From kde-bugs-dist Mon Dec 23 16:06:28 2013 From: Gunther Piez Date: Mon, 23 Dec 2013 16:06:28 +0000 To: kde-bugs-dist Subject: [kwin] [Bug 322060] Synced swapping on double buffered nvidia GPUs cause high CPU load Message-Id: X-MARC-Message: https://marc.info/?l=kde-bugs-dist&m=138781479928764 https://bugs.kde.org/show_bug.cgi?id=322060 --- Comment #75 from Gunther Piez --- (In reply to comment #74) > It's been four days now and I wasn't able to reproduce this again even once > :-/ Although I did now upgrade to KDE 4.12.0, kwin is still at 4.11.4 (and > AFAIK, there will be no 4.12 release of kwin). Unless the update did change > something that would result in the bug not triggering anymore. I have seen this performance drop once - after a few hours of gaming in WoW. ctrl+alt+f1 and back to X fixed it eventually - it may be possibly a nvidia driver bug. > > Anyway, on a related matter: since I upgraded my GPU to a GTX 780, > performance has increased immensely. I would expect that ^^ > So the question is: is/will kwin be able to cope with this? Linux as a > gaming platform is becoming more important as of late. I do not believe that generic linux distros will be of any importace for the gaming software industry ever - but anyway, here is my "bugfix": Disable triple buffering generally and create an executable shell script #!/bin/bash __GL_YIELD=USLEEP /usr/bin/kwin in /usr/local/bin/kwin, and make sure /usr/local/bin is before /usr/bin in your $PATH. So I get all, low cpu usage, 60 fps in desktop effects, and lag-free gaming. -- You are receiving this mail because: You are watching all bug changes.