Re: [PATCH] blk-mq: allow hardware queue to get more tag while sharing a tag set

[Bart Van Assche]

On 8/14/21 2:43 AM, yukuai (C) wrote:
> test result:
> | test round | with this patch | without this patch |
> | ---------- | --------------- | ------------------ |
> | 1          | 4310k           | 4265k              |
> | 2          | 4295k           | 4327k              |
> | 3          | 4217k           | 4213k              |
> | 4          | 4355k           | 4236k              |
> | 5          | 4315k           | 4337k              |
> | average    | 4294k           | 4275k              |

Hi Kuai,

Thank you for having taken the time to rerun the IOPS measurements with
kernel debugging disabled. According to my calculations the standard
deviation (50K) is larger than the difference between the averages
(19K). Unfortunately that makes it hard to draw any conclusion ...

Bart.