Hello,
Today I noticed my VM server cooling fan starting up, which is a sure tell sign that a process is running amok.
I found that indeed zimbra processes mysqld and java were using 100% cpu. This is unusual for this zimbra server - normally very low cpu usage
On internet's advice, I increased the RAM allocation - it was about 80% in use - and restarted the server.
After reboot, zimbra mysqld and java jumped back up to high cpu. the extra ram allocation unused.
The version was 8.7.3 GA network edition. I also upgraded to 8.7.6, but the same behaviour continues.
I found this blog http://www.alexkuo.info/?p=88 and this one http://www.thatsmyview.net/2010/04/17/o ... d-low-ram/
Are these commands still applicable?
[update] about 2 hours in, the crisis seems over - cpu usage is back around 10 %
no clue what just happened.
glenn
Sudden high cpu on zimbra/mysqld/java
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- Advanced member
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- ZCS/ZD Version: 8.7.0_GA_1659.RHEL6_64 @ CentOS_6
Re: Sudden high cpu on zimbra/mysqld/java
Hi,
have you checked what's going on during this time with zmmytop? I found some mailboxes running amok through this.
have you checked what's going on during this time with zmmytop? I found some mailboxes running amok through this.
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- Advanced member
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- ZCS/ZD Version: Release 8.8.15.GA.3829.UBUNTU16.64
Re: Sudden high cpu on zimbra/mysqld/java
Hello,
No , I haven't looked at that, that'll be for a next occurrence, also time to learn what zmmytop learns.
At the moment, zmmytop shows eveything to be quiet
thanks for the help
No , I haven't looked at that, that'll be for a next occurrence, also time to learn what zmmytop learns.
At the moment, zmmytop shows eveything to be quiet
thanks for the help
Re: Sudden high cpu on zimbra/mysqld/java
Hi,
I have the same issue after upgrade to 8.9. In my case Only mailbox process runs 100% CPU and loading mail slow. I still haven't restart the server and check. If you change any configurations please let me know.
Thanks,
Thameera
I have the same issue after upgrade to 8.9. In my case Only mailbox process runs 100% CPU and loading mail slow. I still haven't restart the server and check. If you change any configurations please let me know.
Thanks,
Thameera