From: Peter Zijlstra <peterz@infradead.org>
To: K Prateek Nayak <kprateek.nayak@amd.com>
Cc: mingo@redhat.com, juri.lelli@redhat.com,
vincent.guittot@linaro.org, linux-kernel@vger.kernel.org,
dietmar.eggemann@arm.com, rostedt@goodmis.org,
bsegall@google.com, mgorman@suse.de, vschneid@redhat.com,
clm@meta.com
Subject: Re: [RFC][PATCH 0/5] sched: Try and address some recent-ish regressions
Date: Sat, 14 Jun 2025 12:15:28 +0200 [thread overview]
Message-ID: <20250614101528.GJ2278213@noisy.programming.kicks-ass.net> (raw)
In-Reply-To: <2d747fb5-81e7-48ac-ae51-db737a170b81@amd.com>
On Fri, Jun 13, 2025 at 08:58:56AM +0530, K Prateek Nayak wrote:
> - schbench (old) has a consistent regression for 16, 32, 64,
> 128, 256 workers (> CCX size, < Overloaded) except for with
> 256 workers case with TTWU_QUEUE_DEFAULT which shows an
> improvement.
>
> - new schebench has few regressions around 32, 64, and 128
> workers for wakeup and request latency.
Right, so I actually made Chris' favourite workloads worse with these
patches :/
Let me go try this again..
prev parent reply other threads:[~2025-06-14 10:15 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-05-20 9:45 Peter Zijlstra
2025-05-20 9:45 ` [RFC][PATCH 1/5] sched/deadline: Less agressive dl_server handling Peter Zijlstra
2025-06-03 16:03 ` Juri Lelli
2025-06-13 9:43 ` Peter Zijlstra
2025-05-20 9:45 ` [RFC][PATCH 2/5] sched: Optimize ttwu() / select_task_rq() Peter Zijlstra
2025-06-09 5:01 ` Mike Galbraith
2025-06-13 9:40 ` Peter Zijlstra
2025-06-13 10:20 ` Mike Galbraith
2025-05-20 9:45 ` [RFC][PATCH 3/5] sched: Split up ttwu_runnable() Peter Zijlstra
2025-05-20 9:45 ` [RFC][PATCH 4/5] sched: Add ttwu_queue controls Peter Zijlstra
2025-05-20 9:45 ` [RFC][PATCH 5/5] sched: Add ttwu_queue support for delayed tasks Peter Zijlstra
2025-06-06 15:03 ` Vincent Guittot
2025-06-06 15:38 ` Peter Zijlstra
2025-06-06 16:55 ` Vincent Guittot
2025-06-11 9:39 ` Peter Zijlstra
2025-06-16 12:39 ` Vincent Guittot
2025-06-06 16:18 ` Phil Auld
2025-06-16 12:01 ` Peter Zijlstra
2025-06-16 16:37 ` Peter Zijlstra
2025-06-13 7:34 ` Dietmar Eggemann
2025-06-13 9:51 ` Peter Zijlstra
2025-06-13 10:46 ` Peter Zijlstra
2025-06-16 8:16 ` Dietmar Eggemann
2025-05-28 19:59 ` [RFC][PATCH 0/5] sched: Try and address some recent-ish regressions Peter Zijlstra
2025-05-29 1:41 ` Chris Mason
2025-06-14 10:04 ` Peter Zijlstra
2025-06-16 0:35 ` Chris Mason
2025-05-29 10:18 ` Beata Michalska
2025-05-30 9:00 ` Peter Zijlstra
2025-05-30 10:04 ` Chris Mason
2025-06-02 4:44 ` K Prateek Nayak
2025-06-13 3:28 ` K Prateek Nayak
2025-06-14 10:15 ` Peter Zijlstra [this message]
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