linux-kernel - Re: [tip:sched/core] [sched/fair] 089d84203a: pts.schbench.32.usec,_99.9th_latency

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Message-ID: <20251218083747.GI3707891@noisy.programming.kicks-ass.net>
Date: Thu, 18 Dec 2025 09:37:47 +0100
From: Peter Zijlstra <peterz@...radead.org>
To: kernel test robot <oliver.sang@...el.com>
Cc: oe-lkp@...ts.linux.dev, lkp@...el.com, linux-kernel@...r.kernel.org,
	x86@...nel.org, Ingo Molnar <mingo@...nel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Dietmar Eggemann <dietmar.eggemann@....com>,
	Juri Lelli <juri.lelli@...hat.com>, Mel Gorman <mgorman@...e.de>,
	Shrikanth Hegde <sshegde@...ux.ibm.com>,
	Valentin Schneider <vschneid@...hat.com>,
	Vincent Guittot <vincent.guittot@...aro.org>,
	aubrey.li@...ux.intel.com, yu.c.chen@...el.com
Subject: Re: [tip:sched/core] [sched/fair]  089d84203a:
 pts.schbench.32.usec,_99.9th_latency_percentile 52.4% regression

On Thu, Dec 18, 2025 at 12:59:53PM +0800, kernel test robot wrote:
> 
> 
> Hello,
> 
> kernel test robot noticed a 52.4% regression of pts.schbench.32.usec,_99.9th_latency_percentile on:
> 
> 
> commit: 089d84203ad42bc8fd6dbf41683e162ac6e848cd ("sched/fair: Fold the sched_avg update")
> https://git.kernel.org/cgit/linux/kernel/git/tip/tip.git sched/core

Well, that obviously wasn't the intention. Let me pull that patch :/