QModbusTCPClient Problem

I start a new modbus tcp connection in a QThread. I keep the connection all the time, and I found the memory in the heap of QModbusTcpClientPrivate::equeueRequest is group up soon.

I follow the souce code,then I found the "new" place is  <<q->connect(q, &QModbusClient::timeoutChanged,
element.timer.data(), QOverload<int>::of(&QTimer::setInterval));>>.

connect funcion new slotObj one by one。 

how can I do to deal with the problem?

Thanks for replying my question.

The Example code is upload now