Re: [LKP] [fs] b6509f6a8c: will-it-scale.per_thread_ops -12.6% regression

From: Xing Zhengjun
Date: Mon Oct 12 2020 - 22:42:08 EST




On 10/12/2020 4:18 PM, Mel Gorman wrote:
On Mon, Oct 12, 2020 at 02:20:26PM +0800, Xing Zhengjun wrote:
Hi Mel,

It is a revert commit caused the regression, Do you have a plan to fix
it? Thanks. I re-test it in v5.9-rc8, the regression still existed.


The revert caused a *performance* regression but the original
performance gain caused a functional failure. The overall performance
should be unchanged. I have not revisited the topic since.

Thanks for the explanation. We will stop tracking it.

--
Zhengjun Xing