High Java CPU usage question

stasouv · Post by **stasouv** » Mon Jan 13, 2014 11:49 pm

[quote user="1415bhwong"]Hi Stasouv,
Please share where are the Java components in the lib folders that we can move out.[/QUOTE]
Well, it's been long so my memory fails me, but you could start looking in:
/opt/zimbra/lib/jars

/opt/zimbra/lib/ext*/*

/opt/zimbra/zimlet*
Hint: Check the dates... Old components should date way back then the new ones.

mrcoffee11 · Post by **mrcoffee11** » Tue Jan 14, 2014 1:45 am

Thank you Stasouv and bhwong, this might be the problemsolver.

So weird no Zimbra-teammember is helping us out here.
Roderick

phoenix · Post by **phoenix** » Tue Jan 14, 2014 2:25 am

[quote user="mrcoffee11"]So weird no Zimbra-teammember is helping us out here.[/QUOTE]Why? These are Community support forums not official Zimbra support and people post here voluntarily and when they have the time.

1415bhwong · Post by **1415bhwong** » Tue Jan 14, 2014 2:36 am

This option, especially PermSize, help to prevent Java for mailboxd from hitting 100% too:
zmlocalconfig -e mailboxd_java_options="-server -Djava.awt.headless=true

-XX:+UseConcMarkSweepGC -XX:+UseParNewGC -XX:NewRatio=2

-XX:PermSize=196m -XX:MaxPermSize=350m -XX:SoftRefLRUPolicyMSPerMB=1

-verbose:gc -XX:+PrintGCDetails -XX:+PrintGCTimeStamps

-XX:+PrintGCApplicationStoppedTime

-XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/opt/zimbra/log

-XX:ErrorFile=/opt/zimbra/log”

1415bhwong · Post by **1415bhwong** » Tue Jan 14, 2014 2:38 am

If you are on single server, ensure that memcached is not running too.
Check which services are running and installed:

zmprov gs `zmhostname` | grep zimbraServiceEnabled

zmprov gs `zmhostname` | grep zimbraServiceInstalled
disable and remove memcached:

zmprov ms `zmhostname` -zimbraServiceEnabled memcached

zmprov ms `zmhostname` -zimbraServiceInstalled memcached

zmcontrol stop

zmcontrol start

mrcoffee11 · Post by **mrcoffee11** » Tue Jan 14, 2014 2:57 am

[quote user="10330phoenix"]Why? These are Community support forums not official Zimbra support and people post here voluntarily and when they have the time.[/QUOTE]

I see, thanks. This problem has been out there for years in several threads and so many people tried different solutions but it was never solved, so that's why I placed my remark the community needed input from the Zimbra team.

phoenix · Post by **phoenix** » Tue Jan 14, 2014 4:40 am

[quote user="mrcoffee11"]I see, thanks. This problem has been out there for years in several threads and so many people tried different solutions but it was never solved, so that's why I placed my remark the community needed input from the Zimbra team.[/QUOTE]Various problems with java have been addressed in previous releases of Zimbra, if you want to get the attention of Zimbra developers then file a bug report - that's the correct place for bug if you think that's what is happening on your server.