Scrolling the app grid incurs very high CPU usage

Bug #1761374 reported by Daniel van Vugt
8
This bug affects 1 person
Affects Status Importance Assigned to Milestone
GNOME Shell
Fix Released
Unknown
gnome-shell (Ubuntu)
Fix Released
Undecided
Unassigned

Bug Description

https://gitlab.gnome.org/GNOME/gnome-shell/issues/174

Scrolling the app grid incurs very high CPU usage. On an i7-7700 desktop it uses 47% CPU (compared to 17% to display a maximized glxgears).

I imagine most machines can't scroll the app grid smoothly. It doesn't appear smooth on this machine so I would look at the CPU usage problem first.

Revision history for this message
Daniel van Vugt (vanvugt) wrote :
tags: added: performance
description: updated
Revision history for this message
Launchpad Janitor (janitor) wrote :

Status changed to 'Confirmed' because the bug affects multiple users.

Changed in gnome-shell (Ubuntu):
status: New → Confirmed
Changed in gnome-shell:
status: Unknown → New
Revision history for this message
Daniel van Vugt (vanvugt) wrote (last edit ):

With triple buffering: The stutter was fixed in mutter 42 for Ubuntu.

Without triple buffering: The root cause of the high GPU usage is fixed in gnome-shell 43.

tags: added: fixed-in-43 fixed-upstream
Changed in gnome-shell (Ubuntu):
status: Confirmed → Fix Committed
tags: added: fixed-in-43.beta
removed: fixed-in-43
Changed in gnome-shell (Ubuntu):
status: Fix Committed → Fix Released
Changed in gnome-shell:
status: New → Fix Released
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