[Webkit-unassigned] [Bug 28259] [QT] Enable ARM JIT and YARR by default

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=28259





--- Comment #6 from Gabor Loki <loki at inf.u-szeged.hu>  2009-08-14 01:18:31 PDT ---
I did a fast measurement to get the max RSS during a SunSpider run. The
sampling rate was one per second. This method is not an exact one, but it can
help to get an overview about memory consumption. We are going to measure the
RSS on a precise way as well, but this takes time.

Here comes the relative comparisons (max RSS):
* Interpreter => JIT + YARR_JIT:   1.077x bigger RSS
* Interpreter => YARR_JIT:         1.003x smaller RSS
* Interpreter => JIT without YARR: 1.088x bigger RSS

The absolute numbers are:
* Interpreter:      2540 pages
* JIT:              2735 pages
* YARR_JIT:         2533 pages
* JIT without YARR: 2764 pages

So the JIT consumes 7-8% extra memory (195-224 pages).

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