Re: [PATCH] mm/vmpressure: scale window size based on machine memory and CPU count

Michal Hocko
2026-03-02T08:56:45Z

On Fri 27-02-26 16:15:55, Benjamin Lee McQueen wrote:
> on systems of different sizes, the fixed 512 page window may not
> be suitable and cause excessive false positive memory pressure
> notifications.

Please be more specific about the issue you are trying to have fixed.
The above is way too generic. How much memory the system has, what do
you consider false positive and why. What is the workload. Etc...

> or should window size be capped to avoid excessive notification
> delays on very large systems?
>
> v2: better commit msg, also tried to fix the whitespace.

Also please refrain from sending new versions in a quick succession
and wait for more feedback to come.

Last but not lease if this is a more of an idea rather than something
aimed to be merged make the fact explicit by RFC prefix to PATCH.

There is much more you can read about the process in Documentation/process/

Thanks
--
Michal Hocko
SUSE Labs