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Alfresco in multi core enviroment

Question asked by adanecki on Sep 17, 2015
Latest reply on Jan 30, 2017 by ksh
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

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