Status: New
Owner: ----
New issue 1388 by [email protected]: Chrome v13 JS Performance, Array
Performance
http://code.google.com/p/v8/issues/detail?id=1388
Chrome Version : 13.0.761.0
OS Version: 6.1 (Windows 7, Windows Server 2008 R2)
URLs (if applicable) : http://goo.gl/648IU
Other browsers tested:
Add OK or FAIL after other browsers where you have tested this issue:
Chrome 11: OK
Chrome 12: OK
Chrome 13: SLOW
In Chrome 11 and 12 my HTML5 NES emulator was able to achieve an amazing
100 - 120 fps, but in chrome 13 dev and canary it runs at 47 fps. You can
test a special 'un-throttled' version of the emulator here:
http://goo.gl/648IU. Click on Contra / Super Mario 3 to start it up.
You can also see more details about the issue at my Google Code page,
including some code snippets and screenshots:
http://code.google.com/p/gwt-nes-port/wiki/PerformanceIssues
I have a feeling the issue has something to do with array performance. As
noted in the above link, when I comment out the lines of code that set
array values, I get a decent chunk (about half) of my performance back.
Note: I originally created this as a Chromium issue, however, they
suggested I also create an issue with the v8 team. See
http://code.google.com/p/chromium/issues/detail?id=82493
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