From: Giovanni Gherdovich <ggherdovich@suse.cz>
To: Borislav Petkov <bp@alien8.de>, Ingo Molnar <mingo@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
"Rafael J . Wysocki" <rjw@rjwysocki.net>,
Viresh Kumar <viresh.kumar@linaro.org>
Cc: Jon Grimm <Jon.Grimm@amd.com>,
Nathan Fontenot <Nathan.Fontenot@amd.com>,
Yazen Ghannam <Yazen.Ghannam@amd.com>,
Thomas Lendacky <Thomas.Lendacky@amd.com>,
Suthikulpanit Suravee <Suravee.Suthikulpanit@amd.com>,
Mel Gorman <mgorman@techsingularity.net>, Pu Wen <puwen@hygon.cn>,
Juri Lelli <juri.lelli@redhat.com>,
Vincent Guittot <vincent.guittot@linaro.org>,
Dietmar Eggemann <dietmar.eggemann@arm.com>,
Michael Larabel <Michael@phoronix.com>,
x86@kernel.org, linux-pm@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org,
Giovanni Gherdovich <ggherdovich@suse.cz>
Subject: [PATCH v2 0/1] AMD EPYC: fix schedutil perf regression (freq-invariance)
Date: Fri, 22 Jan 2021 21:40:37 +0100 [thread overview]
Message-ID: <20210122204038.3238-1-ggherdovich@suse.cz> (raw)
Michael Larabel from Phoronix.com graciously tested v1, see results at:
AMD EPYC 7702 -
https://openbenchmarking.org/result/2101210-PTS-LINUX51178
AMD Ryzen 9 5950X -
https://openbenchmarking.org/result/2101212-HA-RYZEN959566
The reported regression is recovered, and some workloads even report an
improvement over the v5.10 results.
Thanks Michael for the feedback!
v1 at https://lore.kernel.org/lkml/20210121003223.20257-1-ggherdovich@suse.cz/
Changes wrt v1:
- move code around so that it builds for non-x86 architectures too
Giovanni Gherdovich (1):
x86,sched: On AMD EPYC set freq_max = max_boost in schedutil invariant
formula
drivers/cpufreq/acpi-cpufreq.c | 64 +++++++++++++++++++++++++++++++-
drivers/cpufreq/cpufreq.c | 3 ++
include/linux/cpufreq.h | 5 +++
kernel/sched/cpufreq_schedutil.c | 8 +++-
4 files changed, 76 insertions(+), 4 deletions(-)
--
2.26.2
next reply other threads:[~2021-01-22 20:48 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-22 20:40 Giovanni Gherdovich [this message]
2021-01-22 20:40 ` [PATCH v2 1/1] x86,sched: On AMD EPYC set freq_max = max_boost in schedutil invariant formula Giovanni Gherdovich
2021-01-25 10:04 ` Peter Zijlstra
2021-01-26 9:28 ` Giovanni Gherdovich
2021-01-26 10:02 ` Peter Zijlstra
2021-02-02 18:45 ` Rafael J. Wysocki
2021-02-02 19:11 ` Rafael J. Wysocki
2021-02-03 9:56 ` Giovanni Gherdovich
2021-02-02 18:40 ` Rafael J. Wysocki
2021-01-25 10:06 ` Peter Zijlstra
2021-01-26 9:09 ` Giovanni Gherdovich
2021-01-26 9:31 ` Mel Gorman
2021-01-26 10:05 ` Peter Zijlstra
[not found] ` <1611933781.15858.48.camel@suse.cz>
2021-02-02 14:17 ` Giovanni Gherdovich
2021-02-02 18:21 ` Peter Zijlstra
2021-02-02 18:29 ` Rafael J. Wysocki
2021-02-02 19:00 ` Rafael J. Wysocki
2021-02-02 18:59 ` Rafael J. Wysocki
2021-02-02 19:26 ` Rafael J. Wysocki
2021-02-03 8:39 ` Giovanni Gherdovich
2021-02-03 13:40 ` Rafael J. Wysocki
2021-02-03 9:12 ` Giovanni Gherdovich
2021-02-03 6:04 ` Viresh Kumar
2021-01-24 22:30 ` [PATCH v2 0/1] AMD EPYC: fix schedutil perf regression (freq-invariance) Michael Larabel
2021-01-25 8:34 ` Peter Zijlstra
2021-01-26 9:01 ` Giovanni Gherdovich
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