From: Giovanni Gherdovich <ggherdovich@suse.cz>
To: Borislav Petkov <bp@alien8.de>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
Len Brown <lenb@kernel.org>,
"Rafael J . Wysocki" <rjw@rjwysocki.net>
Cc: Nathan Fontenot <Nathan.Fontenot@amd.com>,
x86@kernel.org, linux-pm@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org
Subject: Re: [PATCH v4 RESEND] x86, sched: Use midpoint of max_boost and max_P for frequency invariance on AMD EPYC
Date: Fri, 04 Dec 2020 18:10:12 +0100 [thread overview]
Message-ID: <1607101812.24959.157.camel@suse.cz> (raw)
In-Reply-To: <20201204170326.4178-1-ggherdovich@suse.cz>
On Fri, 2020-12-04 at 18:03 +0100, Giovanni Gherdovich wrote:
> Frequency invariant accounting calculations need the ratio
> freq_curr/freq_max, but freq_max is unknown as it depends on dynamic power
> allocation between cores: AMD EPYC CPUs implement "Core Performance Boost".
> Three candidates are considered to estimate this value:
> [...]
>
> Benchmarks are described in the next section.
> Tilde (~) means the value is the same as baseline.
>
> - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> ondemand perfgov sugov-noinv sugov-max sugov-mid sugov-P0 better if
> - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> [...]
Hello,
this patch is currently merged in the tip tree, branch sched/core as
commit 46609527577d1def0af29ca5b56cffeeea771ada.
Unfortunately in the original commit message I used "----------" for
making table headers, and git dropped all the commit message after
that sign, i.e. the benchmark results and my signed-off-by.
In this "resend" I replaced the offending sign and the new commit
message should make it intact to the destination tree.
Thanks,
Giovanni
next prev parent reply other threads:[~2020-12-04 17:11 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-12 18:26 [PATCH v4 0/3] Add support for frequency invariance to AMD EPYC Zen2 Giovanni Gherdovich
2020-11-12 18:26 ` [PATCH v4 1/3] x86, sched: Calculate frequency invariance for AMD systems Giovanni Gherdovich
2020-11-12 18:26 ` [PATCH v4 2/3] x86, sched: Use midpoint of max_boost and max_P for frequency invariance on AMD EPYC Giovanni Gherdovich
2020-12-04 17:03 ` [PATCH v4 RESEND] " Giovanni Gherdovich
2020-12-04 17:10 ` Giovanni Gherdovich [this message]
2020-11-12 18:26 ` [PATCH v4 3/3] x86: Print ratio freq_max/freq_base used in frequency invariance calculations Giovanni Gherdovich
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