>> as i mentioned in my previous mail, (with the title: "HUGE packet-drop") i'm >> having problem trying to dump gigabit traffic on harddisk with tcpdump on >> Debian5.0. i tried almost everything but got no success. so, i decided to >> start-over: >> >> *) if anyone has experience on successful gigabit capture, what combination of >> "Operating-System / Distribution / Kernel Version / libpcap version / ..." do >> you suggest for maximum zero-packet-loss capture?
> What are you going to do with the packets? > Can you process the packets that you capture with few enough > CPU cycles that you never cause backlog? hi, right now, no (extra) process is being done on packets. tcpdump (or dumpcap) simply dumps received packets (whole packet, with s = 0) into file(s). my HP server's HDD performance is good, and i also tried dumping on SSD and RAMDisk and i increased kernel buffer-sizes, but my best zero-packet-loss result is something about 350Mbps (this result is with libpcap-0.9.8. i got much worse results with libpcap-1.0+). - This is the tcpdump-workers list. Visit https://cod.sandelman.ca/ to unsubscribe.