From: Borislav Petkov <bp@alien8.de>
To: Feng Tang <feng.tang@intel.com>
Cc: "Paul E. McKenney" <paulmck@kernel.org>,
kernel test robot <oliver.sang@intel.com>,
Jonathan Lemon <bsd@fb.com>, Tony Luck <tony.luck@intel.com>,
LKML <linux-kernel@vger.kernel.org>,
x86@kernel.org, lkp@lists.01.org, lkp@intel.com,
ying.huang@intel.com, zhengjun.xing@intel.com
Subject: Re: [x86/mce] 7bb39313cd: netperf.Throughput_tps -4.5% regression
Date: Tue, 19 Jan 2021 14:17:59 +0100 [thread overview]
Message-ID: <20210119131759.GL27433@zn.tnic> (raw)
In-Reply-To: <20210119121505.GA111354@shbuild999.sh.intel.com>
On Tue, Jan 19, 2021 at 08:15:05PM +0800, Feng Tang wrote:
> On Tue, Jan 19, 2021 at 11:02:55AM +0100, Borislav Petkov wrote:
> > On Mon, Jan 18, 2021 at 08:27:21PM -0800, Paul E. McKenney wrote:
> > > I bet that the results vary depending on the type of CPU, and also on
> > > the kernel address-space layout, which of course also varies based on
> > > the Kconfig options. Let's see how the maintainers would like to proceed.
> >
> > So I ran the "reproduce" script in the original mail on a KBL box here
> > with the .config tailored for it:
> >
> > cpu family : 6
> > model : 158
> > model name : Intel(R) Core(TM) i5-9600K CPU @ 3.70GHz
> > stepping : 12
> > microcode : 0xd6
>
> I will also try to find a similar KBL in 0day to run the job. This
> -4.5% comes from a CascadeLake AP which is 4 nodes, 96C/192T.
>
> > and I get mixed results. But I'd need to know how exactly they generate
> > the metrics "netperf.Throughput_total_tps" and "netperf.Throughput_tps"
> >
> > Feng?
>
> I have to admit I'm just a dumb user of 0day :) I'll leave this question
> to Philip/Oliver/Rong who are from 0day team.
>
> I assumed you've cloned the lkp-tests.git, and seems one Ruby file
> https://github.com/intel/lkp-tests/blob/master/stats/netperf is used to
> process the output of the netperf.
$ ../lkp-tests/stats/netperf < rc2.log
Throughput_tps: 12759.701875000002
Throughput_total_tps: 204155.23000000004
workload: 61246569.000000015
$ ../lkp-tests/stats/netperf < with-holdout.log
Throughput_tps: 12863.416875
Throughput_total_tps: 205814.67
workload: 61744401.00000001
So this definitely depends on the .config because in my case, *with* the
holdout patch it is better vs plain 5.11-rc2.
Thx.
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette
next prev parent reply other threads:[~2021-01-19 13:30 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-12 14:21 [x86/mce] 7bb39313cd: netperf.Throughput_tps -4.5% regression kernel test robot
2021-01-12 14:14 ` Borislav Petkov
[not found] ` <20210116035251.GB29609@shbuild999.sh.intel.com>
2021-01-16 15:34 ` Paul E. McKenney
2021-01-16 16:09 ` Feng Tang
2021-01-19 4:27 ` Paul E. McKenney
2021-01-19 10:02 ` Borislav Petkov
2021-01-19 12:15 ` Feng Tang
2021-01-19 13:17 ` Borislav Petkov [this message]
2021-01-19 15:09 ` Feng Tang
2021-01-19 15:33 ` Borislav Petkov
2021-01-20 5:48 ` Feng Tang
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