Re: Tomcat maximum heap size on Linux

Wed, 07 Jan 2004 15:15:14 -0800

I've seen this answer twice today, "make scripts to stress-test your app". How do you do that? What am I connecting to and looking for in a script that stress-tests a Java servlet or web app? I'm only asking because I'm a little green at this and there are obviously other people with the same needs who are failing to do this preemptively.

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John Beamon
Systems Administrator
Franklin American Mortgage
eml: [EMAIL PROTECTED]
web: www.franklinamerican.com

Shapira, Yoav wrote: 
Howdy,
Stress-test it with your max expected load and see what happens.
There's no artificial reason for it to stop at 150MB.

Yoav Shapira
Millennium ChemInformatics



-----Original Message-----
From: Mindaugas Genutis [mailto:[EMAIL PROTECTED]
Sent: Wednesday, January 07, 2004 2:45 PM
To: Tomcat Users List
Subject: RE: Tomcat maximum heap size on Linux


I expect to use it a few hundred Megabytes. It was quickly increasing

in

my eyes and stopped on 150Mb. Looks like its the system roof. Could it

be

so?


Howdy,
If it doesn't need more than 150MB, it won't use more than 150MB...

Are

you blindly playing around with heap numbers, or did you actually
determine 1GB was required to handle your max expected load?

Yoav Shapira
Millennium ChemInformatics



-----Original Message-----
From: Mindaugas Genutis [mailto:[EMAIL PROTECTED]
Sent: Wednesday, January 07, 2004 2:37 PM
To: Tomcat Users List
Subject: Tomcat maximum heap size on Linux


I wanted to increase Tomcat's maximum heap size. I did it by putting

the

following string in the catalina.sh file (I'm running RedHat Linux):

CATALINA_OPTS="-Djava.awt.headless=true -Xmx1024m"

So, Tomcat can use 1Gb of my RAM.

However, I'm observing Tomcat's usage with "top" under Linux and it

stops

growing at 150Mb.

Looks like this option doesn't work. Where else could I increase it?

I'm using JDK 1.4.2, Tomcat 4.1.24

--
Kaunas Regional Distance Education Center
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Phone: +370 674 05232
WWW: http://distance.ktu.lt




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Kaunas Regional Distance Education Center
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Phone: +370 674 05232
WWW: http://distance.ktu.lt




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