Subject: Re: [QUESTION] potential issue - unusual drops on XL710 (40gbit) cards with ksoftirqd hogging one of cpus near 100%

From: Jakub Kicinski <[email-masked]>
Date: Mon, 23 Oct 2023 09:55:45 -0700

On Mon, 23 Oct 2023 15:59:09 +0200 Michal Soltys wrote:
> - aggressively reclaimed page cache - up to ~200 GB memory is reclaimed 
> and immediately start filling up again with the data normally served by 
> those servers

I'd start from figuring out why this happens.
It may very well be a change / bug in memory management.