On Mon, May 5, 2008 at 10:39 AM, Allen Tsang atsang@advance.net wrote:
I've tried almost everything else under the sun with a number of test VMs on our ESX setup, and the best combination of low idle load and accurate timekeeping was achieved using that combination of settings. Yes, ntpd is off. Feel free to give it a shot; I don't take credit for it, I found notes about this on the CentOS bug tracker (http://bugs.centos.org/view.php?id=2189). Like other fine folks have mentioned on this list (much to their amusement likely, now), clocksource=pit is nice, but it doesn't work with divider=10 and hangs on boot.
As you can see in that bug tracker, we have spent a lot of time to come up with 100Hz kernels, kernel-vm. These kernels do not have problems with clocksource=pit. Until this bug is eliminated upstream, I think kernel-vm offered by CentOS may be the best solution (shameless advertisement). I just hope it won't take long for the upstream developers to find a fix for the problem associated with the divider= option.
Akemi / toracat