[Webkit-unassigned] [Bug 51262] WebPageProxy should delete its backing store after not painting for a while

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=51262





--- Comment #9 from Geoffrey Garen <ggaren at apple.com>  2011-02-10 14:11:11 PST ---
Straw-person proposal:

1. Begin with a timer interval of 5s.
2. After throwing away a backing store, record the time interval required for the next paint.
3. Update the timer interval to 100 * the recorded time interval in 2.

For fast-painting sites, this will throw backing stores away quickly. For slow-painting sites, this will approximate a maximum thrash cost of 1%.

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