Improve refresh queue #438
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Use requestAnimationFrame in addition to a queue to refresh every animation frame but only when a refresh is needed. Fixes xtermjs#280 Fixes xtermjs#290
Tyriar
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This was referenced Dec 31, 2016
This allows the refresh public API to still function
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Yeah the frame updates happen more often, making it feeling snappier (for the price of some more paints). IMHO this can only be improved any further by separating the websocket communication and terminal handling into a separate thread. See #150 (comment) and #150 (comment) for a comparison on my local computer with webworker. The second one with the webworker basically removes the websocket time (grey in the pie) and the terminal status updates (most of the yellow scripting time) from the main thread and adds some smaller scripting time for syncing between the threads. (Well it was based on the old code from July, might not work anymore with the new changes). |
This was referenced Jan 3, 2017
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Use requestAnimationFrame in addition to a queue to refresh every animation
frame but only when a refresh is needed.
Fixes #280
This change results in a slight degredation in performance in terms of raw numbers but improves by being far more responsive by losing minimal frames and not locking up the web page while processing the output.
requestAnimationFramewill only fire once the callback has completed so it will drop frames when necessary.Below tests were running
ls -lR /usr/lib, notice the increased rendering, paint and scripting time on the after timeline.Before:
After: