[pve-devel] little iops with PVE kernel than vanilla 3.5

Stefan Priebe - Profihost AG s.priebe at profihost.ag
Mon Jul 23 09:32:57 CEST 2012


Am 22.07.2012 19:24, schrieb Alexandre DERUMIER:
> Maybe the iscsi module is faster on 3.5 ?
> But It could be also network driver, or something else in the kernel.
No both tested. Both has the same speed.

See my posted part here:
 > On my KVM Host i get constant 100.000 4k random iops with vanilla 3.5
 > and latest PVE kernel - so no difference.

> Did you have tested fio directly on the host ? (with the 2 differents kernel).
> I would like to see if the slowdown come from kvm or not.
Yes host speed is the same.

Stefan



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