| 2012-05-22 11:36:37 |
Harald Sitter |
bug |
|
|
added bug |
| 2012-05-22 11:37:04 |
Harald Sitter |
nominated for series |
|
Ubuntu Precise |
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| 2012-05-22 11:37:04 |
Harald Sitter |
bug task added |
|
xsettings-kde (Ubuntu Precise) |
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| 2012-05-22 11:37:36 |
Harald Sitter |
xsettings-kde (Ubuntu): status |
New |
Fix Released |
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| 2012-05-22 11:42:16 |
Harald Sitter |
bug |
|
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added subscriber Ubuntu Stable Release Updates Team |
| 2012-05-22 11:44:11 |
Harald Sitter |
attachment added |
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diff of SRU change https://bugs.launchpad.net/ubuntu/+source/xsettings-kde/+bug/1002811/+attachment/3157698/+files/ubuntu2-to-ubuntu21.diff |
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| 2012-05-24 20:24:32 |
Brian Murray |
xsettings-kde (Ubuntu Precise): status |
New |
Triaged |
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| 2012-05-24 21:11:57 |
Steve Langasek |
description |
In the xevent processing thread there is a conditional sleep() call when the event queue is empty. This is unnecessary as the used XNextEvent function blocks on an empty queue. The sleep call thus causes an unnecessary wake up every 2 seconds preventing CPU sleep and consuming CPU time for no good reason.
This is easily resolved by removing the bogus loop.
Reproduce:
* make sure xsettings-kde is running
* use sudo powertop
* observe that xsettings-kde is having 0.5 events/second (one event every 2 seconds) and causes CPU usage of (on my system) 14us
Fixed:
* in powertop xsettings-kde does not have any events most of the time, using no CPU (or it is not showing up at all) |
In the xevent processing thread there is a conditional sleep() call when the event queue is empty. This is unnecessary as the used XNextEvent function blocks on an empty queue. The sleep call thus causes an unnecessary wake up every 2 seconds preventing CPU sleep and consuming CPU time for no good reason.
This is easily resolved by removing the bogus loop.
[Test Case]
Reproduce:
* make sure xsettings-kde is running
* use sudo powertop
* observe that xsettings-kde is having 0.5 events/second (one event every 2 seconds) and causes CPU usage of (on my system) 14us
Fixed:
* in powertop xsettings-kde does not have any events most of the time, using no CPU (or it is not showing up at all) |
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| 2012-05-25 03:33:42 |
Chris Halse Rogers |
xsettings-kde (Ubuntu Precise): status |
Triaged |
Fix Committed |
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| 2012-05-25 03:33:47 |
Chris Halse Rogers |
bug |
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added subscriber SRU Verification |
| 2012-05-25 03:33:53 |
Chris Halse Rogers |
tags |
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verification-needed |
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| 2012-05-25 03:58:17 |
Launchpad Janitor |
branch linked |
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lp:ubuntu/precise-proposed/xsettings-kde |
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| 2012-05-25 12:37:53 |
Jonathan Thomas |
tags |
verification-needed |
verification-done |
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| 2012-05-25 15:52:57 |
Scott Kitterman |
xsettings-kde (Ubuntu Precise): assignee |
|
Michał Zając (quintasan) |
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| 2012-06-01 12:12:09 |
Launchpad Janitor |
xsettings-kde (Ubuntu Precise): status |
Fix Committed |
Fix Released |
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