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From Chris J├Âlly <>
Subject [users@httpd] Calculating settings for mpm-worker/mod_proxy_ajp/Tomcat
Date Tue, 15 Dec 2009 10:43:22 GMT


can anybody tell me how to adjust the different min/max settings for the 

MPM worker, mod_proxy_ajp and Tomcat connector so that the configuration

is aligned and there is no miss configuration on either side?


On Tomcat's side i use the default value for the AJP connector of maxThread=200,

on mod_proxy_ajp the MPM workers  ThreadsPerChild of 25. I think that 

ThreadsPerchild can increase to ThreadLimit of 64 if the load increases, right?


If I understand correct then the ServerLimit of the MPM worker is set to default 16.


Is it correct if I assume that under full load Apache might create:


ThreadLimit * ServerLimit = 64 * 16 = 600 connections 


via mod_proxy_ajp to Tomcat? Is this correct?


And how does the MaxClients and MaxThreads of the Tomcat AJP connector fit in that

scenario? (MaxChilds of MPM worker is set to 150)





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