Re: IO performance test on the tcm-vhost scsi

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On Wed, Jun 13, 2012 at 11:13 AM, mengcong <mc@xxxxxxxxxxxxxxxxxx> wrote:
>                    seq-read        seq-write       rand-read     rand-write
>                    8k     256k     8k     256k     8k   256k     8k   256k
> ----------------------------------------------------------------------------
> bare-metal          67951  69802    67064  67075    1758 29284    1969 26360
> tcm-vhost-iblock    61501  66575    51775  67872    1011 22533    1851 28216
> tcm-vhost-pscsi     66479  68191    50873  67547    1008 22523    1818 28304
> virtio-blk          26284  66737    23373  65735    1724 28962    1805 27774
> scsi-disk           36013  60289    46222  62527    1663 12992    1804 27670
[...]
> In tcm-vhost-iblock test, the emulate_write_cache attr was enabled.
> In virtio-blk test, cache=none,aio=native were set.
> In scsi-disk test, cache=none,aio=native were set, and LSI HBA was used.

If the LSI HBA was used then there are no benchmark results for
userspace virtio-scsi?

Stefan
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