super press/dash display can be really slow

Reported by Didier Roche on 2011-11-23
32
This bug affects 7 people
Affects Status Importance Assigned to Milestone
Unity
Medium
Unassigned
Unity Distro Priority
Medium
Unassigned
unity (Ubuntu)
Medium
Unassigned

Bug Description

On some system, dash/hud/alt-tab activation is really slow to activate (something like more than 5s), even once the lenses are loaded. Then, it seems to be cached quite effenciently, but if you do something else, like for 5 minutes, then, it will get slow to redraw as well. (Multiple reports confirms about that, on not that old hardware)

Didier Roche (didrocks) on 2011-11-23
Changed in unity:
status: New → Triaged
importance: Undecided → Medium
Changed in unity (Ubuntu):
status: New → Triaged
importance: Undecided → Medium
Changed in unity-distro-priority:
status: New → Fix Committed
importance: Undecided → Medium

Right now there is a timer that loads the lenses if not opened first which is 60 seconds, if it was say 10 or 5 then it would get loaded before they opened the dash (hopefully). Though I am unsure how slow it is on a slower machine, this way would require just 1 line of code changed vs. lazy loading or delaying the lens activation.

This is the line of code:
http://bazaar.launchpad.net/~unity-team/unity/trunk/view/head:/plugins/unityshell/src/DashController.cpp#L54

I still see a problem when there starts to be more then 3 lenses being loaded.

Tim Penhey (thumper) on 2012-02-20
tags: added: distro-priority
Didier Roche (didrocks) on 2012-02-20
description: updated
summary: - first super press/dash display can be really slow
+ super press/dash display can be really slow
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