Thanks Wayne. I think the confusing part in this ticket is that there must have been multiple regressions in terms of CPU over time and I think we are also mixing X and Wayland (in case that matters). Certainly I also saw a big slowdown between TB 91 and 102.
In any case, with regards to my specific problem (mouse hover lagging behind in Supernova) I narrowed it down to: ``` 2:47.23 INFO: Narrowed nightly regression window from [2023-01-18, 2023-01-20] (2 days) to [2023-01-18, 2023-01-19] (1 days) (~0 steps left) 2:47.23 INFO: Got as far as we can go bisecting nightlies... 2:47.23 INFO: Last good revision: 76f62fd3a78092592457e19dbc6e59f87c4f084d (2023-01-18) 2:47.23 INFO: First bad revision: ac5c72f2e56036e2088b5aa794891978fcede5aa (2023-01-19) 2:47.23 INFO: Pushlog: https://hg.mozilla.org/comm-central/pushloghtml?fromchange=76f62fd3a78092592457e19dbc6e59f87c4f084d&tochange=ac5c72f2e56036e2088b5aa794891978fcede5aa [...] 2:54.34 INFO: There are no build artifacts for these changesets (they are probably too old). ``` Visually the GUI changed drastically between these two builds (colors, icons, etc.) so I assume this is the massive "ash" code landing you mentioned? -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to thunderbird in Ubuntu. https://bugs.launchpad.net/bugs/1959747 Title: [upstream] Very high CPU and slow responsiveness in Thunderbird 91-102 Status in Mozilla Thunderbird: Confirmed Status in thunderbird package in Ubuntu: Triaged Bug description: Very high CPU and slow responsiveness in Thunderbird 91.5.0 and later. Just moving the mouse cursor over a message list results in 365% CPU for me. I had to set this in the config editor to fix it: gfx.webrender.force-disabled = TRUE Upstream bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1730423 To manage notifications about this bug go to: https://bugs.launchpad.net/thunderbird/+bug/1959747/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
