Linux RHEL4 VM

rajaniyer123 · 06-24-2012, 03:09 AM

Hi,

I am facing issue with one of the Linux - RHEL 4 VM - ESX 5, in which its timestmap is updating very slowly, i.e. sometimes it will update by just one minute instaed of 10 minutes.

I have compared all the required local & ntp configuration files with other server but could not found any discrepancy.

Only problem I found with this server during slow time update duration is high %wa [30-70%] as this is the Database Server, i feel that it might be the issue.

Please suggest.

Thanks
Rajan

Kustom42 · 06-25-2012, 11:52 AM

I have seen issues with VMs that are allocated four CPU cores when there are only two CPU sockets in the server. (Yes I'm aware each socket has 4 cores) This is called "Time slicing" and doing some google searching on it will give you some more info. But if your ESX box only has two CPUs and your VM has 4 cores allocated, try turning it down to 2 cores for the VM and see if your issue is resolved.