Re: virtio-blk performance regression and qemu-kvm

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Il 07/03/2012 11:39, Martin Mailand ha scritto:
> The host disk can at max. 13K iops, in qemu I get at max 6,5K iops,
> that's around about 50% overhead. All the test were with 4k reads, so I
> think we are mostly latency bound.

For latency tests, running without ioeventfd could give slightly better
results (-global virtio-blk-pci.ioeventfd=off).

Paolo
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