On 08/10/2021 04:11, Bart Van Assche wrote:
+
On 10/7/21 13:31, Kashyap Desai wrote:
quoted
I tested this patchset on 5.15-rc4 (master) -
https://github.com/torvalds/linux.git
#1 I noticed some performance regression @mq-deadline scheduler which is not
related to this series. I will bisect and get more detail about this issue
separately.
Please test this patch series on top of Jens' for-next branch (git://git.kernel.dk/linux-block). The mq-deadline performance on Jens' for-next branch should match that of kernel v5.13.
Kashyap did also mention earlier that he say the drop from v5.11 -> v5.12.
The only thing I saw possibly related there was Jan's work in https://lore.kernel.org/linux-block/20210111164717.21937-1-jack@suse.cz/ (local)
to fix a performance regression witnessed on megaraid sas for slower media.
But I quite doubtful that this is the issue.
Thanks,
John