Closed Bug 626240 Opened 9 years ago Closed 9 years ago
Switching tabs results in blocking Tab
I recently profiled what Panorama is doing when switching tabs. This is what chromebug told me: 1.) When switching a tab in the main browser window (via click or something) panorama spends about 340ms in TabCanvas.paint(). I think there's really no need to block the whole browser to update a canvas in the background. When disabling this it really felt a bit snappier to change tabs than in my concurrently opened nightly. 2.) When panorama is opened and one clicks on a tab (other than the currently selected) to open it the same thing happens. TabCanvas.paint() is called for the selected tab and blocks the browser (and the zoom?) for about 340ms. I guess this could be already fixed in bug 604215? FYI, I verified with chromebug breakpoints that these updates are not called via the heartbeat (and so that they block UI).
I believe both of these occurrences have been fixed by bug 609685 (which removes the immediate paint call for the current tab). Can you verify and close if appropriate?
Status: NEW → RESOLVED
Closed: 9 years ago
Resolution: --- → FIXED
verified per comment #2
Status: RESOLVED → VERIFIED
Product: Firefox → Firefox Graveyard
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