Re: [PATCH v2 0/5] blk-mq-sched: support request batch dispatching for sq elevator

[Yu Kuai]

Hi,

在 2025/07/31 16:18, Ming Lei 写道:
> batch dispatch may hurt io merge performance which is important for
> elevator, so please provide test data on real HDD. & SSD., instead of
> null_blk only, and it can be perfect if merge sensitive workload
> is evaluated.

Ok, I'll provide test data on HDD and SSD that I have for now.

For the elevator IO merge case, what I have in mind is that we issue
small sequential IO one by one with multiple contexts, so that bios
won't be merged in plug, and this will require IO issue > IO done, is
this case enough?

Thanks,
Kuai