Hi Joe,


"Another useful tip would be to turn on incremental garbage collection. This
is always good to free up unused portions of memory that haven't been used
for a significant time interval."


Where can I find this feature to turn it on ?

Joe




________________________________
From: "Begosh, Kevin" <kevin.beg...@lmco.com>
To: arslist@ARSLIST.ORG
Sent: Tuesday, February 3, 2009 3:14:40 PM
Subject: Re: Apache Tomcat Memory Pool

** 
Yes this does help and I am on 7.1 as well so this would help out a lot.  We
are having those exact issue with Tomcat crashing.
 
Kevin Begosh, RSP
Tech Ops
Enterprise Business Services
301-791-3540 Phone
410-422-3623 Cell
kevin.beg...@lmco.com
 
From:Action Request System discussion list(ARSList)
[mailto:arsl...@arslist.org] On Behalf Of Joe DeSouza
Sent: Tuesday, February 03, 2009 1:13 PM
To: arslist@ARSLIST.ORG
Subject: Re: Apache Tomcat Memory Pool
 
** 
Thsi is more of a Tomcat setting than a 'BMC recommended' setting.
 
The golden rule for sizing tomcat memory is to not use more than 65% to 70%
of the available free memory before the tomcat service is started. This
gives the server at least 30% to 35% headroom.
 
With that in mind it is nice to have a max memory of at least around the 3
GB mark where the usage of the servers is about average.
 
Since you are using tomcat, if you are using Mid-Tier 7.1, I would recommend
to hop on the patch 006. In my experience here the earlier patches had a
memory issue, that addresses OutOfMemory errors that cause Tomcat to crash
which was addressed in Patch 006. Also the performance is way better as I
have noticed that it takes a relatively short time for the server to build
its cache after an initial restart on patch 006 (at least 5 to 10 times
faster) than it was on lets say Patch 003. I haven't tried patches in
between 003 and 006
 
Hope this helps..
 
Cheers
 
Joe
 

________________________________

From:"Begosh, Kevin" <kevin.beg...@lmco.com>
To: arslist@ARSLIST.ORG
Sent: Tuesday, February 3, 2009 12:53:46 PM
Subject: Apache Tomcat Memory Pool

** 
Does anyone know what the BMC recommended or what the best settings are for
the Apache Tomcat memory pool for the Mid Tier.  We are windows 2003 and we
have two mid tiers that are load balanced.
 
Kevin Begosh, RSP
Tech Ops 
Enterprise Business Services 
301-791-3540 Phone 
410-422-3623 Cell 
kevin.beg...@lmco.com




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