> ...that the first thing I'd do is run top to see what processes are chewing > up the CPU, and if tcpdump is chewing up a significant amount of CPU time, > possibly also run strace (you say "-i any", so this is presumably Linux, and > your email address further supports that; thus, strace should be available, > at least if you install it) against tcpdump to see if it's doing anything > that involves system calls and what they are. > > Unfortunately, both of those involve top or strace using the CPU, so they'd > have to compete with whatever's burning up the processor. Hello Guy,
it 's the linux, yes, x86_64 centos5 based, 2.6.32.x kernel. I don't think CPUs are too loaded, I'll try to check it again today though (it's production machine, so I can do such tests only during night... here's the strace: 09:48:15.982305 setsockopt(3, SOL_PACKET, PACKET_RX_RING, "\0\0\2\0\37\0\0\0@\0\1\0\37\0\0\0", 16) = 0 <15.531056> ^^^ here it hangs 09:48:32.050796 mmap(NULL, 4063232, PROT_READ|PROT_WRITE, MAP_SHARED, 3, 0) = 0x7fdd92457000 <0.000298> will it help somehow? n. -- ------------------------------------- Ing. Nikola CIPRICH LinuxBox.cz, s.r.o. 28. rijna 168, 709 01 Ostrava tel.: +420 596 603 142 fax: +420 596 621 273 mobil: +420 777 093 799 www.linuxbox.cz mobil servis: +420 737 238 656 email servis: [email protected] -------------------------------------
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