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Use appropriate units for timing tests

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This commit is contained in:
Zach Pomerantz 2016-05-03 15:32:08 -07:00
parent 42169ddcb3
commit 0f6162d683
2 changed files with 43 additions and 32 deletions
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74
interface/src/Util.cpp
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@ -136,66 +136,76 @@ void runTimingTests() {
float fTest = 1.0;
float* fResults = (float*)malloc(sizeof(float) * numTests);
QElapsedTimer startTime;
startTime.start();
float elapsedUsecs;
float elapsedNSecs;
float elapsedUSecs;
float NSEC_TO_USEC = 1.0f / 1000.0f;
elapsedUsecs = (float)startTime.nsecsElapsed() * NSEC_TO_USEC;
qCDebug(interfaceapp, "QElapsedTimer::nsecElapsed() usecs: %f", (double)elapsedUsecs);
startTime.start();
elapsedNSecs = (float)startTime.nsecsElapsed();
qCDebug(interfaceapp, "QElapsedTimer::nsecElapsed() ns: %f", (double)elapsedNSecs);
// Test sleep functions for accuracy
startTime.start();
QThread::msleep(1);
elapsedUsecs = (float)startTime.nsecsElapsed() * NSEC_TO_USEC;
qCDebug(interfaceapp, "QThread::msleep(1) ms: %f", (double)(elapsedUsecs / 1000.0f));
elapsedNSecs = (float)startTime.nsecsElapsed();
qCDebug(interfaceapp, "QThread::msleep(1) ms: %f", (double)(elapsedNSecs / NSECS_PER_MSEC));
startTime.start();
QThread::sleep(1);
elapsedUsecs = (float)startTime.nsecsElapsed() * NSEC_TO_USEC;
qCDebug(interfaceapp, "QThread::sleep(1) ms: %f", (double)(elapsedUsecs / 1000.0f));
elapsedNSecs = (float)startTime.nsecsElapsed();
qCDebug(interfaceapp, "QThread::sleep(1) s: %f", (double)(elapsedNSecs / NSECS_PER_MSEC / MSECS_PER_SECOND));
startTime.start();
usleep(1);
elapsedUsecs = (float)startTime.nsecsElapsed() * NSEC_TO_USEC;
qCDebug(interfaceapp, "usleep(1) ms: %f", (double)(elapsedUsecs / 1000.0f));
elapsedNSecs = (float)startTime.nsecsElapsed();
qCDebug(interfaceapp, "usleep(1) us: %f", (double)(elapsedNSecs / NSECS_PER_USEC));
startTime.start();
usleep(10);
elapsedUsecs = (float)startTime.nsecsElapsed() * NSEC_TO_USEC;
qCDebug(interfaceapp, "usleep(10) ms: %f", (double)(elapsedUsecs / 1000.0f));
elapsedNSecs = (float)startTime.nsecsElapsed();
qCDebug(interfaceapp, "usleep(10) us: %f", (double)(elapsedNSecs / NSECS_PER_USEC));
startTime.start();
usleep(100);
elapsedUsecs = (float)startTime.nsecsElapsed() * NSEC_TO_USEC;
qCDebug(interfaceapp, "usleep(100) ms: %f", (double)(elapsedUsecs / 1000.0f));
elapsedNSecs = (float)startTime.nsecsElapsed();
qCDebug(interfaceapp, "usleep(100) us: %f", (double)(elapsedNSecs / NSECS_PER_USEC));
startTime.start();
usleep(1000);
elapsedUsecs = (float)startTime.nsecsElapsed() * NSEC_TO_USEC;
qCDebug(interfaceapp, "usleep(1000) ms: %f", (double)(elapsedUsecs / 1000.0f));
elapsedNSecs = (float)startTime.nsecsElapsed();
qCDebug(interfaceapp, "usleep(1000) us: %f", (double)(elapsedNSecs / NSECS_PER_USEC));
startTime.start();
usleep(1500);
elapsedNSecs = (float)startTime.nsecsElapsed();
qCDebug(interfaceapp, "usleep(1500) us: %f", (double)(elapsedNSecs / NSECS_PER_USEC));
startTime.start();
usleep(2500);
elapsedNSecs = (float)startTime.nsecsElapsed();
qCDebug(interfaceapp, "usleep(2500) us: %f", (double)(elapsedNSecs / NSECS_PER_USEC));
startTime.start();
usleep(15000);
elapsedUsecs = (float)startTime.nsecsElapsed() * NSEC_TO_USEC;
qCDebug(interfaceapp, "usleep(15000) ms: %f", (double)(elapsedUsecs / 1000.0f));
