High CPU usage on Citrix XEN - Ubuntu 8.04 - ZCS 6.0

[PURSUTE]

Hi Guys,

I am having some trouble with a fresh installation of ZCS 6.0.

Hardware:
Intel Q9400 Core 2 Quad @ 2.66 GHz
8GB RAM
4 SATA drives in true hardware RAID 5

XEN Server is presentiung one CPU, 2GB RAM and a 50GB drive to the VM.

The OS is Ubuntu 8.04 LTS installed as per this wiki.

This server will have extremely low usage: only 2 mailboxes, maybe a couple more later.

The problem is that the CPU is constantly spiking to 100% usage and then returning to idle. The servier is functioning fine, just really slowly. I can send mail in and out, and connect to both the user and admin interfaces.

Using 'htop' I can see that there are a couple of zimbra/java related processes that sit at 100% CPU usage briefly before dissapearing abourt every 5 minutes or so.

I also notice that there are some 30 processes called:

/opt/zimbra/java/bin/java

Are there supposed to be that many?

I cant seem to find anything relevant in the zimbra or system logs.

Any help would be greatly appreciated.

[Klug]

Welcome to the forum.

Xen in only supported with 64 bits VM, is it your case ?

RAID5 for Zimbra (and Xen) is not a good idea (soooooooooo slow).

A "CPU spike" each minute is not so anormal. You should search the forum about it.

[PURSUTE]

Thanks Klug. I managed to get the spikes down to an acceptable level using some of the suggestions on this thread

Regarding the RAID 5, do you think it is a big issue considering the small scale of my implimentation?

[maxxer]

Originally Posted by PURSUTE

Regarding the RAID 5, do you think it is a big issue considering the small scale of my implimentation?

even 2g of ram is very poor for Zimbra, but consider your situation, both raid and ram will do fine, IMHO