Messages in this thread | | | From | Vitaly Kuznetsov <> | Subject | Re: ...\n | Date | Wed, 01 Jun 2022 10:03:06 +0200 |
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Peter Zijlstra <peterz@infradead.org> writes:
> On Tue, May 31, 2022 at 02:52:04PM +0000, Durrant, Paul wrote:
...
>> >> I'll bite... What's ludicrous about wanting to run a guest at a lower >> CPU freq to minimize observable change in whatever workload it is >> running? > > *why* would you want to do that? Everybody wants their stuff done > faster. >
FWIW, I can see a valid use-case: imagine you're running some software which calibrates itself in the beginning to run at some desired real time speed but then the VM running it has to be migrated to a host with faster (newer) CPUs. I don't have a real world examples out of top of my head but I remember some old DOS era games were impossible to play on newer CPUs because everything was happenning too fast. Maybe that's the case :-)
-- Vitaly
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