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Article #480675

Re: robimy benchmark ;)

#480675
From: Piotr B.
Date: Thu, 18 Nov 2010 15:44
23 lines
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Tomasz Chmielewski presented the following explanation :
> http://digitizor.com/2010/11/17/internet-explorer-9-caught-cheating-in-sunspider-benchmark/
>
> While Mozilla engineer Rob Sayre was benchmarking Firefox 4 with different 
> browsers, he noticed something with Internet Explorer 9 – Internet Explorer 9 
> was around 10 times faster than the other browsers in a particular test 
> (math-cordic) in the SunSpider benchmark. While Chrome and Opera scored took 
> around 10ms in that test, Internet Explorer 9 finished it it in about 1ms.
>
> Sayre investigated further by modifying the code for that test used in the 
> SunSpider Benchmark a bit. He made two variations of the test little bits of 
> codes to the original – one by adding a “true” and another by adding a 
> “return”. As these “true” and “return” in this context does not do anything 
> there should be minimal impact.
>
> The result though is startling – Internet Explorer 9 took around 20 times 
> longer with the two new tests compared with the original. While the original 
> took only 1ms in my laptop, the other two took around 20ms each.

Kolejny który nie słyszał o dead code elimination.

-- 
Piotr Borkowski
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From: Piotr B. (pb2004) <p_borkowski@nospamgazeta.pl>
Newsgroups: pl.comp.os.advocacy
Subject: Re: robimy benchmark ;)
Date: Thu, 18 Nov 2010 16:44:15 +0100
Organization: Multimedia Polska SA
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