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Merge pull request #2497 from birarda/avatar-debug

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separate broadcast method to sep thread in AvatarMixer
This commit is contained in:
Philip Rosedale 2014-03-25 15:18:28 -07:00
commit 746630b378
3 changed files with 74 additions and 90 deletions
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153
assignment-client/src/avatars/AvatarMixer.cpp
View file

@ -14,6 +14,7 @@
#include <QtCore/QDateTime>
#include <QtCore/QJsonObject>
#include <QtCore/QTimer>
#include <QtCore/QThread>
#include <Logging.h>
#include <NodeList.h>
@ -27,7 +28,7 @@
const QString AVATAR_MIXER_LOGGING_NAME = "avatar-mixer";
const unsigned int AVATAR_DATA_SEND_INTERVAL_USECS = (1 / 60.0) * 1000 * 1000;
const unsigned int AVATAR_DATA_SEND_INTERVAL_MSECS = (1.0f / 60.0f) * 1000;
AvatarMixer::AvatarMixer(const QByteArray& packet) :
ThreadedAssignment(packet),
@ -54,11 +55,59 @@ const float BILLBOARD_AND_IDENTITY_SEND_PROBABILITY = 1.0f / 300.0f;
// NOTE: some additional optimizations to consider.
// 1) use the view frustum to cull those avatars that are out of view. Since avatar data doesn't need to be present
// if the avatar is not in view or in the keyhole.
// 2) after culling for view frustum, sort order the avatars by distance, send the closest ones first.
// 3) if we need to rate limit the amount of data we send, we can use a distance weighted "semi-random" function to
// determine which avatars are included in the packet stream
// 4) we should optimize the avatar data format to be more compact (100 bytes is pretty wasteful).
void AvatarMixer::broadcastAvatarData() {
int idleTime = QDateTime::currentMSecsSinceEpoch() - _lastFrameTimestamp;
++_numStatFrames;
const float STRUGGLE_TRIGGER_SLEEP_PERCENTAGE_THRESHOLD = 0.10f;
const float BACK_OFF_TRIGGER_SLEEP_PERCENTAGE_THRESHOLD = 0.20f;
const float RATIO_BACK_OFF = 0.02f;
const int TRAILING_AVERAGE_FRAMES = 100;
int framesSinceCutoffEvent = TRAILING_AVERAGE_FRAMES;
const float CURRENT_FRAME_RATIO = 1.0f / TRAILING_AVERAGE_FRAMES;
const float PREVIOUS_FRAMES_RATIO = 1.0f - CURRENT_FRAME_RATIO;
_trailingSleepRatio = (PREVIOUS_FRAMES_RATIO * _trailingSleepRatio)
+ (idleTime * CURRENT_FRAME_RATIO / (float) AVATAR_DATA_SEND_INTERVAL_MSECS);
float lastCutoffRatio = _performanceThrottlingRatio;
bool hasRatioChanged = false;
if (framesSinceCutoffEvent >= TRAILING_AVERAGE_FRAMES) {
if (_trailingSleepRatio <= STRUGGLE_TRIGGER_SLEEP_PERCENTAGE_THRESHOLD) {
// we're struggling - change our min required loudness to reduce some load
_performanceThrottlingRatio = _performanceThrottlingRatio + (0.5f * (1.0f - _performanceThrottlingRatio));
qDebug() << "Mixer is struggling, sleeping" << _trailingSleepRatio * 100 << "% of frame time. Old cutoff was"
<< lastCutoffRatio << "and is now" << _performanceThrottlingRatio;
hasRatioChanged = true;
} else if (_trailingSleepRatio >= BACK_OFF_TRIGGER_SLEEP_PERCENTAGE_THRESHOLD && _performanceThrottlingRatio != 0) {
// we've recovered and can back off the required loudness
_performanceThrottlingRatio = _performanceThrottlingRatio - RATIO_BACK_OFF;
if (_performanceThrottlingRatio < 0) {
_performanceThrottlingRatio = 0;
}
qDebug() << "Mixer is recovering, sleeping" << _trailingSleepRatio * 100 << "% of frame time. Old cutoff was"
<< lastCutoffRatio << "and is now" << _performanceThrottlingRatio;
hasRatioChanged = true;
}
if (hasRatioChanged) {
framesSinceCutoffEvent = 0;
}
}
if (!hasRatioChanged) {
++framesSinceCutoffEvent;
}
static QByteArray mixedAvatarByteArray;
int numPacketHeaderBytes = populatePacketHeader(mixedAvatarByteArray, PacketTypeBulkAvatarData);
@ -84,13 +133,9 @@ void AvatarMixer::broadcastAvatarData() {
AvatarMixerClientData* otherNodeData = reinterpret_cast<AvatarMixerClientData*>(otherNode->getLinkedData());
AvatarData& otherAvatar = otherNodeData->getAvatar();
glm::vec3 otherPosition = otherAvatar.getPosition();
float distanceToAvatar = glm::length(myPosition - otherPosition);
// The full rate distance is the distance at which EVERY update will be sent for this avatar
// at a distance of twice the full rate distance, there will be a 50% chance of sending this avatar's update
const float FULL_RATE_DISTANCE = 2.f;
// Decide whether to send this avatar's data based on it's distance from us
if ((distanceToAvatar == 0.f) || (randFloat() < FULL_RATE_DISTANCE / distanceToAvatar)
* (1 - _performanceThrottlingRatio)) {
// Decide whether to send this avatar's data based on current performance throttling
if (_performanceThrottlingRatio == 0 || randFloat() < (1.0f - _performanceThrottlingRatio)) {
QByteArray avatarByteArray;
avatarByteArray.append(otherNode->getUUID().toRfc4122());
avatarByteArray.append(otherAvatar.toByteArray());
@ -248,80 +293,18 @@ void AvatarMixer::run() {
nodeList->linkedDataCreateCallback = attachAvatarDataToNode;
int nextFrame = 0;
timeval startTime;
// create a thead for broadcast of avatar data
QThread* broadcastThread = new QThread(this);
gettimeofday(&startTime, NULL);
// setup the timer that will be fired on the broadcast thread
QTimer* broadcastTimer = new QTimer();
broadcastTimer->setInterval(AVATAR_DATA_SEND_INTERVAL_MSECS);
broadcastTimer->moveToThread(broadcastThread);
int usecToSleep = AVATAR_DATA_SEND_INTERVAL_USECS;
// connect appropriate signals and slots
connect(broadcastTimer, &QTimer::timeout, this, &AvatarMixer::broadcastAvatarData, Qt::DirectConnection);
connect(broadcastThread, SIGNAL(started()), broadcastTimer, SLOT(start()));
const int TRAILING_AVERAGE_FRAMES = 100;
int framesSinceCutoffEvent = TRAILING_AVERAGE_FRAMES;
while (!_isFinished) {
++_numStatFrames;
const float STRUGGLE_TRIGGER_SLEEP_PERCENTAGE_THRESHOLD = 0.10f;
const float BACK_OFF_TRIGGER_SLEEP_PERCENTAGE_THRESHOLD = 0.20f;
const float RATIO_BACK_OFF = 0.02f;
const float CURRENT_FRAME_RATIO = 1.0f / TRAILING_AVERAGE_FRAMES;
const float PREVIOUS_FRAMES_RATIO = 1.0f - CURRENT_FRAME_RATIO;
if (usecToSleep < 0) {
usecToSleep = 0;
}
_trailingSleepRatio = (PREVIOUS_FRAMES_RATIO * _trailingSleepRatio)
+ (usecToSleep * CURRENT_FRAME_RATIO / (float) AVATAR_DATA_SEND_INTERVAL_USECS);
float lastCutoffRatio = _performanceThrottlingRatio;
bool hasRatioChanged = false;
if (framesSinceCutoffEvent >= TRAILING_AVERAGE_FRAMES) {
if (_trailingSleepRatio <= STRUGGLE_TRIGGER_SLEEP_PERCENTAGE_THRESHOLD) {
// we're struggling - change our min required loudness to reduce some load
_performanceThrottlingRatio = _performanceThrottlingRatio + (0.5f * (1.0f - _performanceThrottlingRatio));
qDebug() << "Mixer is struggling, sleeping" << _trailingSleepRatio * 100 << "% of frame time. Old cutoff was"
<< lastCutoffRatio << "and is now" << _performanceThrottlingRatio;
hasRatioChanged = true;
} else if (_trailingSleepRatio >= BACK_OFF_TRIGGER_SLEEP_PERCENTAGE_THRESHOLD && _performanceThrottlingRatio != 0) {
// we've recovered and can back off the required loudness
_performanceThrottlingRatio = _performanceThrottlingRatio - RATIO_BACK_OFF;
if (_performanceThrottlingRatio < 0) {
_performanceThrottlingRatio = 0;
}
qDebug() << "Mixer is recovering, sleeping" << _trailingSleepRatio * 100 << "% of frame time. Old cutoff was"
<< lastCutoffRatio << "and is now" << _performanceThrottlingRatio;
hasRatioChanged = true;
}
if (hasRatioChanged) {
framesSinceCutoffEvent = 0;
}
}
if (!hasRatioChanged) {
++framesSinceCutoffEvent;
}
broadcastAvatarData();
QCoreApplication::processEvents();
if (_isFinished) {
break;
}
usecToSleep = usecTimestamp(&startTime) + (++nextFrame * AVATAR_DATA_SEND_INTERVAL_USECS) - usecTimestampNow();
if (usecToSleep > 0) {
usleep(usecToSleep);
}
}
// start the broadcastThread
broadcastThread->start();
}

