fishie-fast runs much slower under tracing with an odd window size.

NEW
Unassigned

Status

()

Core
JavaScript Engine
6 years ago
3 years ago

People

(Reporter: jrmuizel, Unassigned)

Tracking

Firefox Tracking Flags

(Not tracked)

Details

(Reporter)

Description

6 years ago
Using an odd window size with http://people.mozilla.org/~jmuizelaar/fishie/fishie-fast.html can make the difference between 3fps and 30fps. To reproduce this I need to turn the method jit (bug 637878).

I assume that this has to do with having a division of the width or height producing a double instead of an int.
data:text/html,<iframe src="http://people.mozilla.org/~jmuizelaar/fishie/fishie-fast.html" width="701" height="700"></iframe>

data:text/html,<iframe src="http://people.mozilla.org/~jmuizelaar/fishie/fishie-fast.html" width="700" height="700"></iframe>

I get about the same behavior with both of those (after turning off methodjit).

Jeff, do you see them running at wildly different speeds?
Blocks: 638321
(Assignee)

Updated

3 years ago
Assignee: general → nobody
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