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am d459bebd: Use the ratio of different CPU speeds to compute CPU power consumption per app.

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Merge commit 'd459bebd89756a8b735feb6f27bd864b0427feb7' into eclair-plus-aosp

* commit 'd459bebd89756a8b735feb6f27bd864b0427feb7':
  Use the ratio of different CPU speeds to compute CPU power consumption per app.
This commit is contained in:
Amith Yamasani
2009-09-20 17:03:52 -07:00
committed by Android Git Automerger
parent 06a20451d8 d459bebd89
commit 35b21807e8
1 changed files with 19 additions and 2 deletions
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21
src/com/android/settings/fuelgauge/PowerUsageSummary.java
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@@ -295,7 +295,12 @@ public class PowerUsageSummary extends PreferenceActivity implements Runnable {
private void processAppUsage() {
SensorManager sensorManager = (SensorManager)getSystemService(Context.SENSOR_SERVICE);
final int which = mStatsType;
final double powerCpuNormal = mPowerProfile.getAveragePower(PowerProfile.POWER_CPU_NORMAL);
final int speedSteps = mPowerProfile.getNumSpeedSteps();
final double[] powerCpuNormal = new double[speedSteps];
final long[] cpuSpeedStepTimes = new long[speedSteps];
for (int p = 0; p < speedSteps; p++) {
powerCpuNormal[p] = mPowerProfile.getAveragePower(PowerProfile.POWER_CPU_ACTIVE, p);
}
final double averageCostPerByte = getAverageDataCost();
long uSecTime = mStats.computeBatteryRealtime(SystemClock.elapsedRealtime() * 1000, which);
updateStatsPeriod(uSecTime);
@@ -322,7 +327,19 @@ public class PowerUsageSummary extends PreferenceActivity implements Runnable {
final long foregroundTime = ps.getForegroundTime(which);
cpuFgTime += foregroundTime * 10; // convert to millis
final long tmpCpuTime = (userTime + systemTime) * 10; // convert to millis
final double processPower = tmpCpuTime * powerCpuNormal;
int totalTimeAtSpeeds = 0;
// Get the total first
for (int step = 0; step < speedSteps; step++) {
cpuSpeedStepTimes[step] = ps.getTimeAtCpuSpeedStep(step, which);
totalTimeAtSpeeds += cpuSpeedStepTimes[step];
}
if (totalTimeAtSpeeds == 0) totalTimeAtSpeeds = 1;
// Then compute the ratio of time spent at each speed
double processPower = 0;
for (int step = 0; step < speedSteps; step++) {
double ratio = (double) cpuSpeedStepTimes[step] / totalTimeAtSpeeds;
processPower += ratio * tmpCpuTime * powerCpuNormal[step];
}
cpuTime += tmpCpuTime;
power += processPower;
if (highestDrain < processPower) {