On 12/18/2007 02:45 PM, James Nichols wrote: > > I've run tcpdump for all IPs during this problem. I haven't tried > doing it for a single explicit IP address- due to the nature of the > workload it's very difficult to know which IPs will be hit at any > given moment. What I did see in the full IP captures is that the > returning ACKs don't show up in the packet capture. Unfortunately, > tcpdump reported that some packets were dropped during the capture. > Is it possible that the kernel was dropping the packets before they > could be captured by tcpdump? > The only way to get a reliable trace is to run a capture from a port mirror on the switch the server is connected to. Capturing from inside the server at the same time and comparing the traces could be useful. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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