linux-kernel - Re: [tip: sched/core] sched/fair: Multi-LLC select_idle

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20230602070028.GC620383@hirez.programming.kicks-ass.net>
Date:   Fri, 2 Jun 2023 09:00:28 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     K Prateek Nayak <kprateek.nayak@....com>
Cc:     linux-kernel@...r.kernel.org, linux-tip-commits@...r.kernel.org,
        Tejun Heo <tj@...nel.org>, x86@...nel.org,
        Gautham Shenoy <gautham.shenoy@....com>
Subject: Re: [tip: sched/core] sched/fair: Multi-LLC select_idle_sibling()

On Fri, Jun 02, 2023 at 10:43:37AM +0530, K Prateek Nayak wrote:

> This makes sense but I wonder if new domain will add more load balancing
> jitters. Also this will require larger evaluation with some more diverse
> workloads.

Always the case, isn't it :-)

> Let me go check if we can get find the NPS2/NPS4 boundary when
> in NPS1 mode.

Yeah, that would be nice; if not you can see if you can reverse engineer
them from FMS and the topology bits we do have and file a request with
your hardware people to pretty please expose this going forward.