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randomasciiBruce Dawson
randomascii
authored and
Bruce Dawson
committed
Command-line tool for monitoring Intel power MSRs
The CPowerStatusMonitor class is mostly a copy of the same class in UIforETW, modify to suit the command-line environment. Generalizing it to allow code sharing is left as an exercise for the reader, but doesn't really seem worth it. This tool prints various power and temperature stats occasionally. There are no options.
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‎PowerMon/PowerMon.cpp

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#include "stdafx.h"
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#include <string>
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#include "PowerStatus.h"
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const int kSamplingInterval = 2000;
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int _tmain(int argc, _TCHAR* argv[])
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{
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CPowerStatusMonitor monitor;
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if (!monitor.IsInitialized())
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{
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printf("Couldn't find Intel Power Gadget. Make sure it is installed and IPG_Dir environment variable is visible to this process.\n");
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return 0;
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}
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for (;;)
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{
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monitor.SampleCPUPowerState();
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Sleep(kSamplingInterval);
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wprintf(L"\n");
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}
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return 0;
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}

‎PowerMon/PowerMon.sln

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Microsoft Visual Studio Solution File, Format Version 12.00
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# Visual Studio 2013
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VisualStudioVersion = 12.0.31101.0
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MinimumVisualStudioVersion = 10.0.40219.1
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Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "PowerMon", "PowerMon.vcxproj", "{06F58C67-77E3-493A-B463-88888CCA6B1D}"
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EndProject
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Global
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GlobalSection(SolutionConfigurationPlatforms) = preSolution
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Debug|Win32 = Debug|Win32
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Release|Win32 = Release|Win32
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EndGlobalSection
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GlobalSection(ProjectConfigurationPlatforms) = postSolution
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{06F58C67-77E3-493A-B463-88888CCA6B1D}.Debug|Win32.ActiveCfg = Debug|Win32
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{06F58C67-77E3-493A-B463-88888CCA6B1D}.Debug|Win32.Build.0 = Debug|Win32
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{06F58C67-77E3-493A-B463-88888CCA6B1D}.Release|Win32.ActiveCfg = Release|Win32
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{06F58C67-77E3-493A-B463-88888CCA6B1D}.Release|Win32.Build.0 = Release|Win32
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EndGlobalSection
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GlobalSection(SolutionProperties) = preSolution
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HideSolutionNode = FALSE
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EndGlobalSection
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EndGlobal

‎PowerMon/PowerMon.vcxproj

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<?xml version="1.0" encoding="utf-8"?>
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<Project DefaultTargets="Build" ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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<ProjectConfiguration Include="Debug|Win32">
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<ProjectConfiguration Include="Release|Win32">
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<Configuration>Release</Configuration>
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<Platform>Win32</Platform>
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</ProjectConfiguration>
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</ItemGroup>
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<PropertyGroup Label="Globals">
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<ProjectGuid>{06F58C67-77E3-493A-B463-88888CCA6B1D}</ProjectGuid>
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<Keyword>Win32Proj</Keyword>
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<RootNamespace>PowerMon</RootNamespace>
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</PropertyGroup>
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<Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
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<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
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<ConfigurationType>Application</ConfigurationType>
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<UseDebugLibraries>true</UseDebugLibraries>
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<PlatformToolset>v140</PlatformToolset>
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<CharacterSet>Unicode</CharacterSet>
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<PropertyGroup Label="UserMacros" />
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<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
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<LinkIncremental>true</LinkIncremental>
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<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
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<LinkIncremental>false</LinkIncremental>
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</PropertyGroup>
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<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
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<ClCompile>
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<PrecompiledHeader>Use</PrecompiledHeader>
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<WarningLevel>Level3</WarningLevel>
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<Optimization>Disabled</Optimization>
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<PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
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<SDLCheck>true</SDLCheck>
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<RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
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</ClCompile>
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<Link>
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<SubSystem>Console</SubSystem>
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<GenerateDebugInformation>true</GenerateDebugInformation>
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</Link>
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<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
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<ClCompile>
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<WarningLevel>Level3</WarningLevel>
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<PrecompiledHeader>Use</PrecompiledHeader>
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<Optimization>MaxSpeed</Optimization>
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<FunctionLevelLinking>true</FunctionLevelLinking>
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<IntrinsicFunctions>true</IntrinsicFunctions>
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<PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
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<SDLCheck>true</SDLCheck>
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<RuntimeLibrary>MultiThreaded</RuntimeLibrary>
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</ClCompile>
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<Link>
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<SubSystem>Console</SubSystem>
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<GenerateDebugInformation>true</GenerateDebugInformation>
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<EnableCOMDATFolding>true</EnableCOMDATFolding>
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<OptimizeReferences>true</OptimizeReferences>
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</Link>
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</ItemDefinitionGroup>
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<ItemGroup>
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<ClInclude Include="PowerStatus.h" />
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<ClInclude Include="stdafx.h" />
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<ClInclude Include="targetver.h" />
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</ItemGroup>
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<ItemGroup>
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<ClCompile Include="PowerMon.cpp" />
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<ClCompile Include="PowerStatus.cpp" />
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<ClCompile Include="stdafx.cpp">
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<PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">Create</PrecompiledHeader>
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<Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
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<ImportGroup Label="ExtensionTargets">
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</Project>

