Thanks for replying on this, as I am actually helpless on this issue for days now.
As you're saying "libpcap" rather than WinPcap, I'm assuming this is some > flavor of UN*X, such as Linux. > > You are right, its running 2.6.32 on OpenWrt. > Could you build a profiled version of your tool (compile with "-pg") and > then run gprof on the tool and the gmon.out file it produces when it exits? > That should show you *where* the CPU time is being spent. > > This means that the program has to eventually exit cleanly - you can't > interrupt it with, for example, ^C unless it catches SIGINT and exits, > otherwise it'll fail to write out the gmon.out file. > > This might also be tricky if you cross-compile the tool to run on the > router, and the router doesn't have gprof installed - you might have to > have a version of gprof capable of analyzing executable files and gmon.out > files from the router. This is the trickiest part, as I haven't found profiling tools for OpenWrt. I am curious to know if tcpdump does something interesting to deal with such situation (I dint find anything when I last read the code..couple of months back) Am I right to say that the two processes spin on some shared resource ? - Abhinav _______________________________________________ tcpdump-workers mailing list tcpdump-workers@lists.tcpdump.org https://lists.sandelman.ca/mailman/listinfo/tcpdump-workers
