Re: [FIX PATCH] mm: pcp: fix pcp->free_count reduction on page allocation

From: Nikhil Dhama
Date: Thu Jan 09 2025 - 06:43:19 EST


> The present division by two appears to be somewhat randomly chosen.
> And as far as I can tell, this patch proposes replacing that with
> another somewhat random adjustment.
>
> What's the actual design here? What are we attempting to do and why,
> and why is the proposed design superior to the present one?

We are further analyzing both the designs and their impact on pcp list.


> Nice, but might other workloads on other machines get slower?

We are studying the impact of this on other network workloads like netperf,
and will post those results soon.