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[Bug 1373392] Re: [mako] high cpu usage when playing audio via speaker

 

This is an issue that needs to be optimized for each supported device
platform. It's currently optimized for krillin, but not yet for the
nexus 4, 7 or 10.

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https://bugs.launchpad.net/bugs/1373392

Title:
  [mako] high cpu usage when playing audio via speaker

Status in pulseaudio package in Ubuntu:
  Confirmed

Bug description:
  $ system-image-cli -i
  current build number: 253
  device name: mako
  channel: ubuntu-touch/devel-proposed
  alias: ubuntu-touch/utopic-proposed
  last update: 2014-09-24 00:51:54
  version version: 253
  version ubuntu: 20140923.1
  version device: 20140923.1
  version custom: mako-0.6

  I noticed that when playing audio via the speaker/headphones the CPU
  usage is higher than when playing via a paired bluetooth speaker.

  Speaker CPU usage:
  Format pulse media-hub
  m4a 30  20
  flac 30  15
  mp3 25  20

  Bluetooth Speaker CPU usage:
  Format pulse media-hub
  m4a 10  15
  flac 10  10     
  mp3 15  10

  It has been suggested that changing the buffer size may resolve this
  issue.

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References