Test code (pretty much stripped down version of example):
int main(int argc, char* argv[] ) {
activemq::library::ActiveMQCPP::initializeLibrary();
{
Connection* connection;
std::cout << "=====================================================\n";
std::cout << "Starting the initialized:" << std::endl;
std::cout << "-----------------------------------------------------\n";
std::string brokerURI =
"failover:(tcp://localhost:61616"
// "?wireFormat=openwire"
// "&transport.useInactivityMonitor=false"
// "&connection.alwaysSyncSend=true"
// "&connection.useAsyncSend=true"
// "?transport.commandTracingEnabled=true"
// "&transport.tcpTracingEnabled=true"
// "&wireFormat.tightEncodingEnabled=true"
")";
std::cout << "connect...:" << std::endl;
try {
// Create a ConnectionFactory
auto_ptr<ConnectionFactory> connectionFactory(
ConnectionFactory::createCMSConnectionFactory(brokerURI));
// Create a Connection
connection = connectionFactory->createConnection();
// connection->start();
} catch (CMSException& e) {
e.printStackTrace();
}
std::cout << "connected...:" << std::endl;
sleep(10);
std::cout << "cleanup...:" << std::endl;
if (connection != NULL) {
try {
connection->close();
} catch (cms::CMSException& ex) {
ex.printStackTrace();
}
}
// Destroy resources.
try {
delete connection;
connection = NULL;
} catch (CMSException& e) {
e.printStackTrace();
}
std::cout << "-----------------------------------------------------\n";
std::cout << "Finished with the example." << std::endl;
std::cout << "=====================================================\n";
}
activemq::library::ActiveMQCPP::shutdownLibrary();
}
Looking at the memory usage in "top"
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
6413 root 20 0 *498m* 5360 3848 S 0.0 0.3 0:00.00 test
VIRT memory jumps to nearly 500MB! Why? Is there something that can be done
to keep this memory about the same as RES portion (which is about 5K and is
probably appropriate for a program that does nothing, like the one above).
If I comment out
connection = connectionFactory->createConnection();
memory drops down to acceptable levels (like 50K).
Memory is a constraint for me and this behavior seems wrong. As a comparison
sshd runs happily with <100K of VIRT memory.... ActiveMQ-CPP should too -
right?
--
View this message in context:
http://activemq.2283324.n4.nabble.com/Memory-Usage-of-activeMQ-CPP-tp4664276.html
Sent from the ActiveMQ - User mailing list archive at Nabble.com.
