[Webkit-unassigned] [Bug 20697] New: REGRESSION(r36130-r36247): nsieve sunspider test slower

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=20697

           Summary: REGRESSION(r36130-r36247): nsieve sunspider test slower
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Macintosh
               URL: http://www2.webkit.org/perf/sunspider-0.9/sunspider-
                    driver.html
        OS/Version: Mac OS X 10.5
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P1
         Component: JavaScriptCore
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: sherlock at genome.stanford.edu


Comparing r36130 and r36247 on Sunspider shows that the nsieve test has
regressed by 1.15x (though overall, I see a 1.47x gain, presumably due to the
squirrelfish-extreme branch merge, which is fabulous!).  Complete Sunspider
results pasted below:

TEST                   COMPARISON            FROM                 TO           
 DETAILS

=============================================================================

** TOTAL **:           1.47x as fast     1498.0ms +/- 0.3%   1022.2ms +/- 0.5% 
   significant

=============================================================================

  3d:                  1.36x as fast      216.4ms +/- 3.5%    159.2ms +/- 5.8% 
   significant
    cube:              1.51x as fast       75.8ms +/- 11.2%     50.2ms +/-
15.0%     significant
    morph:             1.36x as fast       76.2ms +/- 1.8%     56.2ms +/- 1.0% 
   significant
    raytrace:          1.22x as fast       64.4ms +/- 1.1%     52.8ms +/- 5.4% 
   significant

  access:              1.57x as fast      197.6ms +/- 1.7%    125.8ms +/- 2.9% 
   significant
    binary-trees:      1.39x as fast       40.0ms +/- 3.8%     28.8ms +/- 4.7% 
   significant
    fannkuch:          2.49x as fast       44.8ms +/- 1.2%     18.0ms +/- 0.0% 
   significant
    nbody:             1.64x as fast       94.2ms +/- 1.7%     57.6ms +/- 1.9% 
   significant
    nsieve:            *1.15x as slow*     18.6ms +/- 3.7%     21.4ms +/- 13.4%
    significant

  bitops:              1.95x as fast      117.8ms +/- 1.9%     60.4ms +/- 2.3% 
   significant
    3bit-bits-in-byte: 2.27x as fast       20.4ms +/- 3.3%      9.0ms +/- 0.0% 
   significant
    bits-in-byte:      1.96x as fast       22.4ms +/- 3.0%     11.4ms +/- 6.0% 
   significant
    bitwise-and:       1.44x as fast       34.0ms +/- 2.6%     23.6ms +/- 2.9% 
   significant
    nsieve-bits:       2.50x as fast       41.0ms +/- 2.1%     16.4ms +/- 4.2% 
   significant

  controlflow:         1.13x as fast       15.8ms +/- 3.5%     14.0ms +/- 0.0% 
   significant
    recursive:         1.13x as fast       15.8ms +/- 3.5%     14.0ms +/- 0.0% 
   significant

  crypto:              1.51x as fast       82.8ms +/- 0.7%     55.0ms +/- 1.6% 
   significant
    aes:               1.82x as fast       25.8ms +/- 2.2%     14.2ms +/- 3.9% 
   significant
    md5:               1.39x as fast       28.6ms +/- 2.4%     20.6ms +/- 3.3% 
   significant
    sha1:              1.41x as fast       28.4ms +/- 2.4%     20.2ms +/- 2.8% 
   significant

  date:                1.08x as fast      148.6ms +/- 1.5%    138.2ms +/- 0.8% 
   significant
    format-tofte:      1.02x as fast       94.0ms +/- 1.3%     92.6ms +/- 0.7% 
   significant
    format-xparb:      1.20x as fast       54.6ms +/- 3.5%     45.6ms +/- 1.5% 
   significant

  math:                1.42x as fast      179.0ms +/- 2.6%    126.2ms +/- 1.3% 
   significant
    cordic:            1.52x as fast       55.2ms +/- 3.7%     36.4ms +/- 1.9% 
   significant
    partial-sums:      1.38x as fast       90.4ms +/- 2.1%     65.6ms +/- 1.7% 
   significant
    spectral-norm:     1.38x as fast       33.4ms +/- 3.3%     24.2ms +/- 2.3% 
   significant

  regexp:              4.92x as fast      185.8ms +/- 0.7%     37.8ms +/- 1.5% 
   significant
    dna:               4.92x as fast      185.8ms +/- 0.7%     37.8ms +/- 1.5% 
   significant

  string:              1.16x as fast      354.2ms +/- 1.0%    305.6ms +/- 1.5% 
   significant
    base64:            1.27x as fast       29.0ms +/- 0.0%     22.8ms +/- 2.4% 
   significant
    fasta:             1.07x as fast       63.8ms +/- 1.6%     59.6ms +/- 1.1% 
   significant
    tagcloud:          1.12x as fast      102.8ms +/- 0.5%     91.8ms +/- 1.1% 
   significant
    unpack-code:       1.20x as fast       93.6ms +/- 2.0%     78.2ms +/- 2.8% 
   significant
    validate-input:    1.22x as fast       65.0ms +/- 1.9%     53.2ms +/- 3.5% 
   significant


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