Re: [workqueue] 1a0a67f5ef: phoronix-test-suite.fio.SequentialRead.IO_uring.Yes.No.1MB.DefaultTestDirectory.mb_s -17.7% regression
From: Schspa Shi
Date: Wed Jul 13 2022 - 02:42:21 EST
kernel test robot <oliver.sang@xxxxxxxxx> writes:
> Greeting,
>
> FYI, we noticed a -17.7% regression of phoronix-test-suite.fio.SequentialRead.IO_uring.Yes.No.1MB.DefaultTestDirectory.mb_s due to commit:
>
This performance drop can be fixed by convert to wq_pool_attach_mutex
to a rwsem, or add another lock for this. I will upload a new PATCH
version for this.
--
BRs
Schspa Shi