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Re: All gone
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From:
Steffen Mueller
Date:
September 16, 2010 06:04
Subject:
Re: All gone
Message ID:
4C9215CF.3060806@cpan.org
David Golden wrote:
> On Thu, Sep 16, 2010 at 6:04 AM, Steffen Mueller <smueller@cpan.org> wrote:
>> Getting back on topic: Even with Reini's benchmark showing a slowdown, it's
>> entirely not clear that overall in actual, real production code, there'd be
>> a slowdown or even an improvement in run-time. Previously, we were shown it
>> was possible to produce micro-benchmarks showing that the change doesn't
>> adversely affect them. Now we have one that shows that there are occasions
>> in which the patch does have a net negative effect. We will have to
>> investigate more to arrive at a reasonable conclusion. Ideally with more
>> realistic code samples.
>
> At the risk of throwing gasoline on a fire, could we start by
> profiling these benchmarks on "fast" and "slow" perls and seeing
> what's actually eating up the time?
The s/// (as intended by Reini, I suspect?).
See
http://steffen-mueller.net/tmp/nytprof-5.13.3/t-pl-1-line.html
and
http://steffen-mueller.net/tmp/nytprof-5.13.4/t-pl-1-line.html
Next step would be a lower level profiler OR someone with better
insight. Not me.
--Steffen
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