preview/testing/performance.jd

page.title=
page.image=images/cards/card-test-performance_2x.png
page.keywords=,fps,

@jd:body


<div id="qv-wrapper">
  <div id="qv">
    <h2></h2>
      <ol>
        <li><a href="#measure">UI </a>
          <ul>
            <li><a href="#aggregate"></a></li>
            <li><a href="#timing-info"> </a></li>
            <li><a href="#timing-dump">  </a></li>
            <li><a href="#collection-window"></a></li>
            <li><a href="#diagnose"></a></li>
            <li><a href="#resources"></a></li>
          </ul>
        </li>
        <li><a href="#automate">UI  </a>
          <ul>
            <li><a href="#ui-tests">UI </a></li>
            <li><a href="#automated-tests"> UI </a></li>
            <li><a href="#triage"></a></li>
          </ul>
        </li>
      </ol>
  </div>
</div>


<p>
   UI 60 <a href="https://www.youtube.com/watch?v=CaMTIgxCSqU&index=25&list=PLWz5rJ2EKKc9CBxr3BVjPTPoDPLdPIFCE">why 60fps?</a><em></em>


UI UI


</p>


<h2 id="measure">UI </h2>

<p>


</p>

<p>
  <em><a href="https://source.android.com/devices/tech/debug/dumpsys.html">dumpsys</a></em>   Android

<em>gfxinfo</em>  dumpsys  logcat


</p>

<pre>
&gt; adb shell dumpsys gfxinfo &lt;PACKAGE_NAME&gt;
</pre>

<p>

</p>

<h3 id="aggregate"></h3>

<p>
  M Preview  logcat

</p>

<pre class="noprettyprint">
Stats since: 752958278148ns
Total frames rendered: 82189
Janky frames: 35335 (42.99%)
90th percentile: 34ms
95th percentile: 42ms
99th percentile: 69ms
Number Missed Vsync: 4706
Number High input latency: 142
Number Slow UI thread: 17270
Number Slow bitmap uploads: 1542
Number Slow draw: 23342
</pre>

<p>


</p>


<h3 id="timing-info"> </h3>

<p>
  M Preview gfxinfo <em>framestats</em>


</p>

<pre>
&gt;adb shell dumpsys gfxinfo &lt;PACKAGE_NAME&gt; framestats
</pre>

<p>
   120  adb dumpsys gfxinfo
  &lt;PACKAGE_NAME&gt; framestats

</p>

<pre class="noprettyprint">
0,49762224585003,49762241251670,9223372036854775807,0,49762257627204,49762257646058,49762257969704,49762258002100,49762265541631,49762273951162,49762300914808,49762303675954,
0,49762445152142,49762445152142,9223372036854775807,0,49762446678818,49762446705589,49762447268818,49762447388037,49762453551527,49762457134131,49762474889027,49762476150120,
0,49762462118845,49762462118845,9223372036854775807,0,49762462595381,49762462619287,49762462919964,49762462968454,49762476194547,49762476483454,49762480214964,49762480911527,
0,49762479085548,49762479085548,9223372036854775807,0,49762480066370,49762480099339,49762481013089,49762481085850,49762482232152,49762482478350,49762485657620,49762486116683,
</pre>

<p>
   1


</p>


<h4 id="fs-data-format">Framestats </h4>

<p>
   CSV


</p>

<ul>
  <li>FLAGS
    <ul>
      <li>FLAGS 0FRAME_COMPLETED  INTENDED_VSYNC

      </li>

      <li>FLAGS 0 16


        <ul>
          <li>

          </li>

          <li>
 60 fps


          </li>
        </ul>
      </li>
    </ul>
  </li>

  <li>INTENDED_VSYNC
    <ul>
      <li> VSYNC vsync  UI


      </li>
    </ul>
  </li>

  <li>VSYNC
    <ul>
      <li> vsync Choreographer  View.getDrawingTime()

      </li>

      <li>VSYNC  VSYNC <a href="https://www.youtube.com/watch?v=1iaHxmfZGGc&list=PLOU2XLYxmsIKEOXh5TwZEv89aofHzNCiu&index=23">Understanding VSYNC</a>


      </li>
    </ul>
  </li>

  <li>OLDEST_INPUT_EVENT
    <ul>
      <li>Long.MAX_VALUE

      </li>

      <li>

      </li>
    </ul>
  </li>

  <li>NEWEST_INPUT_EVENT
    <ul>
      <li>0

      </li>

      <li>

      </li>

      <li>FRAME_COMPLETED  NEWEST_INPUT_EVENT

      </li>
    </ul>
  </li>

  <li>HANDLE_INPUT_START
    <ul>
      <li>
      </li>

      <li> ANIMATION_START

      </li>

      <li>&gt; 2 View.onTouchEvent()


      </li>
    </ul>
  </li>

  <li>ANIMATION_START
    <ul>
      <li>Choreographer
      </li>

      <li> PERFORM_TRANVERSALS_START ObjectAnimatorViewPropertyAnimator Transitions


      </li>

      <li>&gt; 2   ObjectAnimators


      </li>

      <li>Choreographer <a href="https://developers.google.com/events/io/sessions/325418001">For Butter or Worse</a>

      </li>
    </ul>
  </li>

  <li>PERFORM_TRAVERSALS_START
    <ul>
      <li> DRAW_START


      </li>

      <li> <a href="https://www.youtube.com/watch?v=we6poP0kw6E&list=PLOU2XLYxmsIKEOXh5TwZEv89aofHzNCiu&index=27">Invalidations, Layouts and Performance</a>


