Ubuntu
update-manager package

  1. Bug #1691716
  2. Comment #3

Comment 3 for bug 1691716

Revision history for this message
Brain (brain) wrote :

I can confirm exactly the same issue.

The Ubuntu Software Updater exhibits constant high CPU usage when the final pop-up "The software on this computer is up to date. [ OK ]" is shown after the updates have been performed.

Output of top:

  PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
 1496 root 20 0 894152 337872 298496 S 13.3 2.1 5:15.88 Xorg
 2462 brain 20 0 1577620 153740 71320 S 13.3 1.0 7:51.93 compiz
13959 brain 30 10 814320 210292 135388 S 13.3 1.3 1:44.40 update-manager

There is no reason for high CPU usage just to show a pop-up notification with an OK button, waiting for user confirmation. It should not need any CPU in an event driven system.

The high CPU usage disappears after clicking the OK button.

This is particularly a problem when running on battery. The pop-up dialog usually ends up below other windows and the user doesn't notice it. In the meantime it is heavily draining the battery.