elapsedNSecs = (float)startTime.nsecsElapsed();
qCDebug(interfaceapp, "usleep(15000) us: %f", (double)(elapsedNSecs / NSECS_PER_USEC));
// Random number generation
startTime.start();
for (int i = 0; i < numTests; i++) {
iResults[i] = rand();
}
elapsedUsecs = (float)startTime.nsecsElapsed() * NSEC_TO_USEC;
elapsedUSecs = (float)startTime.nsecsElapsed() / NSECS_PER_USEC;
qCDebug(interfaceapp, "rand() stored in array usecs: %f, first result:%d",
(double)(elapsedUsecs / numTests), iResults[0]);
(double)(elapsedUSecs / numTests), iResults[0]);
// Random number generation using randFloat()
startTime.start();
for (int i = 0; i < numTests; i++) {
fResults[i] = randFloat();
}
elapsedUsecs = (float)startTime.nsecsElapsed() * NSEC_TO_USEC;
elapsedUSecs = (float)startTime.nsecsElapsed() / NSECS_PER_USEC;
qCDebug(interfaceapp, "randFloat() stored in array usecs: %f, first result: %f",
(double)(elapsedUsecs / numTests), (double)(fResults[0]));
(double)(elapsedUSecs / numTests), (double)(fResults[0]));
free(iResults);
free(fResults);
@ -206,8 +216,8 @@ void runTimingTests() {
for (int i = 0; i < numTests; i++) {
fTest = powf(fTest, 0.5f);
}
elapsedUsecs = (float)startTime.nsecsElapsed() * NSEC_TO_USEC;
qCDebug(interfaceapp, "powf(f, 0.5) usecs: %f", (double)(elapsedUsecs / (float) numTests));
elapsedUSecs = (float)startTime.nsecsElapsed() / NSECS_PER_USEC;
qCDebug(interfaceapp, "powf(f, 0.5) usecs: %f", (double)(elapsedUSecs / (float) numTests));
// Vector Math
float distance;
@ -218,9 +228,9 @@ void runTimingTests() {
//float distanceSquared = glm::dot(temp, temp);
distance = glm::distance(pointA, pointB);
}
elapsedUsecs = (float)startTime.nsecsElapsed() * NSEC_TO_USEC;
elapsedUSecs = (float)startTime.nsecsElapsed() / NSECS_PER_USEC;
qCDebug(interfaceapp, "vector math usecs: %f [%f usecs total for %d tests], last result:%f",
(double)(elapsedUsecs / (float) numTests), (double)elapsedUsecs, numTests, (double)distance);
(double)(elapsedUSecs / (float) numTests), (double)elapsedUSecs, numTests, (double)distance);
// Vec3 test
glm::vec3 vecA(randVector()), vecB(randVector());
@ -231,9 +241,9 @@ void runTimingTests() {
glm::vec3 temp = vecA-vecB;
result = glm::dot(temp,temp);
}
elapsedUsecs = (float)startTime.nsecsElapsed() * NSEC_TO_USEC;
elapsedUSecs = (float)startTime.nsecsElapsed() / NSECS_PER_USEC;
qCDebug(interfaceapp, "vec3 assign and dot() usecs: %f, last result:%f",
(double)(elapsedUsecs / numTests), (double)result);
(double)(elapsedUSecs / numTests), (double)result);
quint64 BYTE_CODE_MAX_TEST_VALUE = 99999999;
@ -265,9 +275,9 @@ void runTimingTests() {
}
}
elapsedUsecs = (float)startTime.nsecsElapsed() * NSEC_TO_USEC;
qCDebug(interfaceapp) << "ByteCountCoded<quint64> usecs: " << elapsedUsecs
<< "per test:" << (double) (elapsedUsecs / tests)
elapsedUSecs = (float)startTime.nsecsElapsed() / NSECS_PER_USEC;
qCDebug(interfaceapp) << "ByteCountCoded<quint64> usecs: " << elapsedUSecs
<< "per test:" << (double) (elapsedUSecs / tests)
<< "tests:" << tests
<< "failed:" << failed;
}

1
libraries/shared/src/NumericalConstants.h
View file

@ -35,6 +35,7 @@ const float METERS_PER_CENTIMETER = 0.01f;
const float METERS_PER_MILLIMETER = 0.001f;
const float MILLIMETERS_PER_METER = 1000.0f;
const quint64 NSECS_PER_USEC = 1000;
const quint64 NSECS_PER_MSEC = 1000000;
const quint64 USECS_PER_MSEC = 1000;
const quint64 MSECS_PER_SECOND = 1000;
const quint64 USECS_PER_SECOND = USECS_PER_MSEC * MSECS_PER_SECOND;