title: How do I stop GC_CONCURRENT running so frequently?
body: <p>I am using a thread which records the audio using AudioRecord class and placed in recorderBUffer (which is a linked list of Short[]) , a separate thread which does the encoding of this data and place it to a playerBuffer(linked list[]). For playing the Audio I am using AudioTrack class and onPeriodicNotification() I read the data from playerBuffer and write it to track. </p>
  
  <p>The code is simple and straight forwards as it appears. However it doesnt work the way it should. GC_CONCURRENT eats of all the time and which is causing AudioTrack restart so frequently(I guess!). I get following messages from LogCat:- </p>
  
  <pre><code>04-09 12:25:13.757: E/Constructor(10100): inside constructor 
  04-09 12:25:13.757: I/ApplicationPackageManager(10100): cscCountry is not German : INS
  04-09 12:25:17.429: E/startRecording(10100): start Recording
  04-09 12:25:17.445: I/AudioCapturer(10100): Audio Recorder created
  04-09 12:25:17.546: I/Audio Player(10100): Audio Track instance created buffer Size : 2972
  04-09 12:25:17.546: I/SpeexThread(10100): Thread Started Successfully..
  04-09 12:25:17.734: D/dalvikvm(10100): GC_CONCURRENT freed 55K, 44% free 3208K/5639K, external 408K/517K, paused 4ms+6ms
  04-09 12:25:17.945: D/dalvikvm(10100): GC_CONCURRENT freed 1K, 39% free 3765K/6151K, external 408K/517K, paused 3ms+8ms
  04-09 12:25:18.148: D/dalvikvm(10100): GC_CONCURRENT freed &lt;1K, 36% free 4277K/6663K, external 408K/517K, paused 3ms+8ms
  04-09 12:25:18.414: D/dalvikvm(10100): GC_CONCURRENT freed &lt;1K, 33% free 4981K/7367K, external 408K/517K, paused 3ms+9ms
  04-09 12:25:18.734: D/dalvikvm(10100): GC_CONCURRENT freed &lt;1K, 29% free 5877K/8263K, external 408K/517K, paused 3ms+9ms
  04-09 12:25:18.828: W/AudioTrack(10100): obtainBuffer() track 0x1d0478 disabled, restarting
  04-09 12:25:19.164: D/dalvikvm(10100): GC_CONCURRENT freed &lt;1K, 26% free 7093K/9479K, external 408K/517K, paused 3ms+9ms
  04-09 12:25:19.710: D/dalvikvm(10100): GC_CONCURRENT freed &lt;1K, 22% free 8693K/11079K, external 408K/517K, paused 3ms+9ms
  04-09 12:25:19.984: W/AudioTrack(10100): obtainBuffer() track 0x1d0478 disabled, restarting
  04-09 12:25:20.414: D/dalvikvm(10100): GC_CONCURRENT freed &lt;1K, 19% free 10741K/13127K, external 408K/517K, paused 3ms+9ms
  04-09 12:25:21.156: W/AudioTrack(10100): obtainBuffer() track 0x1d0478 disabled, restarting
  04-09 12:25:21.171: D/dalvikvm(10100): GC_CONCURRENT freed &lt;1K, 16% free 12789K/15175K, external 408K/517K, paused 3ms+11ms
  04-09 12:25:21.976: D/dalvikvm(10100): GC_CONCURRENT freed &lt;1K, 14% free 14837K/17223K, external 408K/517K, paused 3ms+9ms
  // same messages errors continue  
  04-09 12:25:28.117: W/AudioTrack(10100): obtainBuffer() track 0x1d0478 disabled, restarting
  04-09 12:25:29.242: D/dalvikvm(10100): GC_CONCURRENT freed 1K, 8% free 29172K/31559K, external 408K/517K, paused 3ms+11ms
  04-09 12:25:29.273: W/AudioTrack(10100): obtainBuffer() track 0x1d0478 disabled, restarting
  04-09 12:25:30.445: W/AudioTrack(10100): obtainBuffer() track 0x1d0478 disabled, restarting
  04-09 12:25:30.507: D/dalvikvm(10100): GC_CONCURRENT freed 1K, 8% free 31220K/33607K, external 408K/517K, paused 4ms+12ms
  04-09 12:25:31.601: W/AudioTrack(10100): obtainBuffer() track 0x1d0478 disabled, restarting
  04-09 12:25:31.820: D/dalvikvm(10100): GC_CONCURRENT freed 1K, 7% free 33268K/35655K, external 408K/517K, paused 3ms+12ms
  04-09 12:25:32.757: W/AudioTrack(10100): obtainBuffer() track 0x1d0478 disabled, restarting
  04-09 12:25:33.187: D/dalvikvm(10100): GC_CONCURRENT freed 1K, 7% free 35316K/37703K, external 408K/517K, paused 3ms+13ms
  04-09 12:25:33.929: W/AudioTrack(10100): obtainBuffer() track 0x1d0478 disabled, restarting
  04-09 12:25:34.593: D/dalvikvm(10100): GC_CONCURRENT freed 1K, 7% free 37364K/39751K, external 408K/517K, paused 4ms+11ms
  04-09 12:25:35.085: W/AudioTrack(10100): obtainBuffer() track 0x1d0478 disabled, restarting
  04-09 12:25:36.039: D/dalvikvm(10100): GC_CONCURRENT freed 1K, 6% free 39412K/41799K, external 408K/517K, paused 3ms+12ms
  04-09 12:25:36.242: W/AudioTrack(10100): obtainBuffer() track 0x1d0478 disabled, restarting
  04-09 12:25:37.406: W/AudioTrack(10100): obtainBuffer() track 0x1d0478 disabled, restarting
  04-09 12:25:37.617: D/dalvikvm(10100): GC_CONCURRENT freed 1K, 6% free 41460K/43847K, external 408K/517K, paused 5ms+13ms
  04-09 12:25:38.640: D/dalvikvm(10100): GC_FOR_MALLOC freed 1K, 6% free 43507K/45895K, external 408K/517K, paused 933ms
  04-09 12:25:38.656: I/SpeexThread(10100): exitting Thread
  04-09 12:25:38.656: E/stopRecording(10100): stop Recording
  </code></pre>
  
  <p>The AudiTrack is restarted every few miliseconds, and GArbage Collection is called almost continuously. How can I minimize GArbage Colloection calls and what is the reason behind AudioTrack restart ? Plz Help...</p>