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Re: [Qemu-devel] Following up questions related to QEMU and I/O Thread
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From: |
Paolo Bonzini |
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Subject: |
Re: [Qemu-devel] Following up questions related to QEMU and I/O Thread |
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Date: |
Fri, 3 May 2019 12:05:25 -0600 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.6.1 |
On 03/05/19 10:21, Wei Li wrote:
> Got it, thanks Stefan for your clarification!
Hi Wei,
Stefan and I should be posting a patch to add Linux SCSI driver
batching, and an implementation for virtio-scsi.
Paolo
> Wei
>
> On 5/1/19, 9:36 AM, "Stefan Hajnoczi" <address@hidden> wrote:
>
> On Mon, Apr 29, 2019 at 10:56:31AM -0700, Wei Li wrote:
> >Does this mean the performance could be improved via adding Batch I/O
> submission support in Guest driver side which will be able to reduce the
> number of virtqueue kicks?
>
> Yes, I think so. It's not obvious to me how a Linux SCSI driver is
> supposed to implement batching though. The .queuecommand API doesn't
> seem to include information relevant to batching.
>
> Stefan
>
>
>
>