CAS memory issues

Wed Sep 3 16:42:59 EDT 2008

Is there a way to optimize the registry cleaner?

Sorry, I'm not very familiar with CAS.

--- On Wed, 9/3/08, Scott Battaglia <scott.battaglia at gmail.com> wrote:
From: Scott Battaglia <scott.battaglia at gmail.com>
Subject: Re: CAS memory issues
To: "Yale CAS mailing list" <cas at tp.its.yale.edu>
Date: Wednesday, September 3, 2008, 3:33 PM

We're running the following:
* Tomcat 5.5.25 (or .26, can't recall exactly, we've also used Tomcat 5.5.20, 5.5.17, 5.0.28)
* Java 6 (though we used to use Java 5 with no issues)
* Apache 2.2 (used to use Apache 1.3)

* Solaris 10

If you're running out of memory, are you sure the registry cleaner is still enabled?

-Scott

On 9/3/08, Derek Ethier <derek.ethier at humber.ca> wrote:

Scott, out of curiousity, what version of tomcat and java are you running? We're gone with the settings that Renato posted (Xms 512 Xmx 1600) and we're still hitting swap after about 10 hours of use (which isn't necessarily a bad thing, just worried) and we still require a tomcat restart every morning.

We're only running tomcat/apache on the server, nothing else. Tomcat 5.5.20 and Java 1.6.0_03.

Yale CAS mailing list <cas at tp.its.yale.edu> on September-03-08 at 1:13 PM -0400 wrote:

We have 50K users and we have similar JAVA_OPTS.  I don't know how many tickets we issue a day but I have some 120K+ authentications per day (which would mean that more tickets are generated).

Anything else live in that JVM?  Any special customizations?

-Scott

On 9/3/08, Renato Giron <renato.giron at yahoo.com> wrote:

All our distance learning students authenticate through CAS into their blackboard account. We also have several casified applications. It may just be too much load. Performance is great though.

I noticed the documentation for JDBCTicketRegistry and BerkleyDB is empty. I would really like to play with these alternatives to ticket registry.

--- On Wed, 9/3/08, Scott Battaglia <scott.battaglia at gmail.com> wrote:

From: Scott Battaglia <scott.battaglia at gmail.com>
Subject: Re: CAS memory issues
To: renato.giron at yahoo.com, "Yale CAS mailing list" <cas at tp.its.yale.edu>
Date: Wednesday, September 3, 2008, 10:05 AM

We maintain a list of documentation here:
http://www.ja-sig.org/wiki/display/CASUM/Home

You'll find the different ticket stores there.  But again, it would seem weird that you're having memory issues, as the same mechanism has been used for years (though your usage pattern could be significantly different I guess).

-Scott

On 9/2/08, Renato Giron <renato.giron at yahoo.com> wrote:

Thank you Scott,

I will try to get the memory dump on the production server (since I don't think it will be worth  doing it on test.)

In the mean time, Is there a documentation that I can read for setting up DB ticket store?

Thanks for your time and support.

--- On Tue, 9/2/08, Scott Battaglia <scott.battaglia at gmail.com> wrote:

From: Scott Battaglia <scott.battaglia at gmail.com>
Subject: Re: CAS memory issues
To: renato.giron at yahoo.com, "Yale CAS mailing list" <cas at tp.its.yale.edu>
Date: Tuesday, September 2, 2008, 5:15 PM

We've been using CAS in production since 2005 with the same in-memory ticket store (and most likely less allocated memory and haven't experienced that problem).  If you can, use a tool to get a memory dump and see what objects are being held on to.

Also if you wrote any custom code make sure its not holding on to anything accidentally.

-Scott

On 9/2/08, Renato Giron <renato.giron at yahoo.com> wrote:

Hello friends,

I posted this message several months ago. I still have the same memory issue even after upgrading to 3.2.1. Can some one point me to the right direction for utilizing a database for tickets registry storage?

Thanks in advance.

"My CAS 3.1 application does not free up memory considerably during garbage 
collection. The amount of memory that is freed up decreases on each garbage
collection until there is no more memory available and the application crashes.
I looked at the CAS logs and it seems to be clearing expired tickets every three 
hours.

I am using the WAR file that comes with the distribution with no changes (except
for UI) My application is used by approximately 30K users and it seems to be
handling the load with no problems.

I am new to CAS so I would like to hear some advice from the experts. Is this a
CAS design issue? Is there a way to optimize tickets registry? Can tickets be
registered on database engines (like MySQL)?

This is my current configuration: 

-Windows 2003 Server
-Tomcat 5.5 JRE 1.6
-CAS 3.1
-Xms512m
-Xmx1600m"

_______________________________________________
Yale CAS mailing list
cas at tp.its.yale.edu
"ttp://tp.its.yale.edu/mailman/listinfo/cas

-- 
-Scott Battaglia
PGP Public Key Id: 0x383733AA
LinkedIn: 
"ttp://www.linkedin.com/in/scottbattaglia 

_______________________________________________
Yale CAS mailing list
cas at tp.its.yale.edu
"ttp://tp.its.yale.edu/mailman/listinfo/cas

-- 
-Scott Battaglia
PGP Public Key Id: 0x383733AA
LinkedIn: 
"ttp://www.linkedin.com/in/scottbattaglia 

_______________________________________________

Yale CAS mailing list

cas at tp.its.yale.edu

"ttp://tp.its.yale.edu/mailman/listinfo/cas

-- 

-Scott Battaglia

PGP Public Key Id: 0x383733AA

LinkedIn: "ttp://www.linkedin.com/in/scottbattaglia_______________________________________________

Yale CAS mailing list

cas at tp.its.yale.edu

"ttp://tp.its.yale.edu/mailman/listinfo/cas

_______________________________________________

Yale CAS mailing list

cas at tp.its.yale.edu

http://tp.its.yale.edu/mailman/listinfo/cas

-- 
-Scott Battaglia
PGP Public Key Id: 0x383733AA
LinkedIn: http://www.linkedin.com/in/scottbattaglia
_______________________________________________
Yale CAS mailing list
cas at tp.its.yale.edu
http://tp.its.yale.edu/mailman/listinfo/cas

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://tp.its.yale.edu/pipermail/cas/attachments/20080903/1a7e557d/attachment.html 