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From "Carl" <c...@etrak-plus.com>
Subject Re: Tomcat dies suddenly
Date Wed, 03 Feb 2010 20:59:41 GMT
Chuck,

Thanks for your reply.

I only added those options recently (over the weekend) so they were not 
there at the time of the last failure.  Without them, the GC pauses are 
insignificant.  I added the print options in the hope that I could see 
something right at the time of failure.  The concurrent options can probably 
go as I don't see they are of any value.

Thanks,

Carl


----- Original Message ----- 
From: "Caldarale, Charles R" <Chuck.Caldarale@unisys.com>
To: "Tomcat Users List" <users@tomcat.apache.org>
Sent: Wednesday, February 03, 2010 3:28 PM
Subject: RE: Tomcat dies suddenly


> From: Carl [mailto:carl@etrak-plus.com]
> Subject: Re: Tomcat dies suddenly
>
> I have now added some java options:
>
> -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode
> -XX:+PrintGCDetails -XX:+PrintGCTimeStamps
> -XX:+HeapDumpOnOutOfMemoryError
> -XX:HeapDumpPath=/usr/local/tomcat/logs

> If you can think of any rock I might look under

I would try running without concurrent GC and the PrintGC options and see if 
the failures disappear.  (Obviously, that will take some time before any 
confidence can be had.)  Hopefully, the resulting GC pause times won't be a 
significant problem.

 - Chuck


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