I compiled my own kernels for c4 and c5 that dropped the HZ down to 100. For me, it's a big improvement, especially when it comes to keeping the clock correct in the vm. And yes, performance is slightly better, because the vms aren't killing the hardware with unnecessary cpu usage trying to process all those ticks.
Thanks for the kernels. Hopefully they will be eventually added to the centosplus repos.
________________________________________
From: centos-bounces@xxxxxxxxxx [centos-bounces@xxxxxxxxxx] On Behalf Of Ray Van Dolson [rvandolson@xxxxxxxx]
Sent: Friday, August 03, 2007 1:35 PM
To: centos@xxxxxxxxxx
Subject: Re: CentOS 4 vs 5 for VMware?
> Also, there is a special kernel that helps out on running VMWare that
> changes the default speed of the system timer, reducing the LA on the
> host system especially if your guests are mostly idle. The kernel is
> available for both 4 and 5. Please look at
> http://bugs.centos.org/view.php?id=2189 for more info.
Very interesting. Wasn't aware of that. Thanks for posting. Have you
noticed tangible differences when running stock vs the kernels
mentioned there?
Ray
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