Re: [PATCH 0/3] slab: support memoryless nodes with sheaves

Vlastimil Babka (SUSE)
2026-04-13T12:11:57Z

On 4/8/26 15:04, Jon Hunter wrote:
> Hi Vlastimil,
>
> On 11/03/2026 17:22, Vlastimil Babka (SUSE) wrote:
>
>
> I have also observed a performance regresssion for Linux v7.0-rc for
> some graphics related tests we run. I bisected to ...
>
> # first bad commit: [e47c897a29491ade20b27612fdd3107c39a07357] slab: add
> sheaves to most caches
>
> I came across Ming's report and hence, found this series. I have also
> tested the 3 patches in this series and it did appear to help with one
> test, but overall I am still seeing a ~25% performance regression (the

Hm with the numactl output you posted, such configuration shouldn't be
affected by this series at all, so wonder if it's just noise.

> tests are taking about 25% longer to run). I am not the owner or author
> of these specific tests and I have not dived into see exactly what is
> taking longer, but I just know they are taking longer to run.

Are the tests available somewhere you can point us to?

Thanks,
Vlastimil

> Anyway, I have not seen any recent updates on this, and so I am not sure
> if there are any other updates or what the current status of this is?
>
> If there are any more patches available I will be happy to test.
>
> Thanks!
> Jon
>