Hi, I think you need more info before you do much more performance tuning, but, if it helps at all, here are the settings we are using in production with 32bit RHEL5:

http://lso.umsystem.edu/~pottingerhj/article/25/dspace-3-tomcat-tweaks

--Hardy

Sent from my iPad

On Jun 26, 2013, at 7:17 AM, "Hilton Gibson" <hilton.gibson@gmail.com> wrote:

It should allow you to get a proper java dump the next time.
The dump should tell you what happened.
I am not a java expert but it seems like the direction to go.
Personally I have better results regularly using Ubuntu as a server.
Perhaps you should reconsider Redhat EL, I believe it has very old versions of software.


On 26 June 2013 13:25, Ady Wahyudi Paundu <adywp@unhas.ac.id> wrote:

Not yet, but i'm implementing it now...
i'll let you know the result
in the mean time, can you explain what it is for?

TIA
AdyWP

On 06/26/2013 07:27 PM, Hilton Gibson wrote:


On 26 June 2013 12:47, Ady Wahyudi Paundu <adywp@unhas.ac.id> wrote:

here is my machine info:
- dual cpu (xeon 2.2G) IBM machine with 2x8 GB memory
- work only for repository (plus postgredb)
- with modjk to work with apache
- using only xmlui-mirage
- Current JAVA_OPTS="-Xmx8192M -Xms8192M -XX:MaxPermSize=1024M -XX:PermSize=1024M -XX:+UseParallelGC -XX:-UseLoopPredicate -Dfile.encoding=UTF-8 -Dcom.sun.management.jmxremote=true"
- OS: RedHat Enterprise 5.6 64 bit
- DSpace 3.1

    
Thanks
AdyWP





--
Hilton Gibson
Linux Systems Administrator
JS Gericke Library
Room 1025C
Stellenbosch University
Private Bag X5036
Stellenbosch
7599
South Africa

Tel: +27 21 808 4100 | Cell: +27 84 646 4758
http://library.sun.ac.za
http://scholar.sun.ac.za
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