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Use max of --max & --n for resources; other clean-up

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This commit is contained in:
Simon Walton 2018-07-17 14:39:21 -07:00
parent 7181c3ad48
commit 06d1602c0d
1 changed files with 6 additions and 2 deletions
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8
assignment-client/src/AssignmentClientMonitor.cpp
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@ -74,7 +74,7 @@ AssignmentClientMonitor::AssignmentClientMonitor(const unsigned int numAssignmen
auto& packetReceiver = DependencyManager::get<NodeList>()->getPacketReceiver(); auto& packetReceiver = DependencyManager::get<NodeList>()->getPacketReceiver();
packetReceiver.registerListener(PacketType::AssignmentClientStatus, this, "handleChildStatusPacket"); packetReceiver.registerListener(PacketType::AssignmentClientStatus, this, "handleChildStatusPacket");
adjustOsResources(_numAssignmentClientForks); adjustOsResources(std::max(_numAssignmentClientForks, _maxAssignmentClientForks));
// use QProcess to fork off a process for each of the child assignment clients // use QProcess to fork off a process for each of the child assignment clients
for (unsigned int i = 0; i < _numAssignmentClientForks; i++) { for (unsigned int i = 0; i < _numAssignmentClientForks; i++) {
spawnChildClient(); spawnChildClient();
@ -380,7 +380,8 @@ bool AssignmentClientMonitor::handleHTTPRequest(HTTPConnection* connection, cons
void AssignmentClientMonitor::adjustOsResources(unsigned int numForks) const void AssignmentClientMonitor::adjustOsResources(unsigned int numForks) const
{ {
#ifdef _POSIX_SOURCE #ifdef _POSIX_SOURCE
// QProcess on Unix uses six descriptors, some temporarily, for each child proc. // QProcess on Unix uses six (I think) descriptors, some temporarily, for each child proc.
// Formula based on tests with a Ubuntu 16.04 VM.
unsigned requiredDescriptors = 30 + 6 * numForks; unsigned requiredDescriptors = 30 + 6 * numForks;
struct rlimit descLimits; struct rlimit descLimits;
if (getrlimit(RLIMIT_NOFILE, &descLimits) == 0) { if (getrlimit(RLIMIT_NOFILE, &descLimits) == 0) {
@ -393,6 +394,9 @@ void AssignmentClientMonitor::adjustOsResources(unsigned int numForks) const
qDebug() << "Failed to reset descriptor limit to" << requiredDescriptors << ":" << errorString; qDebug() << "Failed to reset descriptor limit to" << requiredDescriptors << ":" << errorString;
} }
} }
} else {
const char *const errorString = strerror(errno);
qDebug() << "Failed to read descriptor limit:" << errorString;
} }
#endif #endif
} }