‎PowerMon/PowerMon.vcxproj.filters

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<Extensions>cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
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<ClInclude Include="PowerStatus.h">
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<Filter>Header Files</Filter>
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‎PowerMon/PowerStatus.cpp

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/*
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Copyright 2015 Google Inc. All Rights Reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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#include "stdafx.h"
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#include <string>
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#include "PowerStatus.h"
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// These correspond to the funcID values returned by GetMsrFunc
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// They are documented here:
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// https://software.intel.com/en-us/blogs/2014/01/07/using-the-intel-power-gadget-30-api-on-windows
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// Sample code from there was used to help create the Power Gadget API
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// code.
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const int MSR_FUNC_FREQ = 0;
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const int MSR_FUNC_POWER = 1;
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const int MSR_FUNC_TEMP = 2;
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const int MSR_FUNC_MAX_POWER = 3; /* ????? */
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void CPowerStatusMonitor::SampleCPUPowerState()
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{
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if (!IntelEnergyLibInitialize || !GetNumMsrs || !GetMsrName || !GetMsrFunc ||
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!GetPowerData || !ReadSample)
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{
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return;
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}
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int numMSRs = 0;
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GetNumMsrs(&numMSRs);
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ReadSample();
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for (int i = 0; i < numMSRs; ++i)
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{
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int funcID;
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wchar_t MSRName[1024];
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GetMsrFunc(i, &funcID);
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GetMsrName(i, MSRName);
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int nData;
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double data[3] = {};
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GetPowerData(0, i, data, &nData);
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if (funcID == MSR_FUNC_FREQ)
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{
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wprintf(L"%s = %4.0f MHz\n", MSRName, data[0]);
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}
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else if (funcID == MSR_FUNC_POWER)
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{
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// Round to nearest .0001 to avoid distracting excess precision.
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data[0] = round(data[0] * 10000) / 10000;
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data[2] = round(data[2] * 10000) / 10000;
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wprintf(L"%s Power (W) = %3.2f\n", MSRName, data[0]);
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wprintf(L"%s Energy(J) = %3.2f\n", MSRName, data[1]);
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wprintf(L"%s Energy(mWh)=%3.2f\n", MSRName, data[2]);
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}
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else if (funcID == MSR_FUNC_TEMP)
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{
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// The 3.02 version of Intel Power Gadget seems to report the temperature
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// in F instead of C.
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wprintf(L"%s Temp (C) = %3.0f (max is %3.0f)\n", MSRName, data[0], (double)maxTemperature_);
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}
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else if (funcID == MSR_FUNC_MAX_POWER)
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{
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//wprintf(L"%s Max Power (W) = %3.0f\n", MSRName, data[0]);
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}
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else
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{
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//wprintf(L"Unused funcID %d\n", funcID);
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}
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}
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}
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CPowerStatusMonitor::CPowerStatusMonitor()
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{
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// If Intel Power Gadget is installed then use it to get CPU power data.
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#if _M_X64
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PCWSTR dllName = L"\\EnergyLib64.dll";
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#else
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PCWSTR dllName = L"\\EnergyLib32.dll";
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#endif
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#pragma warning(disable : 4996)
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PCWSTR powerGadgetDir = _wgetenv(L"IPG_Dir");
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if (powerGadgetDir)
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energyLib_ = LoadLibrary((std::wstring(powerGadgetDir) + dllName).c_str());
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if (energyLib_)
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{
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IntelEnergyLibInitialize = (IntelEnergyLibInitialize_t)GetProcAddress(energyLib_, "IntelEnergyLibInitialize");
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GetNumMsrs = (GetNumMsrs_t)GetProcAddress(energyLib_, "GetNumMsrs");
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GetMsrName = (GetMsrName_t)GetProcAddress(energyLib_, "GetMsrName");
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GetMsrFunc = (GetMsrFunc_t)GetProcAddress(energyLib_, "GetMsrFunc");
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GetPowerData = (GetPowerData_t)GetProcAddress(energyLib_, "GetPowerData");
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ReadSample = (ReadSample_t)GetProcAddress(energyLib_, "ReadSample");
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auto GetMaxTemperature = (GetMaxTemperature_t)GetProcAddress(energyLib_, "GetMaxTemperature");
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if (IntelEnergyLibInitialize && ReadSample)
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{
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if (IntelEnergyLibInitialize())
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{
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if (GetMaxTemperature)
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GetMaxTemperature(0, &maxTemperature_);
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ReadSample();
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}
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else
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{
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// Mark the library as unavailable if Initialize fails
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ClearEnergyLibFunctionPointers();
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}
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}
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}
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}
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void CPowerStatusMonitor::ClearEnergyLibFunctionPointers()
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{
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IntelEnergyLibInitialize = nullptr;
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GetNumMsrs = nullptr;
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GetMsrName = nullptr;
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GetMsrFunc = nullptr;
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GetPowerData = nullptr;
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ReadSample = nullptr;
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}

