Friday, August 30, 2019

Re: VM CPU usage with TSC timecounter

Running more tests, seems a bit random either with acpihpet0 or tsc, you
are right. So please disregard, I have associated the wrong thing.
Happens either with debian or the alpine, and either timecounter.
Sometimes vm process maxes out, sometimes it's ok.

Thanks!

---
Oriol Demaria
2FFED630C16E4FF8

On 29/08/2019 22:53, Mike Larkin wrote:
> On Thu, Aug 29, 2019 at 10:29:40PM +0100, Oriol Demaria wrote:
>> I have been following the patching of the TSC. So I don't have
>> problems on
>> the Ryzen now using TSC with the mouse and so on, but I have a problem
>> with
>> the vms. The CPU maxes out on the Ryzen 5 (on Intel is fine) when I
>> run a vm
>> (debian).
>>
>> But when I change the timecounter back to acpihpet0 and restart vmd,
>> the CPU
>> usage is normal again. Does anyone else has this problem?
>>
>> Regards.
>>
>> --
>> Oriol Demaria
>> 2FFED630C16E4FF8
>>
>
> 40400 _vmd 10 0 8195M 505M idle fsleep 1:35 1.46% vmd
>
> Not here. That's an ubuntu19 vm on Ryzen 7.
>
> Does this happen all the time or is it random? We do have a
> longstanding
> well known bug where a VM can get stuck and spin to 100%, that's
> unrelated
> to TSC though.
>
> -ml

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