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| <html><head><title>Python: module telemetry.web_perf.metrics.mainthread_jank_stats</title> |
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| <td valign=bottom> <br> |
| <font color="#ffffff" face="helvetica, arial"> <br><big><big><strong><a href="telemetry.html"><font color="#ffffff">telemetry</font></a>.<a href="telemetry.web_perf.html"><font color="#ffffff">web_perf</font></a>.<a href="telemetry.web_perf.metrics.html"><font color="#ffffff">metrics</font></a>.mainthread_jank_stats</strong></big></big></font></td |
| ><td align=right valign=bottom |
| ><font color="#ffffff" face="helvetica, arial"><a href=".">index</a><br><a href="../telemetry/web_perf/metrics/mainthread_jank_stats.py">telemetry/web_perf/metrics/mainthread_jank_stats.py</a></font></td></tr></table> |
| <p><tt># Copyright 2014 The Chromium Authors. All rights reserved.<br> |
| # Use of this source code is governed by a BSD-style license that can be<br> |
| # found in the LICENSE file.</tt></p> |
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| <font color="#ffffff" face="helvetica, arial"><big><strong>Classes</strong></big></font></td></tr> |
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| <tr><td bgcolor="#ee77aa"><tt> </tt></td><td> </td> |
| <td width="100%"><dl> |
| <dt><font face="helvetica, arial"><a href="__builtin__.html#object">__builtin__.object</a> |
| </font></dt><dd> |
| <dl> |
| <dt><font face="helvetica, arial"><a href="telemetry.web_perf.metrics.mainthread_jank_stats.html#MainthreadJankStats">MainthreadJankStats</a> |
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| <font color="#000000" face="helvetica, arial"><a name="MainthreadJankStats">class <strong>MainthreadJankStats</strong></a>(<a href="__builtin__.html#object">__builtin__.object</a>)</font></td></tr> |
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| <tr bgcolor="#ffc8d8"><td rowspan=2><tt> </tt></td> |
| <td colspan=2><tt>Utility class for extracting main thread jank statistics from the timeline<br> |
| (or other loggin facilities), and providing them in a common format to<br> |
| classes that compute benchmark metrics from this data.<br> |
| <br> |
| total_big_jank_thread_time is the total thread duration of all top<br> |
| slices whose thread time ranges overlapped with any thread time ranges of<br> |
| the records and the overlapped thread duration is greater than or equal<br> |
| USER_PERCEIVABLE_DELAY_THRESHOLD_MS.<br> |
| <br> |
| biggest_jank_thread_time is the biggest thread duration of all<br> |
| top slices whose thread time ranges overlapped with any of records' thread<br> |
| time ranges.<br> </tt></td></tr> |
| <tr><td> </td> |
| <td width="100%">Methods defined here:<br> |
| <dl><dt><a name="MainthreadJankStats-__init__"><strong>__init__</strong></a>(self, renderer_thread, interaction_records)</dt></dl> |
| |
| <hr> |
| Data descriptors defined here:<br> |
| <dl><dt><strong>__dict__</strong></dt> |
| <dd><tt>dictionary for instance variables (if defined)</tt></dd> |
| </dl> |
| <dl><dt><strong>__weakref__</strong></dt> |
| <dd><tt>list of weak references to the object (if defined)</tt></dd> |
| </dl> |
| <dl><dt><strong>biggest_jank_thread_time</strong></dt> |
| </dl> |
| <dl><dt><strong>total_big_jank_thread_time</strong></dt> |
| </dl> |
| </td></tr></table></td></tr></table><p> |
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| <font color="#ffffff" face="helvetica, arial"><big><strong>Data</strong></big></font></td></tr> |
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| <tr><td bgcolor="#55aa55"><tt> </tt></td><td> </td> |
| <td width="100%"><strong>USER_PERCEIVABLE_DELAY_THRESHOLD_MS</strong> = 50</td></tr></table> |
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