[CentOS-virt] tick divider bugs

Sat May 3 19:53:07 UTC 2008
Allen Tsang <atsang at advance.net>

clocksource=pit is confirmed not working in VMware ESX.
You should be using clocksource=acpi_pm in addition to divider=10 to 
reduce idle load.

Binding to a single CPU is hardly a fix.  Always engineer *real* 
solutions, not poor workarounds! ;)

Kai Schaetzl wrote:
> Akemi Yagi wrote on Sat, 3 May 2008 06:06:31 -0700:
>> I
>> tried it but it seems to have the same problem as before - when used
>> with clocksource=pit, it hangs on bootup.
> For the record, this can also happen in other situations with VMWare. For 
> instance, I have seen that happen with a Suse 9.0 guest on VMWare Server 
> that is running on Win2k3. I was trying clocksource=pit because the clock 
> was jumping ahead of time like nothing. I figured that it is actually a 
> problem with the Suse kernel not liking that specific option (it didn't 
> hang with other clock options). I fixed the time problem by binding the 
> virtual machine to one CPU core. I didn't even have to shut off the power 
> saving features of the CPU.
> Kai