      </li>
    </ul>
  </li>

  <li>DRAW_START
    <ul>
      <li>performTraversals

      </li>

      <li> SYNC_START  View.draw()

      </li>

      <li><a href="{@docRoot}guide/topics/graphics/hardware-accel.html#hardware-model">Hardware Acceleration</a>  <a href="https://www.youtube.com/watch?v=we6poP0kw6E&list=PLOU2XLYxmsIKEOXh5TwZEv89aofHzNCiu&index=27">Invalidations, Layouts and Performance</a>


      </li>
    </ul>
  </li>

  <li>SYNC_START
    <ul>
      <li>
      </li>

      <li> ISSUE_DRAW_COMMANDS_START &gt; 0.4 GPU  Bitmaps


      </li>

      <li><a href="https://www.youtube.com/watch?v=VzYkVL1n4M8&index=24&list=PLOU2XLYxmsIKEOXh5TwZEv89aofHzNCiu">Profile GPU Rendering</a>

      </li>
    </ul>
  </li>

  <li>ISSUE_DRAW_COMMANDS_START
    <ul>
      <li> GPU
      </li>

      <li> FRAME_COMPLETED  GPU


      </li>
    </ul>
  </li>

  <li>SWAP_BUFFERS
    <ul>
      <li>eglSwapBuffers

      </li>
    </ul>
  </li>

  <li>FRAME_COMPLETED
    <ul>
      <li>FRAME_COMPLETED  INTENDED_VSYNC

      </li>
    </ul>
  </li>

</ul>

<p>
  FRAME_COMPLETED - INTENDED_VSYNC

 16


</p>

<img src="{@docRoot}preview/images/perf-test-framestats.png">


<h3 id="timing-dump">  </h3>

<p>
  []  [<strong>GPU</strong>]  [<strong>adb shell dumpsys gfxinfo</strong>] <code>adb shell dumpsys gfxinfo</code>  120


</p>

<p>
   <a href="#fs-data-format">framestats</a>


</p>

<img src="{@docRoot}preview/images/perf-test-frame-latency.png">

<p>
  gfxinfo

</p>

<p>
   1


 <a href="https://www.youtube.com/watch?v=we6poP0kw6E&index=27&list=PLWz5rJ2EKKc9CBxr3BVjPTPoDPLdPIFCE">Invalidations, Layouts and Performance</a>


</p>


<h3 id="collection-window"></h3>

<p>
  Framestats   2


</p>

<pre>
&gt;adb shell dumpsys gfxinfo &lt;PACKAGE_NAME&gt; reset
</pre>

<p>
    2


</p>


<h3 id="diagnose"></h3>

<p>

dumpsys

<a href="{@docRoot}tools/help/systrace.html">systrace</a>

</p>


<h3 id="resources"></h3>

<p>
  Android


</p>

<ul>
  <li>Rendering Performance 101
  </li>
  <li>Why 60fps?
  </li>
  <li>Android UI and the GPU
  </li>
  <li>Invalidations Layouts and performance
  </li>
  <li>Analyzing UI Performance with Systrace
  </li>
</ul>


<h2 id="automate">UI  </h2>

<p>
  UI  1


</p>

<p>
   UI
Android M Developer Preview


</p>

<p>


</p>

<p>
   2


</p>


<h3 id="ui-tests">UI </h3>

<p>


</p>

<h4>

</h4>

<p>

 UI


</p>

<ul>
  <li> ListView  RecyclerView
  </li>

  <li>
  </li>

  <li>
  </li>

  <li>
  </li>

  <li>
  </li>
</ul>

<p>


</p>

<h4>

</h4>

<p>


</p>

<ul>
  <li> UI
  </li>

  <li>
  </li>

  <li> 90%  98 %
  </li>

  <li> 98%
  </li>

  <li>
  </li>
</ul>

<p>


</p>

<h4>

</h4>

<p>
  GPU CPU


 CPU RAM


</p>

<h4>
  UI
</h4>

<p>
  <a href="{@docRoot}training/testing/ui-testing/uiautomator-testing.html">UI Automator</a>  <a href="{@docRoot}training/testing/ui-testing/espresso-testing.html">Espresso</a>


</p>

<p>
  <code>dumpsys gfxinfo</code>


</p>


<h3 id="automated-tests"> UI </h3>

<p>
  UI 1


</p>

<h4>

</h4>

<p>
  UI <a href="{@docRoot}training/testing/ui-testing/uiautomator-testing.html">UI Automator</a>
<em>dumpsys gfxinfo</em>  ADB
<a href="{@docRoot}tools/help/monkeyrunner_concepts.html">MonkeyRunner</a>


</p>

<p>
  UI   MonkeyRunner

</p>

<ul>
  <li>1  APK
  </li>

  <li>UI Automator UI
  </li>

  <li><em>dumpsys gfxinfo</em><em></em>
  </li>

  <li>
  </li>
</ul>


<h3 id="triage"></h3>

<p>


 <a href="{@docRoot}tools/help/systrace.html">systrace</a> systrace


</p>

<h4>

</h4>

<p>


 2


</p>

<p>


</p>

<p>

WRT


</p>

<p>
   UI


</p>

<p>
   10 50  100


</p>