linux-kernel - Re: [linus:master] [timers] 7ee9887703: stress-ng.uprobe.ops_per

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Message-ID: <Zgs5NxoUUoGIkuQO@pavilion.home>
Date: Tue, 2 Apr 2024 00:46:15 +0200
From: Frederic Weisbecker <frederic@...nel.org>
To: kernel test robot <oliver.sang@...el.com>
Cc: Anna-Maria Behnsen <anna-maria@...utronix.de>, oe-lkp@...ts.linux.dev,
	lkp@...el.com, linux-kernel@...r.kernel.org,
	Thomas Gleixner <tglx@...utronix.de>, ying.huang@...el.com,
	feng.tang@...el.com, fengwei.yin@...el.com
Subject: Re: [linus:master] [timers]  7ee9887703:
  stress-ng.uprobe.ops_per_sec -17.1% regression

Le Wed, Mar 27, 2024 at 04:39:17PM +0800, kernel test robot a écrit :
> 
> 
> Hello,
> 
> 
> we reported
> "[tip:timers/core] [timers]  7ee9887703:  netperf.Throughput_Mbps -1.2% regression"
> in
> https://lore.kernel.org/all/202403011511.24defbbd-oliver.sang@intel.com/
> 
> now we noticed this commit is in mainline and we captured further results.
> 
> still include netperf results for complete. below details FYI.
> 
> 
> kernel test robot noticed a -17.1% regression of stress-ng.uprobe.ops_per_sec
> on:

The good news is that I can reproduce.
It has made me spot something already:

   https://lore.kernel.org/lkml/ZgsynV536q1L17IS@pavilion.home/T/#m28c37a943fdbcbadf0332cf9c32c350c74c403b0

But that's not enough to fix the regression. Investigation continues...

Thanks.