speedscope icon indicating copy to clipboard operation
speedscope copied to clipboard

Published 20 hours ago • verified publisher icon jlfwong

Low framerate in Chrome 66 on MBP

Open jlfwong opened this issue 6 years ago • 2 comments

For some reason, the example profile is running really slowly, but only in Chrome. It seems like most of the time is going into compositing layers

image

image

It seems to run just fine in Firefox

jlfwong avatar May 17 '18 16:05 jlfwong

This seems like it's related to a regression in Chrome itself: https://groups.google.com/a/chromium.org/forum/#!topic/chromium-discuss/3Yn_fy985Mc

As one potential workaround, I could reimplement all of the immediate mode logic to use WebGL instead...

jlfwong avatar May 19 '18 23:05 jlfwong

It also seems like upgrading my OS would resolve this issue. It would be good to warn other users on old versions of OS X if they're running into slowness then it might be due to this issue. See https://bugs.chromium.org/p/chromium/issues/detail?id=822417

jlfwong avatar May 19 '18 23:05 jlfwong