[pve-devel] Limited IOP/s on Dual Xeon KVM Host

[Stefan Priebe]

Am 11.11.2012 10:14, schrieb Dietmar Maurer:
>> Got it fixed by Bios update... crazy.
>
> So you can't see any regression in IOPS with more cores?
In this subject i wasn't talking about simply more cores in VM but about 
having a Dual Xeon instead of a Single Xeon as host.

It seems Supermicro just had a bug in their X9 Dual Socket mainboard bios...

> Can you speedup things with process pinning?
> Just want to make sure that NUMA does not play any role here.
Yes i still can speed up with pinning but this also applies to a Single 
Xeon. When i pin the fio process inside VM i get 18.000 instead of 
15.000 iops.

Greets,
Stefan