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Re: Lies, Damn Lies and Benchmarks

by graff (Chancellor)
on Mar 22, 2004 at 02:49 UTC ( #338544=note: print w/replies, xml ) Need Help??


in reply to Lies, Damn Lies and Benchmarks

This just goes to show that you should always check, doublecheck and triplecheck your benchmarks.

Or, perhaps it means that people should limit their use of Benchmark::cmpthese()... they should only compare alternatives that actually have some specific relevance in the context of a given application.

I think you've shown that by trying to isolate a couple of syntactic variants -- stripping away all "confounding factors" -- in order to benchmark their "intrinsic" speed, you end up testing some obscure aspect of the perl interpreter whose impact becomes irrelevant once you put those test cases back into the real world.

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[erix]: well, dutch royals are germans, really
[choroba]: Utrecht? Is that where we made the trip, LanX?
[erix]: we should really dupm the lot, but I got no say in the matter :)
[LanX]: yeah its a religious mafia , the only two big calvinist houses are dutch and prussian. ..
[LanX]: choroba yes
[erix]: Utrecht has a beautiful old center, and less mass-tourism than Amsterdam
[erix]: next time, drop by :)
[LanX]: religion is also the reason how the house of Hanover aquire the English throne, all other candidates on succession where catholics...
[erix]: Henry VIII has a lot to answer for :P
[LanX]: erix sure next time you miss a conference nearby we drop by ...

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