Re: Tomcat Connections and Memory Limits

Robert Burdick Mon, 16 Jun 2003 23:15:12 -0700

Thanks!
At 09:46 PM 6/16/2003 -0700, you wrote:

Robert,
Check this email out:
http://www.mail-archive.com/[EMAIL PROTECTED]/msg07206.html

By the way, I found it searching google for "Xms Java Tomcat"

-Richard

At 08:49 PM 6/16/2003 -0700, you wrote:

Thanks for the help, but I'm still not there.

What is the syntax, and where in the catalina.bat file does it go?

At 07:04 PM 6/16/2003 -0700, you wrote:

Robert,
Type 'java -X' to get the list of extended options for the JVM. Look at the
-Xms, -Xmx, and -Xss options. You then configure the catalina.bat file with
the settings.

-Richard

At 08:56 AM 6/16/2003 -0700, you wrote:

Not a lot of session data being stored.  In fact, one of the only things I
was storing, a login flag, is no longer being stored in the session.

How does one change the JVM heap parameters?

Robert

At 11:33 AM 6/16/2003 -0400, you wrote:

Robert,
Are you storing many objects in the user's sessions? You might
encounter the
problem you are having if the data you are storing in your sessions is
large. How much memory do you have on your machine? You might want to tune
some of the heap parameters for the JVM.

-Richard

> -----Original Message-----
> From: Robert Burdick [SMTP:[EMAIL PROTECTED]
> Sent: Sunday, June 15, 2003 11:06 PM
> To:   [EMAIL PROTECTED]
> Subject:      Tomcat Connections and Memory Limits
>
> Hello All:
>
> I'm currently building an application that runs on Tomcat 4.1.24.  I
have
> been stress testing the application with Paesslers Webserver Stress
> Tool.  When I run a scenario that simulates 20 concurrent users,
hitting
> various JSP pages in the application every 15 seconds, the test
succeeds
> with no errors.  When I crank the number of simulated concurrent
users to
> 40, I relatively quickly run out of memory,etc.
>
>
> Are there any default limits built into Tomcat that specify the
number of
> concurrent users allowed, as well as any kind of memory limits?  The
> interesting thing is that when the Tomcat logs say I'm running out of
> memory, the system information on the PC shows that I have plenty
> left.  Thus I'm wondering if I'm hitting a Tomcat limitation of some
kind.
>
> Robert
>
>
> Robert Burdick
>
> [EMAIL PROTECTED]
> www.wAppearances.com
> (650)-917-8446 (office)
> (650)-906-3707 (cell)
>
>
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