[Swan-dev] Test Suite: speed effects of hardware differences

Andrew Cagney andrew.cagney at gmail.com
Thu Jul 1 18:18:03 UTC 2021


Set KVM_LOCALDIR=/tmp/pool ?

On Thu, 1 Jul 2021 at 09:23, D. Hugh Redelmeier <hugh at mimosa.com> wrote:

> I have two similar machines for running tests.
> - ThinkCentre M93p Tiny
> - i5-4570T CPU @ 2.90GHz (Haswell generation)
> - as far as I know, all available firmware updates for security (i.e.
>   slowdowns)
> - Fedora 34 (arrived at by many upgrades)
>
> They differ in:
> - the first has a 2.5" HDD and 16G of RAM.
> - the second has a SATA SSD and 8G of RAM
>
> A complete kvm-check took
> - on the first  6:10:46 elapsed time
> - on the second 5:25:39 elapsed time
>
> The first system takes about 14% more time than the second.
>
> I suspect that the majority of the effect was disk speed.
> I would have guessed that disk speed would have mattered more.
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