tcpdump mailing list archives
Multi process sniffing and dropped packets
From: <computational_complex-forthespam () yahoo it>
Date: Fri, 13 Jan 2006 00:11:20 +0100 (CET)
Hi people! I'm writing a sniffer with libpcap 0.9.3 that gets packets and makes some cpu-intensive work with those. I want to use a multi process architecture (rather than a multi thread one) because i want to distribute work on multiple processor; so i thought two way to do this: - every process executes an infinite loop in which pcap_next() is called. - every process executes a pcap_loop() call. BUT..is pcap library able to manage safety multi process (or maybe multi thread) calls with the same pcap_t handle in each process ? Any suggestion? Anyway, i would like to know how ps_drop in struct pcap_stat is calculated; is this the number of packets that the network card drops? Or does it count pcap library dropped packets? If it's in the latter case, why the lib drops packets? Is there a buffer full? Can i enlarge this buffer? Thanks to everyone. Valerio - This is the tcpdump-workers list. Visit https://lists.sandelman.ca/ to unsubscribe.
Current thread:
- Multi process sniffing and dropped packets computational_complex-forthespam (Jan 12)
- Re: Multi process sniffing and dropped packets Gianluca Varenni (Jan 12)
- Re: Multi process sniffing and dropped packets Guy Harris (Jan 12)
- Re: Multi process sniffing and dropped packets Gianluca Varenni (Jan 13)
- Re: Multi process sniffing and dropped packets Robert Lowe (Jan 12)
- Re: Multi process sniffing and dropped packets computational_complex-forthespam (Jan 14)
- Re: Multi process sniffing and dropped packets Rick Jones (Jan 17)
- Re: Multi process sniffing and dropped packets computational_complex-forthespam (Jan 21)
- Re: Multi process sniffing and dropped packets Guy Harris (Jan 12)
- Re: Multi process sniffing and dropped packets Gianluca Varenni (Jan 12)
- Re: Multi process sniffing and dropped packets Michael Richardson (Jan 12)
- Re: Multi process sniffing and dropped packets Guy Harris (Jan 12)
- Re: Multi process sniffing and dropped packets Guy Harris (Jan 12)