5.2.1 + snort, dropping packets

From: Sergey Lyubka (devnull_at_uptsoft.com)
Date: 05/24/04

  • Next message: Mark Linimon: "Re: lang/ezm3 "runtime error: Segmentation violation...""
    Date: Mon, 24 May 2004 13:01:14 +0300
    To: freebsd-hackers@freebsd.org
    
    

    hackers,
    I am running snort on 5.2.1-RELEASE, and I am getting high
    dropped packets rate. traffic is quiet, about 1kpps, the box runs on xeon
    processor, intel gigabit NICs (em driver), system load is low:

    CPU states: 1.9% user, 5.1% nice, 1.6% system, 4.7% interrupt, 86.8% idle
    Mem: 121M Active, 97M Inact, 75M Wired, 736K Cache, 60M Buf, 201M Free
    Swap: 512M Total, 512M Free

    I have tried:
            o both SMP and UP kernels
            o both SCHED_ULE and SCHED_4BSD options
            o libpcap libs versions 0.7 and 0.8.3
            o 5.2.1-RELEASE and -current kernels
            o DEVICE_POLLING option
            o sysctl debug.bpf_bufsize set to maximum of 524288

    and still having dropped packets.
    I am having a much lower spec box, running obsd 3.2, same snort configuration,
    capturing the same traffic. obsd shows constant 0 dropped packets.

    How would I fix that problem?

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  • Next message: Mark Linimon: "Re: lang/ezm3 "runtime error: Segmentation violation...""

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