[Bug 1773502] Re: High CPU usage in gnome-shell & Xorg when using Firefox
Nevermind, it's obvious you're using Xorg sessions. At what resolution though? Please just run 'xrandr' and send us the output. ** Summary changed: - High CPU usage in gnome-shell & Xorg when using Firefox + High CPU usage in gnome-shell & Xorg when using gnome-system-monitor's Resources tab ** Changed in: gnome-shell (Ubuntu) Importance: Undecided => Medium ** Changed in: gnome-shell (Ubuntu) Status: Incomplete => Triaged -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1773502 Title: High CPU usage in gnome-shell & Xorg when using gnome-system-monitor's Resources tab To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1773502/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1773502] Re: High CPU usage in gnome-shell & Xorg when using Firefox
Oooh... that makes sense now, thanks. The problem you are seeing is with mutter/gnome-shell being inefficient at frequently-updating software rendered windows. This is a known problem, but until now we only knew of Eclipse triggering it (bug 1756508), and the older pre-Quantum versions of Firefox (bug 1696305). What you are seeing is a known performance problem, but you have discovered a great test case for it in the Resources tab. So thanks. As I suspected, this is not a problem with the new Firefox at all (which is hardware rendered). It's a problem with gnome-system-monitor, or any frequently-redrawing software rendered (e.g. Gnome) app. I only have two more questions: What is your display resolution, and are you using Wayland or Xorg? Both of these can be answered by running 'xrandr' and sending us the output. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1773502 Title: High CPU usage in gnome-shell & Xorg when using gnome-system-monitor's Resources tab To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1773502/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1773502] Re: High CPU usage in gnome-shell & Xorg when using Firefox
I restarted my computer 3 time.I launched FF and the top command. The home page of FF is https://www.bing.com/?cc=be. I opened a second tab with maps.google.com. Everything was find. I lauched system monitor and then, the CPU of one core jumped to 100 %, even after closing the maps.google.com tab (see screenshot). When I'm in system monitor, the tab Ressources take 100 % of 1 CPU. If I switch to the tab Processes and change the ordering of the list, it goes down. When I come back to the Ressources tab, it reaches again the top. Same thing if I go from the Ressources view to the File System tab and back to the Resources tab (see screenshot from 11:50 AM). ** Attachment added: "System monitor screen shot" https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1773502/+attachment/5144606/+files/Capture%20d%E2%80%99%C3%A9cran%20de%202018-05-26%2011-50-40.png -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1773502 Title: High CPU usage in gnome-shell & Xorg when using Firefox To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1773502/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
