Ubuntu
unity8 package

[QtComp] Many apps open results in laggy launcher, apps scope, spread

Bug #1340632 reported by Jonas G. Drange
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
unity8 (Ubuntu)
Fix Released
Undecided
Michael Zanetti

Bug Description

What happened:
I opened 9 apps, causing the launcher to be scrollable. Scrolling the launcher is slow and jumpy

What should have happened:
Luncher scrolling should be smoooth

ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: unity8 8.00+14.10.20140710.1-0ubuntu1 [origin: LP-PPA-ci-train-ppa-service-landing-006]
Uname: Linux 3.4.0-5-mako armv7l
ApportVersion: 2.14.4-0ubuntu2
Architecture: armhf
Date: Fri Jul 11 09:29:14 2014
InstallationDate: Installed on 2014-07-11 (0 days ago)
InstallationMedia: Ubuntu Utopic Unicorn (development branch) - armhf (20140711-020204)
SourcePackage: unity8
UpgradeStatus: No upgrade log present (probably fresh install)

Revision history for this message
Jonas G. Drange (jonas-drange) wrote :
Revision history for this message
Michael Zanetti (mzanetti) wrote :

Is this only affecting the launcher? I tried to reproduce this now, and while I do see a little decrease of performance when 9 apps are opened (its not terribly slow, just a bit jumpy), the launcher doesn't behave any worse than the rest of the ui.

Can you confirm this is a Launcher-only issue? if yes, can you add more detailed steps to repriduce? which apps are open, which one is in foreground?

Changed in unity8 (Ubuntu):
status: New → Incomplete
assignee: nobody → Michael Zanetti (mzanetti)
Revision history for this message
kevin gunn (kgunn72) wrote :

@mzanetti its not just the launcher, if you're viewing the Apps scope, and have loads of running apps screen shots there it is quite a bit slower compared to the virgin image. Also, the spread itself is quite a bit slower in comparison as well as more app screen shots are added - I'm wondering if this is due to updating the previews?

Revision history for this message
Michael Zanetti (mzanetti) wrote :

@kgunn, yep, my observations too. Nothing to do with the launcher. So we don't have screenshots in the spread any more. Its the real apps. Still, the apps are frozen so they shouldn't update the surfaces in the spread anyways. I rather think its the rendering engine, given that not only the spread is slower, but also other things, like the dash and the launcher.

Anyways, I guess we can close this as duplicate of bug #1337904 then.

kevin gunn (kgunn72)
summary: - [QtComp] vertical scroll in launcher is laggy
+ [QtComp] Many apps open results in laggy launcher, apps scope, spread
Revision history for this message
Michael Zanetti (mzanetti) wrote :

Ok, changed the spread to make applications invisible when they're either outside the screen on the right, or covered by other apps in spread mode.

Now we're painting at max 2 apps when idle or 6 apps when in full spread mode. Should improve this situation quite a bit.

Revision history for this message
Michael Zanetti (mzanetti) wrote :

After some more tweaking I think we're in a position to close this bug now. It shouldn't be any worse with QtComp than with trunk any more.

Changed in unity8 (Ubuntu):
status: Incomplete → Fix Committed
Changed in unity8:
status: New → Fix Committed
Michael Zanetti (mzanetti)
Changed in unity8:
status: Fix Committed → Fix Released
Changed in unity8 (Ubuntu):
status: Fix Committed → Fix Released
Michał Sawicz (saviq)
no longer affects: unity8
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