| Index: tools/telemetry/docs/pydoc/telemetry.internal.platform.power_monitor.sysfs_power_monitor.html
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| -<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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| -<html><head><title>Python: module telemetry.internal.platform.power_monitor.sysfs_power_monitor</title>
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| -<meta charset="utf-8">
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| -</head><body bgcolor="#f0f0f8">
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| -<table width="100%" cellspacing=0 cellpadding=2 border=0 summary="heading">
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| -<tr bgcolor="#7799ee">
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| -<td valign=bottom> <br>
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| -<font color="#ffffff" face="helvetica, arial"> <br><big><big><strong><a href="telemetry.html"><font color="#ffffff">telemetry</font></a>.<a href="telemetry.internal.html"><font color="#ffffff">internal</font></a>.<a href="telemetry.internal.platform.html"><font color="#ffffff">platform</font></a>.<a href="telemetry.internal.platform.power_monitor.html"><font color="#ffffff">power_monitor</font></a>.sysfs_power_monitor</strong></big></big></font></td
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| -><td align=right valign=bottom
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| -><font color="#ffffff" face="helvetica, arial"><a href=".">index</a><br><a href="../telemetry/internal/platform/power_monitor/sysfs_power_monitor.py">telemetry/internal/platform/power_monitor/sysfs_power_monitor.py</a></font></td></tr></table>
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| - <p><tt># Copyright 2014 The Chromium Authors. All rights reserved.<br>
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| -# Use of this source code is governed by a BSD-style license that can be<br>
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| -# found in the LICENSE file.</tt></p>
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| -<p>
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| -<td colspan=3 valign=bottom> <br>
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| -<font color="#ffffff" face="helvetica, arial"><big><strong>Modules</strong></big></font></td></tr>
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| -<tr><td bgcolor="#aa55cc"><tt> </tt></td><td> </td>
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| -<td width="100%"><table width="100%" summary="list"><tr><td width="25%" valign=top><a href="collections.html">collections</a><br>
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| -<a href="telemetry.decorators.html">telemetry.decorators</a><br>
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| -</td><td width="25%" valign=top><a href="logging.html">logging</a><br>
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| -<a href="os.html">os</a><br>
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| -</td><td width="25%" valign=top><a href="telemetry.internal.platform.power_monitor.html">telemetry.internal.platform.power_monitor</a><br>
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| -<a href="re.html">re</a><br>
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| -</td><td width="25%" valign=top></td></tr></table></td></tr></table><p>
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| -<table width="100%" cellspacing=0 cellpadding=2 border=0 summary="section">
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| -<td colspan=3 valign=bottom> <br>
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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>
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| -<td width="100%"><dl>
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| -<dt><font face="helvetica, arial"><a href="telemetry.internal.platform.power_monitor.html#PowerMonitor">telemetry.internal.platform.power_monitor.PowerMonitor</a>(<a href="__builtin__.html#object">__builtin__.object</a>)
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| -</font></dt><dd>
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| -<dl>
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| -<dt><font face="helvetica, arial"><a href="telemetry.internal.platform.power_monitor.sysfs_power_monitor.html#SysfsPowerMonitor">SysfsPowerMonitor</a>
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| -</font></dt></dl>
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| -</dd>
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| -</dl>
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| - <p>
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| -<table width="100%" cellspacing=0 cellpadding=2 border=0 summary="section">
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| -<tr bgcolor="#ffc8d8">
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| -<td colspan=3 valign=bottom> <br>
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| -<font color="#000000" face="helvetica, arial"><a name="SysfsPowerMonitor">class <strong>SysfsPowerMonitor</strong></a>(<a href="telemetry.internal.platform.power_monitor.html#PowerMonitor">telemetry.internal.platform.power_monitor.PowerMonitor</a>)</font></td></tr>
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| -
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| -<tr bgcolor="#ffc8d8"><td rowspan=2><tt> </tt></td>
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| -<td colspan=2><tt><a href="telemetry.internal.platform.power_monitor.html#PowerMonitor">PowerMonitor</a> that relies on sysfs to monitor CPU statistics on several<br>
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| -different platforms.<br> </tt></td></tr>
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| -<tr><td> </td>
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| -<td width="100%"><dl><dt>Method resolution order:</dt>
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| -<dd><a href="telemetry.internal.platform.power_monitor.sysfs_power_monitor.html#SysfsPowerMonitor">SysfsPowerMonitor</a></dd>
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| -<dd><a href="telemetry.internal.platform.power_monitor.html#PowerMonitor">telemetry.internal.platform.power_monitor.PowerMonitor</a></dd>
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| -<dd><a href="__builtin__.html#object">__builtin__.object</a></dd>
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| -</dl>
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| -<hr>
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| -Methods defined here:<br>
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| -<dl><dt><a name="SysfsPowerMonitor-CanMonitorPower"><strong>CanMonitorPower</strong></a>(*args, **kwargs)</dt></dl>
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| -
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| -<dl><dt><a name="SysfsPowerMonitor-GetCpuFreq"><strong>GetCpuFreq</strong></a>(self)</dt><dd><tt>Retrieve CPU frequency times from the device.<br>
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| - <br>
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| -Returns:<br>
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| - Dictionary containing frequency times for each CPU.</tt></dd></dl>
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| -
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| -<dl><dt><a name="SysfsPowerMonitor-GetCpuState"><strong>GetCpuState</strong></a>(self)</dt><dd><tt>Retrieve CPU c-state residency times from the device.<br>
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| - <br>
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| -Returns:<br>
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| - Dictionary containing c-state residency times for each CPU.</tt></dd></dl>
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| -
