To clarify, when the original problem was discovered in cosmic the CPU usage was around 80%, and the fix made it less than 50% [1].
But now even without the fix (although in bionic, still using the same hardware), CPU usage for the same test case is around 50%. So indeed the main issue seems to be gone. What I can't figure out is why the problem isn't reproducible in bionic even when the root cause was introduced in bionic version 1.52.1-1ubuntu1. The bug and the effect of the fix was much more obvious in cosmic and disco... Still, gjs version 1.52.5-0ubuntu18.04.1 eliminates even the theoretical possibility of the CPU problem and it allows us to drop all patches \o/ [1] https://gitlab.gnome.org/GNOME/gjs/merge_requests/236 -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gjs in Ubuntu. https://bugs.launchpad.net/bugs/1803271 Title: [regression] Much higher CPU during some gnome-shell operations Status in gjs package in Ubuntu: Fix Released Status in gjs source package in Bionic: Fix Committed Status in gjs source package in Cosmic: Fix Released Bug description: [Impact] Since fixing bug 1672297 in release 18.04 we experience much higher (almost double) CPU usage during gnome-shell JavaScript operations, such as the icon spring animation [1]. Even just moving the mouse is a little more expensive now [2]. [1] https://gitlab.gnome.org/GNOME/gnome-shell/issues/349 [2] https://gitlab.gnome.org/GNOME/mutter/issues/283 [Test Case] Use 'top' to measure the CPU usage of the gnome-shell process while tapping Super+A repeatedly. It should be much lower with the fix than without. [Regression Potential] Low. This particular fix is tiny (https://gitlab.gnome.org/GNOME/gjs/merge_requests/236) and has been released and used in a couple of upstream gjs versions already without issue. [Other Info] The fix is already released to 19.04 as part of gjs version 1.54.2-1. And already released to 18.10 as part of gjs version 1.54.3-1~ubuntu18.10.1. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gjs/+bug/1803271/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
