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From JNeuhoff <neuh...@mhccorp.com>
Subject Re: mod_jk replacement?
Date Tue, 23 Jan 2007 20:46:46 GMT

> connection timeout on mod_jk side is in seconds, on tomcat side is in
> milliseconds. So Mladens suggestion had a missing trailing 0 to make the
> params on the two sides fit. I think he meant connectionTimeout=600000
> to make it fit the 600 on the mod_jk side.

Thanks, you are right, there was a missing zero. I'll repeat the test
tomorrow with the correct value.

Your explanation with the threads agrees with my observations.

> Finally: from your last statement I'm not sure that I understand, what
> the real problems are now:

It is not a memory leak problem, even though with the growing number of
threads it can grow to over 150MB, but it then stays at that level. 

The problem are the err=-53 conditions. While both Apache2 and Tomcat
continue to run and receive and respond to incoming requests, Apache2 is
unable to receive Tomcat's reponses (err=-53). Also, though Apache2
continues to serve other static pages just fine according to its access.log,
the client web browser never receives the responses. Instead, it complaints
about failed connections. The only static pages the web browser was able to
receive was the standard 503 error page (Service Unavailable) when
attempting to access the Tomcat web service. I ended up re-starting our live
server twice during the last 24 hours.

> If you can easily reproduce, a mod_jk log with
> JkLogLevel debug would be helpful.

I'll do that tomorrow.

> mod_jk error 53: the only remaining problem. Does it imply a problem on
> the user side?

I had our sysadmin check the hardware and network equipment today, and he
also examined the Windows 2003 event logs. He couldn't find anything
abnormal.

J.Neuhoff

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