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List:       tomcat-user
Subject:    Re: Apache with MaxClients > maxThreads possible?
From:       Filip Hanik - Dev Lists <devlists () hanik ! com>
Date:       2008-06-28 16:59:44
Message-ID: 48666E00.2070500 () hanik ! com
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use JkOptions +DisableReuse on the httpd/mod_jk side,
this turns off keep alives, even though it sounds slower, we often see a 
performance increase of the overall site, due to much lower resource 
usage, and not having to match MaxClients to maxThreads

Filip

Jukka Merinen wrote:
> Hi all,
>
> I have a following configuration: One front-end Apache 2.2 server with 
> worker MPM that is using mod_jk 1.2 to connect to several back-end 
> Tomcat 6.0 servers.
>
> Problem: The Apache MaxClients is 1000, whereas Tomcat AJP connector 
> maxThreads in each Tomcat is 100. If simultaneous connections to 
> single Tomcat exceed 100, the Tomcat+mod_jk combo locks up completely. 
> I understand that this is a known bug or limitation.
>
> What I'm asking is that is there any way to configure this kind of 
> system so that the Tomcat maxThreads could be lower than the Apache's 
> MaxClients with mod_jk, so that the system would return an error 
> message if AJP connector's maxThreads is exceeded instead of locking up.
>
> This seems to be possible with HTTP connector and mod_proxy: If HTTP 
> connector's maxThreads is exceeded Tomcat simply refuses the 
> connection and Apache returns a sane error message. But is there a way 
> to do it with mod_jk?
>
> -Jukka
>
>
>
>
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>


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