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Zimbra is high on memory usage with mysqld and java, how to resolve?

This is using zimbra 6.0.7 64-bit, with SuSE Linux enterprise server 11 SP1. This is using 8GB RAM, to support 120 mailboxes. The total size of /opt/zimbra is slightly more than 200GB.

Recently, some users complained that the mail process is pretty slow. I checked the top and found with that MySQLd and Java (multiple threads) are always stood high at 45% - 80%. Please see the attached snapshot. Any memory tuning to optimize the usage? Or does this mean there is a memory bottleneck, as 8GB RAM is not enough?

Thanks in advance...
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MezzutOzil
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MezzutOzil
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1 Solution
 
BawerCommented:
Since your server is 64bit and it can use unlimited memory and as the memory banks are also not much expensive better use more memory, second make sure that you have the latest fixes for MYSQL which help in memory tuning since in my case i am using MS SQLs and such issues i have faced alot...
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MezzutOzilAuthor Commented:
Hi Bawer,

I can't confirm it is the hardware bottleneck on RAM. How about any performance tuning for zimbra process on MySQLd and Java?
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BawerCommented:
If the matter is not with memory then try looking for latest patches for mysql which certainly will help in improving the performance as far as Java is concerned nothing will be required.
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MezzutOzilAuthor Commented:
Hi Bawer,


BTW, how to do patching for MySQL?
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BawerCommented:
Can you tell me the version of MYSQL you are using...


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MezzutOzilAuthor Commented:
Confirm the problem is hardware bottleneck, after upgrading ram to 16GB, everything solved.
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MezzutOzilAuthor Commented:
I've requested that this question be closed as follows:

Accepted answer: 0 points for MezzutOzil's comment http:/Q_27387522.html#36972905

for the following reason:

Good
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BawerCommented:
Objection :

MezzutOzil:

I think you look at my first comment :)....
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