[pypy-dev] speed.pypy.org changes

Maciej Fijalkowski fijall at gmail.com
Tue Apr 20 20:41:19 CEST 2010

Hi Carl, Hi Miquel.

Cool job!

On Tue, Apr 20, 2010 at 12:29 PM, Carl Friedrich Bolz <cfbolz at gmx.de> wrote:
> Hi Miquel,
> On 04/20/2010 07:14 PM, Miquel Torres wrote:
>> Changes you may notice are geared towards easing the identification of
>> the cause of performance changes:
>> - Std deviation was added to the DB, overview table and timeline
>> tooltips. This way we can rule out fluctuations in the measuring as a
>> cause for a big change. It has to be pointed out though, that this is
>> only as useful as the way the std dev is being computed. (there you go,
>> Carl Friedrich ;-)
> Yay, that's incredibly cool! Let's hope that eventually the graph
> library supports errors too, so we can add them graphically. Anyway, I
> already found some fun things about the benchmarks, so thanks a lot!
> (e.g. the std dev of chaos is very large, which is not really a good thing)

Of course it's large, because as mentioned above the way we compute it
doesn't make sense. We have an average over consecutive runs which
include warmup (less and less so over the course).


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