linux-kernel - Re: [RFC PATCH 3/3] sched: Implement shared wakequeue in CFS

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 for Android: free password hash cracker in your pocket

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

Message-ID: <20230613083203.GR4253@hirez.programming.kicks-ass.net>
Date:   Tue, 13 Jun 2023 10:32:03 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     David Vernet <void@...ifault.com>
Cc:     linux-kernel@...r.kernel.org, mingo@...hat.com,
        juri.lelli@...hat.com, vincent.guittot@...aro.org,
        rostedt@...dmis.org, dietmar.eggemann@....com, bsegall@...gle.com,
        mgorman@...e.de, bristot@...hat.com, vschneid@...hat.com,
        joshdon@...gle.com, roman.gushchin@...ux.dev, tj@...nel.org,
        kernel-team@...a.com
Subject: Re: [RFC PATCH 3/3] sched: Implement shared wakequeue in CFS


Still gotta read it properly, however:

On Tue, Jun 13, 2023 at 12:20:04AM -0500, David Vernet wrote:
> Single-socket | 32-core | 2-CCX | AMD 7950X Zen4
> Single-socket | 72-core | 6-CCX | AMD Milan Zen3
> Single-socket | 176-core | 11-CCX | 2-CCX per CCD | AMD Bergamo Zen4c

Could you please also benchmark on something Intel that has these stupid
large LLCs ?

Because the last time I tried something like this, it came apart real
quick. And AMD has these relatively small 8-core LLCs.