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From Julian Löffelhardt <jul...@austria.fm>
Subject Re: Tomcat stability problem
Date Sun, 29 Dec 2002 03:41:55 GMT
Hi,

I'm using jdk 1.4.1 on redHat Linux, and -Xincgc didn't do that well.
I was experimenting with java gc settings and -Xincgc dropped my overall
performance about 75%.

Maybe it works better with other JVM/OS combinations but it seems that when
using linux one is best of with the -client VM and no fancy gc settings ( I
also think that the incremental garbage collector would be enabled by
default if it were any good)

Beside incrementig -Xmx and -Xms I had great succcess with -XX:PermSize
and -XX:MaxPermSize to resolve several memory issues I had when using to
many distinct JSP-pages.


llap,
julian


----- Original Message -----
From: "Ben Glorie" <ben.glorie@bricsnet.com>
To: "Tomcat Users List" <tomcat-user@jakarta.apache.org>
Sent: Saturday, December 28, 2002 6:33 PM
Subject: RE: Tomcat stability problem


> GC delay certainly sounds plausible, I'll try to set the -Xinccg option as
> suggested by Bill.
>
> We're running Linux 7.3 and Java 1.4.1_01. Is this combination also
> sensitive to SMP problems? If that would be the problem, what would I have
> to do?
>
> Thanks to you all for the suggestions so far, which have all been very
> helpful.
>
> -----Original Message-----
> From: Noel J. Bergman [mailto:noel@devtech.com]
> Sent: Saturday, December 28, 2002 5:38 AM
> To: Tomcat Users List
> Subject: RE: Tomcat stability problem
>
>
> > We're running Tomcat 4.1.12 on a dual-proc PIII with 512MB RAM.
>
> Which JVM and OS?  You are running an SMP box.  Sun JVM 1.4.0, for
example,
> was notorious for SMP issues on linux.
>
> --- Noel
>
>
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