 index 0000000000..f2c22f9ccc --- /dev/null +++ b/docs/manual/process-model.html @@ -0,0 +1,50 @@ + +Server Pool Management with MinSpareServers and MaxSpareServers + + + +

Server Pool Management with MinSpareServers and MaxSpareServers

+ +
+

+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. + +

+ +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. + +

+ +The defaults for each variable are: + +

+MinSpareServers		5
+MaxSpareServers		10
+StartServers		10
+
+ +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 + +
    +
  1. You know you have the server resources to handle more +
  2. You use the machine for other purposes and must limit the amount of memory +Apache uses +
+ + + +