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| -<dl><dt><a name="SysfsPowerMonitor-StartMonitoringPower"><strong>StartMonitoringPower</strong></a>(self, _browser)</dt></dl>
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| -
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| -<dl><dt><a name="SysfsPowerMonitor-StopMonitoringPower"><strong>StopMonitoringPower</strong></a>(self)</dt></dl>
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| -
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| -<dl><dt><a name="SysfsPowerMonitor-__init__"><strong>__init__</strong></a>(self, linux_based_platform_backend, standalone<font color="#909090">=False</font>)</dt><dd><tt>Constructor.<br>
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| - <br>
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| -Args:<br>
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| - linux_based_platform_backend: A LinuxBasedPlatformBackend object.<br>
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| - standalone: If it is not wrapping another monitor, set to True.<br>
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| - <br>
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| -Attributes:<br>
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| - _cpus: A list of the CPUs on the target device.<br>
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| - _end_time: The time the test stopped monitoring power.<br>
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| - _final_cstate: The c-state residency times after the test.<br>
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| - _final_freq: The CPU frequency times after the test.<br>
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| - _initial_cstate: The c-state residency times before the test.<br>
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| - _initial_freq: The CPU frequency times before the test.<br>
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| - _platform: A LinuxBasedPlatformBackend object associated with the<br>
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| - target platform.<br>
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| - _start_time: The time the test started monitoring power.</tt></dd></dl>
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| -
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| -<hr>
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| -Static methods defined here:<br>
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| -<dl><dt><a name="SysfsPowerMonitor-CombineResults"><strong>CombineResults</strong></a>(cpu_stats, power_stats)</dt><dd><tt>Add frequency and c-state residency data to the power data.<br>
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| - <br>
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| -Args:<br>
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| - cpu_stats: Dictionary containing CPU statistics.<br>
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| - power_stats: Dictionary containing power statistics.<br>
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| - <br>
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| -Returns:<br>
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| - Dictionary in the format returned by StopMonitoringPower.</tt></dd></dl>
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| -
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| -<dl><dt><a name="SysfsPowerMonitor-ComputeCpuStats"><strong>ComputeCpuStats</strong></a>(initial, final)</dt><dd><tt>Parse the CPU c-state and frequency values saved during monitoring.<br>
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| - <br>
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| -Args:<br>
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| - initial: The parsed dictionary of initial statistics to be converted<br>
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| - into percentages.<br>
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| - final: The parsed dictionary of final statistics to be converted<br>
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| - into percentages.<br>
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| - <br>
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| -Returns:<br>
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| - Dictionary containing percentages for each CPU as well as an average<br>
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| - across all CPUs.</tt></dd></dl>
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| -
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| -<dl><dt><a name="SysfsPowerMonitor-ParseFreqSample"><strong>ParseFreqSample</strong></a>(sample)</dt><dd><tt>Parse a single frequency sample.<br>
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| - <br>
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| -Args:<br>
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| - sample: The single sample of frequency data to be parsed.<br>
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| - <br>
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| -Returns:<br>
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| - A dictionary associating a frequency with a time.</tt></dd></dl>
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| -
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| -<hr>
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| -Methods inherited from <a href="telemetry.internal.platform.power_monitor.html#PowerMonitor">telemetry.internal.platform.power_monitor.PowerMonitor</a>:<br>
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| -<dl><dt><a name="SysfsPowerMonitor-CanMeasurePerApplicationPower"><strong>CanMeasurePerApplicationPower</strong></a>(self)</dt><dd><tt>Returns True if the power monitor can measure power for the target<br>
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| -application in isolation. False if power measurement is for full system<br>
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| -energy consumption.</tt></dd></dl>
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| -
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| -<hr>
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| -Data descriptors inherited from <a href="telemetry.internal.platform.power_monitor.html#PowerMonitor">telemetry.internal.platform.power_monitor.PowerMonitor</a>:<br>
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| -<dl><dt><strong>__dict__</strong></dt>
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| -<dd><tt>dictionary for instance variables (if defined)</tt></dd>
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| -</dl>
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| -<dl><dt><strong>__weakref__</strong></dt>
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| -<dd><tt>list of weak references to the object (if defined)</tt></dd>
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| -</dl>
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| -</td></tr></table></td></tr></table><p>
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| -<table width="100%" cellspacing=0 cellpadding=2 border=0 summary="section">
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| -<tr bgcolor="#55aa55">
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| -<td colspan=3 valign=bottom> <br>
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| -<font color="#ffffff" face="helvetica, arial"><big><strong>Data</strong></big></font></td></tr>
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| -
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| -<tr><td bgcolor="#55aa55"><tt> </tt></td><td> </td>
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| -<td width="100%"><strong>CPU_PATH</strong> = '/sys/devices/system/cpu/'</td></tr></table>
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| -</body></html>
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