Re: 10x I/O await times in 6.12

[Matt Fleming]

On Thu, 24 Apr 2025 at 03:35, Yu Kuai <yukuai1@xxxxxxxxxxxxxxx> wrote:
>
> Thanks for the test.
>
> Do you have any suggestions? For now, I can think of two different
> fixes:
>
> 1) clear time for the preempt case. On the one hand, preempt can be
> frequent, cauing performance degradation; On the other hand, this can't
> solve all the problems, for example, lots of interrupt or lots of BIO
> issued into one round of plug.
>
> 2) delay setting rq start time to flush plug, however, the latency value
> is still not accurate, and will be slightly smaller instead of greater.

Hi Kuai and Jens, is there any news here?

Thanks,
Matt