Unity is slow and pausing occasionally (when its DrawList size spikes, to almost 6000!)

[Daniel van Vugt]

[Test Case]
Performance fix - only way of testing is performing the benchmarking steps again to check if there is improvement.

[Regression Potential]
Redraw/refresh problems.

Original description:

I'm finding my development Unity sometimes pauses (stops responding for a little while). When this happens I notice its DrawList has spiked to several thousand.

[Launchpad Janitor (janitor)]

This bug was fixed in the package nux - 3.0.0-0ubuntu1

---------------
nux (3.0.0-0ubuntu1) quantal-proposed; urgency=low

  [ Łukasz 'sil2100' Zemczak ]
  * New upstream release.
    - Conditional jump or move depends on uninitialised value(s)
      nux::GraphicsDisplay::ProcessXEvent(_XEvent, bool) (LP: #983321)
    - Coverity PW.PARAMETER_HIDDEN - CID 10653 (LP: #937588)
    - Coverity SECURE_CODING - CID 10659 (LP: #937564)
    - Coverity PW.PARAMETER_HIDDEN - CID 10651 (LP: #937576)
    - Coverity PW.PARAMETER_HIDDEN - CID 10652 (LP: #937586)
    - QueueDraw is very expensive (LP: #994884)
    - Unity is slow and pausing occasionally (when its DrawList size spikes,
      to almost 6000!) (LP: #1014610)
    - IBus hotkey using Release modifier doesn't work in unity (LP: #1016665)
    - Nothing should be written into the dash/hud searchbar when holding super,
      ctrl or Alt (LP: #1013751)
    - IBus can't be activated on dash or HUD since r2428 (LP: #1016354)
  * debian/control, debian/libnux-3.0-0.install,
    debian/libnux-3.0-common.install, debian/libnux-3.0-dev.install:
    - switch to nux-3.0
 -- Didier Roche <email address hidden> Tue, 10 Jul 2012 08:53:00 +0200

[Daniel van Vugt (vanvugt)]

Fix committed to lp:nux/2.0 at revision 616.

[Brian Murray (brian-murray)]

Hello Daniel, or anyone else affected,

Accepted nux into precise-proposed. The package will build now and be available at http://launchpad.net/ubuntu/+source/nux/2.14.0-0ubuntu1 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please change the bug tag from verification-needed to verification-done. If it does not, change the tag to verification-failed. In either case, details of your testing will help us make a better decision.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance!

[Daniel van Vugt (vanvugt)]

This fix can not be verified except with the new Unity code coming in 5.16:
https://code.launchpad.net/~thumper/unity/regional-damage-sru/+merge/116796

Only that code exploits this bug.

[Łukasz Zemczak (sil2100)]

Ok, then, for now, we can set this to verification-done and then reopen it/leave it closed once the new unity version with regional damage (?) is out.

[Adam Conrad (adconrad)]

The verification of this Stable Release Update has completed successfully and the package has now been released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regresssions.

[Launchpad Janitor (janitor)]

This bug was fixed in the package nux - 2.14.0-0ubuntu1

---------------
nux (2.14.0-0ubuntu1) precise-proposed; urgency=low

  * New upstream release.
    - QueueDraw is very expensive (LP: #994884)
    - Unity is slow and pausing occasionally (when its DrawList size spikes,
      to almost 6000!) (LP: #1014610)
    - Conditional jump or move depends on uninitialised value(s)
      nux::GraphicsDisplay::ProcessXEvent(_XEvent, bool)
      (GraphicsDisplayX11.cpp:1702) (LP: #983321)
    - Performance fixes for GdkPixbuf conversions and QueueDraw calls (SRU)
      (LP: #1028020)
 -- Lukasz 'sil2100' Zemczak <email address hidden> Thu, 26 Jul 2012 19:02:11 +0200