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Replaced windows usleep version with a non busy waiting high accuracy version. This fixes the high CPU load for the windows servers too!

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Kai Ludwig 2014-06-15 21:07:03 +02:00
parent 3fbde70f96
commit 05900420a5
1 changed files with 39 additions and 1 deletions
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40
interface/src/Util.cpp
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@ -21,6 +21,8 @@
#include <SharedUtil.h>
#include <QThread>
#include "InterfaceConfig.h"
#include "ui/TextRenderer.h"
#include "VoxelConstants.h"
@ -409,8 +411,44 @@ void runTimingTests() {
float NSEC_TO_USEC = 1.0f / 1000.0f;
elapsedUsecs = (float)startTime.nsecsElapsed() * NSEC_TO_USEC;
qDebug("QElapsedTimer::nsecElapsed() usecs: %f", elapsedUsecs / (float) numTests);
qDebug("QElapsedTimer::nsecElapsed() usecs: %f", elapsedUsecs);
// Test sleep functions for accuracy
startTime.start();
QThread::msleep(1);
elapsedUsecs = (float)startTime.nsecsElapsed() * NSEC_TO_USEC;
qDebug("QThread::msleep(1) ms: %f", elapsedUsecs / 1000.0f);
startTime.start();
QThread::sleep(1);
elapsedUsecs = (float)startTime.nsecsElapsed() * NSEC_TO_USEC;
qDebug("QThread::sleep(1) ms: %f", elapsedUsecs / 1000.0f);
startTime.start();
usleep(1);
elapsedUsecs = (float)startTime.nsecsElapsed() * NSEC_TO_USEC;
qDebug("usleep(1) ms: %f", elapsedUsecs / 1000.0f);
startTime.start();
usleep(10);
elapsedUsecs = (float)startTime.nsecsElapsed() * NSEC_TO_USEC;
qDebug("usleep(10) ms: %f", elapsedUsecs / 1000.0f);
startTime.start();
usleep(100);
elapsedUsecs = (float)startTime.nsecsElapsed() * NSEC_TO_USEC;
qDebug("usleep(100) ms: %f", elapsedUsecs / 1000.0f);
startTime.start();
usleep(1000);
elapsedUsecs = (float)startTime.nsecsElapsed() * NSEC_TO_USEC;
qDebug("usleep(1000) ms: %f", elapsedUsecs / 1000.0f);
startTime.start();
usleep(15000);
elapsedUsecs = (float)startTime.nsecsElapsed() * NSEC_TO_USEC;
qDebug("usleep(15000) ms: %f", elapsedUsecs / 1000.0f);
// Random number generation
startTime.start();
for (int i = 0; i < numTests; i++) {