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

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Date: Tue, 2 Apr 2024 09:46:29 +0800
From: Oliver Sang <oliver.sang@...el.com>
To: Frederic Weisbecker <frederic@...nel.org>
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>, <oliver.sang@...el.com>
Subject: Re: [linus:master] [timers]  7ee9887703:
 stress-ng.uprobe.ops_per_sec -17.1% regression

hi, Frederic Weisbecker,

On Tue, Apr 02, 2024 at 12:46:15AM +0200, Frederic Weisbecker wrote:
> 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 a lot for information! if you want us test any patch, please let us know.

> 
> Thanks.