Re: [pipe] d60337eff1: phoronix-test-suite.noise-level.0.activity_level 144.0% improvement

From: Linus Torvalds
Date: Thu Nov 07 2019 - 11:52:13 EST


On Thu, Nov 7, 2019 at 1:03 AM lkp report check <rong.a.chen@xxxxxxxxx> wrote:
>
> FYI, we noticed a 144.0% improvement of phoronix-test-suite.noise-level.0.activity_level due to commit:
>
> commit: d60337eff18a3c587832ab8053a567f1da9710d2 ("[RFC PATCH 04/11] pipe: Use head and tail pointers for the ring, not cursor and length [ver #3]")

That sounds nice, but is odd. That commit really shouldn't change
anything noticeable. David, any idea?

Linus