On 2015-2-8 18:10, Paolo Bonzini wrote:
>
>
> On 07/02/2015 12:26, Wangting (Kathy) wrote:
>> OK, Thank you very much for your detailed explanation.
>>
>> But I have another question about the big change from qemu-1.5.3 to
>> qemu-1.6.0-rc0.
>>
>> When I use ramdisk for IO performance testing,
On 07/02/2015 12:26, Wangting (Kathy) wrote:
> OK, Thank you very much for your detailed explanation.
>
> But I have another question about the big change from qemu-1.5.3 to
> qemu-1.6.0-rc0.
>
> When I use ramdisk for IO performance testing, the result is as follows.
>
> [fio-test]
OK, Thank you very much for your detailed explanation.
But I have another question about the big change from qemu-1.5.3 to
qemu-1.6.0-rc0.
When I use ramdisk for IO performance testing, the result is as follows.
[fio-test] rw bs iodepthjobs bw iops
---
On 03/02/2015 03:56, Wangting (Kathy) wrote:
> Sorry, I find that the patch of "virtio-scsi: Optimize virtio_scsi_init_req"
> can slove this problem.
Great that you could confirm that. :)
> By the way, can you tell me the reason of the change about cdb and sense?
cdb and sense are variable-size
On 03/02/2015 03:31, Wangting (Kathy) wrote:
> Hi Paolo,
>
> Recently I test IO performance with virtio-scsi, and find out that the patch
> of
> "virtio-scsi: add support for the any_layout feature" affects IO performance
> of model
> with 4KB 32iodepth sequence read.
>
> Why cdb and sense is
Sorry, I find that the patch of "virtio-scsi: Optimize virtio_scsi_init_req"
can slove this problem.
By the way, can you tell me the reason of the change about cdb and sense?
On 2015-2-3 10:31, Wangting (Kathy) wrote:
> Hi Paolo,
>
> Recently I test IO performance with virtio-scsi, and find out
Hi Paolo,
Recently I test IO performance with virtio-scsi, and find out that the patch of
"virtio-scsi: add support for the any_layout feature" affects IO performance of
model
with 4KB 32iodepth sequence read.
Why cdb and sense is removed from the struct of VirtIOSCSICmdReq and
VirtIOSCSICmdRes
