https://bugs.freedesktop.org/show_bug.cgi?id=81288
Priority: medium
Bug ID: 81288
CC: [email protected]
Assignee: [email protected]
Summary: High cpu useage when running Skype
QA Contact: [email protected]
Severity: normal
Classification: Unclassified
OS: Linux (All)
Reporter: [email protected]
Hardware: x86 (IA32)
Status: NEW
Version: unspecified
Component: core
Product: PulseAudio
Created attachment 102690
--> https://bugs.freedesktop.org/attachment.cgi?id=102690&action=edit
sysprof screenshot of system-wide profile run
Running skype on my mother's old Pentium-4 based laptop, I noticed pulseaudio
consumes a fairly high share of CPU ressources.
As can be seen in the attached sysprof-screenshot, pulseaudio consumes almost
half the cycles skype does. However this was a video-call - so skype was not
only de- and encoding audio, but also video. Furthermore, pulseaudio consumed
almost 3 times the CPU cycles of Xorg required to push the video pixels to the
display.
System:
- Pentium 4, 2.6ghz
- Fedora 20 + latest updates
- pulseaudio-4.0-13.gitf81e3.fc20.i686
I've seen similar behaviour on my modern (sandy bridge core-i7) x86_64 laptop,
where pulseaudio consumes as much CPU cycles just playing sound as mplayer
needs to decode and display/output video and audio.
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