On Thu, 19 May 2022 12:52:28 +0200, Jan Kara wrote:
> this patch series restores regression in dbench for large number of processes
> that was introduced by c65e6fd460b4 ("bfq: Do not let waker requests skip
> proper accounting"). The detailed explanation is in the first patch but the
> culprit in the end was that with large number of dbench clients it often
> happened that flush worker bfqq replaced jbd2 bfqq as a waker of the bfqq
> shared by dbench clients and that resulted in lot of idling and reduced
> throughput.
>
> [...]
Applied, thanks!
[1/4] bfq: Relax waker detection for shared queues
commit: f950667356ce90a41b446b726d4595a10cb65415
[2/4] bfq: Allow current waker to defend against a tentative one
commit: c5ac56bb6110e42e79d3106866658376b2e48ab9
[3/4] bfq: Remove superfluous conversion from RQ_BIC()
commit: e79cf8892e332b9dafc99aef02189a2897eced24
[4/4] bfq: Remove bfq_requeue_request_body()
commit: a249ca7dfbce1eb82bcd3a5a6bb21daeade20469
Best regards,
--
Jens Axboe
