It is currently 200ms which seems to be too frequent. Make it once per a second.
Created attachment 154624 [details] Patch
Comment on attachment 154624 [details] Patch What's the motivation for this change? Is the current rate too high?
It's subjective. I think 200 ms is too high. If 1 sec is too low for you, let's close the deal at 500ms ;-)
Comment on attachment 154624 [details] Patch Clearing flags on attachment: 154624 Committed r123758: <http://trac.webkit.org/changeset/123758>
All reviewed patches have been landed. Closing bug.