[Webkit-unassigned] [Bug 25668] lots of sunspider performance regressions from r41844 to r43444 on PPC G4

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=25668





------- Comment #3 from sherlock at genome.stanford.edu  2009-05-10 12:07 PDT -------
I also see some slow downs on Intel with 10.5.6.  Compare:

http://www2.webkit.org/perf/sunspider-0.9/sunspider-results.html?%7B%223d-cube%22:%5B72,71,71,72,71%5D,%223d-morph%22:%5B57,53,54,54,53%5D,%223d-raytrace%22:%5B36,38,38,40,38%5D,%22access-binary-trees%22:%5B6,6,6,6,6%5D,%22access-fannkuch%22:%5B13,13,13,13,14%5D,%22access-nbody%22:%5B52,52,52,53,53%5D,%22access-nsieve%22:%5B7,7,7,7,8%5D,%22bitops-3bit-bits-in-byte%22:%5B4,3,3,3,3%5D,%22bitops-bits-in-byte%22:%5B6,6,7,7,6%5D,%22bitops-bitwise-and%22:%5B3,2,3,2,3%5D,%22bitops-nsieve-bits%22:%5B22,21,23,23,22%5D,%22controlflow-recursive%22:%5B3,4,4,4,4%5D,%22crypto-aes%22:%5B15,14,15,14,14%5D,%22crypto-md5%22:%5B21,21,22,21,20%5D,%22crypto-sha1%22:%5B19,19,20,19,19%5D,%22date-format-tofte%22:%5B31,32,31,31,32%5D,%22date-format-xparb%22:%5B37,37,39,38,38%5D,%22math-cordic%22:%5B45,46,47,46,45%5D,%22math-partial-sums%22:%5B46,45,46,45,46%5D,%22math-spectral-norm%22:%5B21,22,22,21,21%5D,%22regexp-dna%22:%5B31,32,32,32,32%5D,%22string-base64%22:%5B23,21,22,21,24%5D,%22string-fasta%2
 2:%5B36,36,36,41,38%5D,%22string-tagcloud%22:%5B41,43,40,44,42%5D,%22string-unpack-code%22:%5B58,61,58,57,59%5D,%22string-validate-input%22:%5B43,42,41,43,45%5D%7D

to:

http://www2.webkit.org/perf/sunspider-0.9/sunspider-results.html?%7B%223d-cube%22:%5B53,55,55,54,53%5D,%223d-morph%22:%5B53,52,52,53,53%5D,%223d-raytrace%22:%5B35,34,33,33,33%5D,%22access-binary-trees%22:%5B10,10,10,10,10%5D,%22access-fannkuch%22:%5B13,13,14,14,14%5D,%22access-nbody%22:%5B38,39,37,37,37%5D,%22access-nsieve%22:%5B7,8,10,7,7%5D,%22bitops-3bit-bits-in-byte%22:%5B3,3,4,4,3%5D,%22bitops-bits-in-byte%22:%5B6,6,7,6,7%5D,%22bitops-bitwise-and%22:%5B8,8,8,8,9%5D,%22bitops-nsieve-bits%22:%5B17,17,18,21,17%5D,%22controlflow-recursive%22:%5B5,4,4,4,5%5D,%22crypto-aes%22:%5B14,14,14,14,15%5D,%22crypto-md5%22:%5B17,17,17,18,17%5D,%22crypto-sha1%22:%5B16,17,16,16,16%5D,%22date-format-tofte%22:%5B30,29,29,30,31%5D,%22date-format-xparb%22:%5B45,44,45,45,47%5D,%22math-cordic%22:%5B36,37,36,44,35%5D,%22math-partial-sums%22:%5B49,48,49,49,48%5D,%22math-spectral-norm%22:%5B15,16,16,16,16%5D,%22regexp-dna%22:%5B30,31,30,30,31%5D,%22string-base64%22:%5B20,20,20,21,21%5D,%22string-f
 asta%22:%5B35,35,34,36,36%5D,%22string-tagcloud%22:%5B90,89,88,90,92%5D,%22string-unpack-code%22:%5B57,55,54,59,62%5D,%22string-validate-input%22:%5B51,51,58,54,58%5D%7D

r43444 is faster overall (just), but there are regressions in individual tests.

Some of the tests are now so quick, that there is a lot of variance.  It might
be useful if Sunspider were updated for tests to take a little longer, and be
run 5 times instead of 3.


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