‎PowerMon/PowerStatus.h

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/*
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Copyright 2015 Google Inc. All Rights Reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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#pragma once
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// https://software.intel.com/en-us/blogs/2012/12/13/using-the-intel-power-gadget-api-on-mac-os-x
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typedef int(*IntelEnergyLibInitialize_t)();
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typedef int(*GetNumMsrs_t)(int* nMsr);
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typedef int(*GetMsrName_t)(int iMsr, wchar_t* szName);
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typedef int(*GetMsrFunc_t)(int iMsr, int* pFuncID);
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typedef int(*GetPowerData_t)(int iNode, int iMsr, double* pResult, int* nResult);
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typedef int(*ReadSample_t)();
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typedef int(*GetMaxTemperature_t)(int iNode, int* degreeC);
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// This is mostly a copy of the CPowerStatusMonitor class from UIforETW.
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class CPowerStatusMonitor
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{
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public:
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CPowerStatusMonitor();
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void SampleCPUPowerState();
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bool IsInitialized() const
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{
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return energyLib_ != nullptr;
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}
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private:
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void ClearEnergyLibFunctionPointers();
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HMODULE energyLib_ = nullptr;
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IntelEnergyLibInitialize_t IntelEnergyLibInitialize = nullptr;
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GetNumMsrs_t GetNumMsrs = nullptr;
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GetMsrName_t GetMsrName = nullptr;
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GetMsrFunc_t GetMsrFunc = nullptr;
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GetPowerData_t GetPowerData = nullptr;
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ReadSample_t ReadSample = nullptr;
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int maxTemperature_ = 0;
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CPowerStatusMonitor& operator=(const CPowerStatusMonitor&) = delete;
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CPowerStatusMonitor(const CPowerStatusMonitor&) = delete;
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};

‎PowerMon/stdafx.cpp

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/*
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Copyright 2015 Google Inc. All Rights Reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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// stdafx.cpp : source file that includes just the standard includes
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// PowerMon.pch will be the pre-compiled header
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// stdafx.obj will contain the pre-compiled type information
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#include "stdafx.h"
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// TODO: reference any additional headers you need in STDAFX.H
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// and not in this file

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