7
libraries/shared/src/NodeList.cpp
View file

@ -171,8 +171,13 @@ qint64 NodeList::writeDatagram(const QByteArray& datagram, const HifiSockAddr& d
++_numCollectedPackets;
_numCollectedBytes += datagram.size();
return _nodeSocket.writeDatagram(datagramCopy, destinationSockAddr.getAddress(), destinationSockAddr.getPort());
qint64 bytesWritten = _nodeSocket.writeDatagram(datagramCopy, destinationSockAddr.getAddress(), destinationSockAddr.getPort());
if (bytesWritten < 0) {
qDebug() << "ERROR in writeDatagram:" << _nodeSocket.error() << "-" << _nodeSocket.errorString();
}
return bytesWritten;
}
qint64 NodeList::writeDatagram(const QByteArray& datagram, const SharedNodePointer& destinationNode,

4
libraries/shared/src/ThreadedAssignment.cpp
View file

@ -46,10 +46,6 @@ void ThreadedAssignment::commonInit(const QString& targetName, NodeType_t nodeTy
connect(domainServerTimer, SIGNAL(timeout()), this, SLOT(checkInWithDomainServerOrExit()));
domainServerTimer->start(DOMAIN_SERVER_CHECK_IN_USECS / 1000);
QTimer* pingNodesTimer = new QTimer(this);
connect(pingNodesTimer, SIGNAL(timeout()), nodeList, SLOT(pingInactiveNodes()));
pingNodesTimer->start(PING_INACTIVE_NODE_INTERVAL_USECS / 1000);
QTimer* silentNodeRemovalTimer = new QTimer(this);
connect(silentNodeRemovalTimer, SIGNAL(timeout()), nodeList, SLOT(removeSilentNodes()));
silentNodeRemovalTimer->start(NODE_SILENCE_THRESHOLD_USECS / 1000);