Finally figured out the memory settings for Windows server

["Schultz, Gary - COMM" <GS...@commerce.state.wi.us>]

Thanks to all who provided assistance.

I figured it out for Windows server. Go to Start->Programs->Apache Tomcat
5.0->Configure Tomcat. This will open up a dialog box to change settings.
Click the middle tab, Java VM. There is a text area to add Java Options.
After the last entry, -Xrs, add -Xms<value> -Xmx<value>, where these are the
minimum size and maximum size of memory usage for the Java virtual machine
(JVM). Click Apply or OK, and restart the Tomcat service. 

One of the reasons I didn't think of this originally is that Apache Tomcat
5.0 was missing from Start-Programs on my development server. I like to test
in development before testing in production. Once I figured this out I
reinstalled Tomcat on my development server, which placed Apache Tomcat 5.0
in Start->Programs. From there I was able to set and test the memory
settings for the JVM in development, and eventually place these into
production. The XSP that hits the Oracle database now flies. I can gather a
10947 record, 9.5 megabyte data stream quickly. It's an entirely new web
site. It really performs well. I can't believe the improvement in
performance I received with the new memory settings. 

The increased performance isn't only with Cocoon. Performance of our ArcIMS
applications has increased considerably.

Once again, thanks to all who provided assistance.

Gary T. Schultz
Web Technical Administrator / GIS Coordinator
Wisconsin Department of Commerce
6th Floor
P.O. Box 7970
Madison, WI 
1-608-266-1283
 



-----Original Message-----
From: Schultz, Gary - COMM [mailto:GSchultz@commerce.state.wi.us]
Sent: Friday, October 29, 2004 12:51 AM
To: 'users@cocoon.apache.org'
Subject: Desperately seeking assistance and/or information on memory
setti ngs


I'm desperately seeking a real working solution to memory management in
Java-Tomcat-Cocoon in Windows. I continue to run into low memory errors. I
researched the Cocoon wiki, Java web sites and Tomcat web sites, but none of
the solutions appears to work. I can't get Cocoon to use more than the
default 64 MB of memory allotted by the JVM. I had initially gotten Cocoon
to free up 50% of the available memory, so I had 64 Meg in use, with around
30 Meg free. This initially help me with an XSP issue, but now when I check
Cocoon status I see that memory is getting low again, sometimes the status
page will show just over 1 meg of free memory. My XSP no longer works. 

Our configuration: 

2.4 GHz Xeon Processor Compaq server 
2.5 Gigabytes RAM 
Windows 2000 (5.00.2195 Service Pack 4) 
J2SDK 1.4.2_03 
Apache 2.0.49 
Tomcat 5.0.18 
Cocoon 2.1.5.1 

I trying to sell Cocoon as a tool to help with a project at work. If I can't
get consistent results with the XSP, management will not go with Cocoon and
will turn to another solution. This will be a major set back for greater use
of Cocoon in our agency. I'm also trying to sell other agencies in Wisconsin
on the benefits of Cocoon, but this recent set back will only make my
efforts more difficult. 

Any assistance I can get is greatly appreciated. I would like to see Cocoon
used for tasks other than a simple web publishing system. But the way it
looks right now, that will be a hard sell in my agency and to other State of
Wisconsin government agencies.

Gary T. Schultz 
Web Technical Administrator / GIS Coordinator 
Wisconsin Department of Commerce 
6th Floor 
P.O. Box 7970 
Madison, WI 
1-608-266-1283 

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