[Webkit-unassigned] [Bug 71801] Benchmark using higher-precision timers

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Wed Nov 9 12:40:12 PST 2011


--- Comment #6 from Filip Pizlo <fpizlo at apple.com>  2011-11-09 12:40:12 PST ---
(In reply to comment #2)
> Compared to before, where these routines measured integral milliseconds, this looks to be a huge lose.  However it is more accurate.
> TEST                   COMPARISON            FROM                 TO             DETAILS
> =============================================================================
> ** TOTAL **:           *1.087x as slow*  162.2ms +/- 1.0%   176.2ms +/- 1.0%     significant

I'd be fine with this patch except for this giant slow-down.  If you want this functionality, you should probably investigate what happened here.

Tools/Scripts/bencher uses our internal preciseTime() function, which returns an untruncated time.  So if you want more precise results, you could just use that.

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