Each Apache process connects to Tomcat when (if) it needs to. Call that a "connection".
Apache processes do not disconnect from Tomcat. Call those "idle connections".
idle connections <= connections <= number of Apache processes <= MaxClients
Of course some of the connections are used at a certain moment.
active connections <= connections
But at any moment in time, an Apache process that is not connected to Tomcat MAY receive a request, and start a connection to Tomcat. So, it is possible (and it actually happens most of the time) that even if your Apache is serving static content, all of the Apache processes are actually connected to Tomcat.
This means that connections <= MaxClients, with the strict equality being possible.
If you have more than one instance of Tomcat, the same thing happens.
An Apache process that is connected to one of your Tomcat servers MAY receive a request that has to be processed by your second Tomcat. So it will connect to it, without dropping the connection to the first Tomcat.
So maxProcessors >= MaxClients is true for any scenario with Apache and Tomcat.
Even worse...
If you have two Apache and two Tomcat,
maxProcessors >= sum(MaxClients) for all your Apache servers.
Otherwise, busy sites experience hangs.
Of course, if you do not use Apache as a frontend, and you simply have a load balancer, you can keep maxProcessors much lower.
Yours,
Antonio Fiol
Pepijn Palmans - Kangaroot wrote:
That is not true. This can be only true if you have only one instance of tomcat, and ALL (even static!!!) content is serverd by tomcat.
Under normal setup you let your static content be served by apache, and only use tomcat when needed. So you might wanna have more apache processes.
Pepijn
On Fri, 20 Feb 2004 [EMAIL PROTECTED] wrote:
As I know, the maxProcessor value must match
the MaxClients value in apache, because each apache
process must connect to a processor in Tomcat.
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