Re: [PATCH 5.13 073/127] pipe: avoid unnecessary EPOLLET wakeups under normal loads

Sasha Levin
2021-08-24T17:42:13Z

On Tue, Aug 24, 2021 at 10:00:33AM -0700, Linus Torvalds wrote:
>On Tue, Aug 24, 2021 at 9:57 AM Sasha Levin <sashal@kernel.org> wrote:
>>
>> From: Linus Torvalds <torvalds@linux-foundation.org>
>>
>> [ Upstream commit 3b844826b6c6affa80755254da322b017358a2f4 ]
>
>This one has an odd performance regression report associated with it.
>
>Honestly, I don't understand the performance regression, but that's
>likely on me, not on the kernel test robot.
>
>So I'd hold off on applying it for now. It *might* be some odd test
>robot hiccup, but ..

I'll drop it for now.

Ideally we wouldn't take it at all, but I don't think any of us wants to
field "my tests have regressed!" questions for the next 5 years or so.

Thanks!

--
Thanks,
Sasha