Hi all, writing to both netdev and IrDA since I don't know where the problem occurs. More likely in IrDA, but maybe someone from netdev will have debugging ideas.
System: PXA270 ARM CPU Kernel: 2.6.20.1-rt8 (realtime preemption) Test case: small UDP-packet request-response test over ppp on irnet. Problem: after some time the tx_queue value in /proc/net/udp for this socket on the active (request) side becomes large and the communication stops. Whereas background (ppp) IrDA communication runs further, new connections are possible. Moreover, the frozen communication can be thawed, e.g., if I dump task states per sysrq-t IrDA first reports "no activity", but the communication afterwards runs further. Without such a kick it hangs indefinitely (days). I think, also just starting a parallel ping thaws the socket too. It is hard to reproduce - occurs only after several hours of testing (once a day). So, does anyone have an idea what the reason can be or at least how can I debug it? Does it look like a leak again? Nothing suspicious in slabinfo. The number in tx_queue doesn't grow gradually - most of the time it's 0. Thanks Guennadi --------------------------------- Guennadi Liakhovetski, Ph.D. DSA Daten- und Systemtechnik GmbH Pascalstr. 28 D-52076 Aachen Germany - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
