From: Bert Wesarg <bert.wesarg@googlemail.com>
To: Andi Kleen <ak@linux.intel.com>
Cc: Andi Kleen <andi@firstfloor.org>, Git Mailing List <git@vger.kernel.org>
Subject: Re: [PATCH 5/5] Add a little script to compare two make perf runs
Date: Sun, 6 Jul 2014 18:46:34 +0200 [thread overview]
Message-ID: <CAKPyHN37FtG9=1zoMM3FxDzn1eSjbH7WGX8FOfkPLk8HJ5Scxg@mail.gmail.com> (raw)
In-Reply-To: <20140706161527.GU19781@tassilo.jf.intel.com>
On Sun, Jul 6, 2014 at 6:15 PM, Andi Kleen <ak@linux.intel.com> wrote:
>> a justification why the geometric mean is used here would increase my
>> confident significantly.
>
> It's just a standard way to summarize sets of benchmarks. For example SPEC
> uses the same approach.
No, SPEC would have calculated the geometric mean of the ratios
cmp[1][j] / cmp[0][j]. And this should also only be used under the
assumption that there is a multiplicative correlation.
Bert
prev parent reply other threads:[~2014-07-06 16:46 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-04 23:43 Fix the bitrotted profile feedback build Andi Kleen
2014-07-04 23:43 ` [PATCH 1/5] Use BASIC_FLAGS for profile feedback Andi Kleen
2014-07-04 23:43 ` [PATCH 2/5] Don't define away __attribute__ on gcc Andi Kleen
2014-07-04 23:43 ` [PATCH 3/5] Run the perf test suite for profile feedback too Andi Kleen
2014-07-07 21:06 ` Junio C Hamano
2014-07-07 22:15 ` Andi Kleen
2014-07-04 23:43 ` [PATCH 4/5] Fix profile feedback with -jN and add profile-fast Andi Kleen
2014-07-04 23:43 ` [PATCH 5/5] Add a little script to compare two make perf runs Andi Kleen
2014-07-06 16:12 ` Bert Wesarg
2014-07-06 16:15 ` Andi Kleen
2014-07-06 16:46 ` Bert Wesarg [this message]
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