[GLLUG] KVM Performance

Ken Smith kens at kensnet.org
Mon Jun 15 18:43:23 UTC 2020

James Courtier-Dutton via GLLUG wrote:
> On Fri, 12 Jun 2020 at 08:55, Tim Woodall via GLLUG
> <gllug at mailman.lug.org.uk> wrote:
>> On Tue, 9 Jun 2020, Ken Smith via GLLUG wrote:
>>> Hi All,
>>> While in lockdown I decided to do some performance testing on KVM.
>> Interesting, I've been looking into this myself trying to improve
>> performance/reduce cpu usage.
> Hi,
> My experience with KVM is that it is pretty good, performance wise,
> with block devices.
> E.g. qcow2 or actual block devices.
> KVM appears very slow for USB devices.
> Some of your tests appear to include USB in the path.
> USB devices are also very slow when used with WINE. (Running windows
> app on Linux)
> Kind Regards
> James
Not in my tests. Mine had two SATA 7200rpm 3TB disks.

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