| Summary: | Knotify4 has over 900 wakeups per second | ||
|---|---|---|---|
| Product: | [Frameworks and Libraries] Phonon | Reporter: | Kyle Cunningham <kyle> |
| Component: | Xine backend | Assignee: | Matthias Kretz <kretz> |
| Status: | CLOSED NOT A BUG | ||
| Severity: | normal | CC: | laimrylah, samangroup2022, stellamilos7, sven.burmeister, yojoe |
| Priority: | NOR | ||
| Version: | unspecified | ||
| Target Milestone: | --- | ||
| Platform: | Compiled Sources | ||
| OS: | Linux | ||
| Latest Commit: | Version Fixed In: | ||
| Sentry Crash Report: | |||
| Attachments: |
Powertop output on kernel version 2.6.22-hrt6
Powertop output on kernel version 2.6.23-rc8 strace of knotify4 Powertop output after disabling sound in kcmshell kcmnotify. |
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Description
Kyle Cunningham
2007-10-30 00:34:39 UTC
Created attachment 21944 [details]
Powertop output on kernel version 2.6.22-hrt6
Created attachment 21945 [details]
Powertop output on kernel version 2.6.23-rc8
Thanks for your report. I have not been able to identify the problem. I've tried to run knotify4 with strace, and I did not identified a special problem. There was no timer inside the knotify code, I do not see where the problem can be, maybe in phonon. Try this: - run knotify under strace. - disable sound in the knotify player preferences and see if the problem still happen. I ran strace and have attached it to the report. Additionally, it appears the disabling sound with knotify has done the trick. To do this I went into "kcmshell kcmnotify". I then disabled sounds on the player settings tab and also went through each event individually and disabled the sound event associated with each one. I have also attatched the output from powertop after I disabled sound. Created attachment 21987 [details]
strace of knotify4
Created attachment 21988 [details]
Powertop output after disabling sound in kcmshell kcmnotify.
I think that the cause of this bug it is related to Phonon or xine, because if I run Juk and amaroK from KDE4 which also uses Phonon they show the exact same bad numbers as knotify4. However using amaroK 1.4 which the xine backend but not with Phonon doesn't have this problem. new bug report opened at xine bugtracker: http://sourceforge.net/tracker/index.php?func=detail&aid=1833274&group_id=9655&atid=109655 I just installed the kde4.0 packages available from the ppa repository for kubuntu 7.10, and I see the bug: 52.6% (890.6) knotify4 : do_nanosleep (hrtimer_wakeup) 29.7% (427.2) <interrupt> : extra timer interrupt sorry, I did not read #8 The bug-report at sourceforge is private, are there any news? One can "work around" the bug by killing knotify4. It is restarted again but does not do any wakeups anymore. hi Thanks |