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[Stephan Sokolow <1378679@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

Normally, the pulseaudio process consumes 0% CPU when no audio is
playing and, by selecting a more lightweight resampling algorithm, can
be configured to consume any of these amounts of CPU on my AthlonII X2
270:

* 0% (no audio playing)
* 2% (one audio stream)
* 3% (one audio stream, tsched=0)
* 6-7% (two audio streams)
* 7-8% (two audio streams, tsched=0)

However, in all of the aforementioned cases, simply having pavucontrol
open causes the pulseaudio process to idle at 10-12% CPU usage.

While I'm not 100% certain where the problem lies, I'm filing it on
pavucontrol because alternative PulseAudio mixer GUIs such as veromix do
not trigger this problem, even when configured to busy pulseaudio with
queries by displaying volume meters on all channels, input and output.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: pavucontrol 2.0-2
ProcVersionSignature: Ubuntu 3.13.0-35.62-generic 3.13.11.6
Uname: Linux 3.13.0-35-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.14.1-0ubuntu3.5
Architecture: amd64
CurrentDesktop: LXDE
Date: Wed Oct  8 03:55:58 2014
InstallationDate: Installed on 2014-08-01 (68 days ago)
InstallationMedia: Lubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.2)
SourcePackage: pavucontrol
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: pavucontrol (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug third-party-packages trusty

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https://bugs.launchpad.net/bugs/1378679

Title:
  pavucontrol forces pulseaudio process to consume 10% CPU at minimum

Status in “pavucontrol” package in Ubuntu:
  New

Bug description:
  Normally, the pulseaudio process consumes 0% CPU when no audio is
  playing and, by selecting a more lightweight resampling algorithm, can
  be configured to consume any of these amounts of CPU on my AthlonII X2
  270:

  * 0% (no audio playing)
  * 2% (one audio stream)
  * 3% (one audio stream, tsched=0)
  * 6-7% (two audio streams)
  * 7-8% (two audio streams, tsched=0)

  However, in all of the aforementioned cases, simply having pavucontrol
  open causes the pulseaudio process to idle at 10-12% CPU usage.

  While I'm not 100% certain where the problem lies, I'm filing it on
  pavucontrol because alternative PulseAudio mixer GUIs such as veromix
  do not trigger this problem, even when configured to busy pulseaudio
  with queries by displaying volume meters on all channels, input and
  output.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: pavucontrol 2.0-2
  ProcVersionSignature: Ubuntu 3.13.0-35.62-generic 3.13.11.6
  Uname: Linux 3.13.0-35-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.14.1-0ubuntu3.5
  Architecture: amd64
  CurrentDesktop: LXDE
  Date: Wed Oct  8 03:55:58 2014
  InstallationDate: Installed on 2014-08-01 (68 days ago)
  InstallationMedia: Lubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.2)
  SourcePackage: pavucontrol
  UpgradeStatus: No upgrade log present (probably fresh install)

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