Re: [PATCH] virtio_blk: set the default scheduler to none

Li Feng
2023-12-27T07:25:12Z

> On Dec 26, 2023, at 23:38, Michael S. Tsirkin <mst@redhat.com> wrote:
>
> On Tue, Dec 26, 2023 at 05:01:40PM +0800, Li Feng wrote:
>> I don't have ideas right now to answer Christoph/Paolo's question.
>
> Paolo did some testing on this thread and posted some concerns.
> Do you disagree with his analysis?

Paolo gave a very detailed data analysis. Indeed, in some low queue depth
scenarios, the data dropped somewhat. However, I suspect that it may be
caused by other problems (such as test fluctuations) rather than the benefits
brought by deadline.

BTW, I think 128 queue depth test is a very important and common performance
test item for storage devices.

Thanks,
Li

>
> --
> MST
>