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Alfresco in multi core enviroment

adanecki
Champ in-the-making
Champ in-the-making
Hello,

we have installed Alfresco 5.0.d Community Edition.
Our server is Ubuntu 12.04.2 LTS on Proxmox Virtualization Platform.

System:
CPU : AMD Opteron™ Processor 6180 SE (48 core)
RAM: 64GB

Alfresco is the only VM on this Proxmox Server. There are no other VM.
For Alfresco we set 32 cpu cores, and 60GB of RAM

Java settings:
JAVA_OPTS="-Xms8192M -Xmx50G -Xss1024k
Rest 10Gb is lest for other precesses ,like DB engine, LibreOffice

problem is witch Apache Tomcat, cause it uses only 1 , mostly 2 cpu cores.
and second problem is LibreOffice, which after restart uses 100 % cpu - 1 core.
Of course after LibreOffice restart it's Libre process is back to normal cpu usage.

We have standard Alfresco installation without any java version changes
Tomcat 7.0
java version "1.6.0_35"
OpenJDK Runtime Environment (IcedTea6 1.13.7) (6b35-1.13.7-1ubuntu0.12.04.2)
OpenJDK 64-Bit Server VM (build 23.25-b01, mixed mode)

The issue is , how to force Java and LibreOffice to use other cpu cores.
It's olways 1 core with 100% load, and rest 30 cores are doing nothing.
Overall system load is getting higher, while most cpu core are jobless.

The RAM usage is at 30-40%, so it's not RAM problem , disk usage is the same, in peak 10-15MB, so it's not an issue.


Does any know how to change this behaviour.


Regards
Adam
10 REPLIES 10

ksh
Champ in-the-making
Champ in-the-making

I just happen to figure that out myself. very helpful. thx.