Re: [LKP] Re: [mm] 10befea91b: hackbench.throughput -62.4% regression

[Roman Gushchin]

On Tue, Feb 02, 2021 at 04:18:27PM +0800, Xing, Zhengjun wrote:
> 
> 
> On 1/14/2021 11:18 AM, Roman Gushchin wrote:
> > On Thu, Jan 14, 2021 at 10:51:51AM +0800, kernel test robot wrote:
> > > Greeting,
> > > 
> > > FYI, we noticed a -62.4% regression of hackbench.throughput due to commit:
> > Hi!
> > 
> > Commit "mm: memcg/slab: optimize objcg stock draining" (currently only in the mm tree,
> > so no stable hash) should improve the hackbench regression.
> The commit has been merged into Linux mainline :
>  3de7d4f25a7438f09fef4e71ef111f1805cd8e7c ("mm: memcg/slab: optimize objcg
> stock draining")
> I test the regression still existed.

Hm, so in your setup it's about the same with and without this commit?

It's strange because I've received a letter stating a 45.2% improvement recently:
https://lkml.org/lkml/2021/1/27/83

Thanks!