Re: [PATCH RESEND 0/4] memory tiering: calculate abstract distance based on ACPI HMAT

Bharata B Rao
2023-08-01T02:35:23Z

On 24-Jul-23 11:28 PM, Andrew Morton wrote:
> On Fri, 21 Jul 2023 14:15:31 +1000 Alistair Popple <apopple@nvidia.com> wrote:
>
>> Thanks for this Huang, I had been hoping to take a look at it this week
>> but have run out of time. I'm keen to do some testing with it as well.
>
> Thanks. I'll queue this in mm-unstable for some testing. Detailed
> review and testing would be appreciated.

I gave this series a try on a 2P system with 2 CXL cards. I don't trust the
bandwidth and latency numbers reported by HMAT here, but FWIW, this patchset
puts the CXL nodes on a lower tier than DRAM nodes.

Regards,
Bharata.