Re: Very low bandwidth when using knfsd

From: Christoph Brauckmann (C.Brauckmann@alcatel.de)
Date: Fri Feb 04 2000 - 10:20:55 EST

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    Hello

    Sorry for the delay in proceeding the discussion. I am back since 3
    weeks, but I did not have the time to resume this evaluation.

    I mentioned that my system administrator asserted, that ping uses TCP.
    But that was not true. I misunderstood him. Additionally I said, that my
    ping returns only "MyLaptop is alive". That was the case, because I
    translated only those ping arguments to the Solaris version, which were
    used in the command line sent by Neil Brown. Thus I had tried only the
    command "ping MyLaptop 8192 10". But now I can give you the correct
    output (with the "-s"):

    Christoph: ping -s MyLaptop 8192 10
    PING MyLaptop: 8192 data bytes
    8200 bytes from MyLaptop (192.168.0.1): icmp_seq=0. time=22. ms
    8200 bytes from MyLaptop (192.168.0.1): icmp_seq=1. time=22. ms
    8200 bytes from MyLaptop (192.168.0.1): icmp_seq=7. time=24. ms
    8200 bytes from MyLaptop (192.168.0.1): icmp_seq=8. time=77. ms

    ----MyLaptop PING Statistics----
    10 packets transmitted, 4 packets received, 60% packet loss
    round-trip (ms) min/avg/max = 22/36/77
    Christoph: ping -s MyLaptop 8192 10
    PING MyLaptop: 8192 data bytes
    8200 bytes from MyLaptop (192.168.0.1): icmp_seq=0. time=29. ms
    8200 bytes from MyLaptop (192.168.0.1): icmp_seq=3. time=123. ms
    8200 bytes from MyLaptop (192.168.0.1): icmp_seq=4. time=36. ms
    8200 bytes from MyLaptop (192.168.0.1): icmp_seq=5. time=23. ms
    8200 bytes from MyLaptop (192.168.0.1): icmp_seq=8. time=60. ms

    ----MyLaptop PING Statistics----
    10 packets transmitted, 5 packets received, 50% packet loss
    round-trip (ms) min/avg/max = 23/54/123
    Christoph:

    So, there seems to be a network problem (50-60% loss).

    Currently I do not have root access to the Solaris machine, thus I
    cannot play around with the mount options. But I requested a temporary
    root access, and I think I will get it in the next weeks. Then I will
    report again.

    -- 
    Kind regards,
    

    Christoph Brauckmann

    _/ ALCATEL Christoph Brauckmann _/_/ Telecom Project - Manager _/ _/ _/ _/ Microelectronic Dept.: VS/EHD1 _/ _/ Center Tel. : +49 711 821-40485 _/ _/ Lorenzstr.10 Fax : +49 711 821-45571 _/_/_/_/_/_/_/ 70435 Stuttgart Email: C.Brauckmann@alcatel.de

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