linux-kernel - Re: [sched/fair] 56498cfb04: netperf.Throughput

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Message-ID: <20210922124400.GQ4323@worktop.programming.kicks-ass.net>
Date:   Wed, 22 Sep 2021 14:44:00 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     kernel test robot <oliver.sang@...el.com>
Cc:     Mel Gorman <mgorman@...hsingularity.net>,
        LKML <linux-kernel@...r.kernel.org>, x86@...nel.org,
        lkp@...ts.01.org, lkp@...el.com, ying.huang@...el.com,
        feng.tang@...el.com, zhengjun.xing@...ux.intel.com,
        aubrey.li@...ux.intel.com, yu.c.chen@...el.com
Subject: Re: [sched/fair]  56498cfb04:  netperf.Throughput_tps -5.4%
 regression

On Sun, Sep 12, 2021 at 11:34:47PM +0800, kernel test robot wrote:
> 
> 
> Greeting,
> 
> FYI, we noticed a -5.4% regression of netperf.Throughput_tps due to commit:
> 
> 
> commit: 56498cfb045d7147cdcba33795d19429afcd1d00 ("sched/fair: Avoid a second scan of target in select_idle_cpu")
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master

Mel, was this in line with your own benchmarks?