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Re: [PATCH 5/5] Add a little script to compare two make perf runs

From
Bert Wesarg <bert.wesarg@googlemail.com>
Date
Jul 6, 2014, 16:46 UTC
Message-ID
<CAKPyHN37FtG9=1zoMM3FxDzn1eSjbH7WGX8FOfkPLk8HJ5Scxg@mail.gmail.com>
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:
Show 5 quoted lines
>> 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
Previous: Andi Kleen
Message 11 of 11 in “Fix the bitrotted profile feedback build”
  1. Andi KleenJul 4, 2014
  2. 1/5 Use BASIC_FLAGS for profile feedbackAndi Kleen, Jul 4, 2014
  3. 2/5 Don't define away __attribute__ on gccAndi Kleen, Jul 4, 2014
  4. 3/5 Run the perf test suite for profile feedback tooAndi Kleen, Jul 4, 2014
  5. Junio C HamanoJul 7, 2014
  6. Andi KleenJul 7, 2014
  7. 4/5 Fix profile feedback with -jN and add profile-fastAndi Kleen, Jul 4, 2014
  8. 5/5 Add a little script to compare two make perf runsAndi Kleen, Jul 4, 2014
  9. Bert WesargJul 6, 2014
  10. Andi KleenJul 6, 2014
  11. Bert WesargJul 6, 2014

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