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    SubjectRe: SMP locks up when NFS times out
    Just to follow up to my own problem.

    I should have pointed out that my NFS mounts were with rsize=4096 and
    wsize=4096. Without that my NFS speed is horrifically slow. An 8MB
    file takes about 25s to read. With the 4k parameters that goes down to
    about 8.6s (on an unloaded ethernet). I get these bad speeds with both
    3c509 and 3c590. Note that our NetworkAppliance fileserver uses 4k
    blocks, so this might be a factor. Maybe this should be a separate
    thread. Should I expect decent NFS performance with NFS 1k?

    OK. If I mount NFS with the default 1k packet sizes, Linux SMP does not
    lock up on me!!! This sounds like a big clue to the problem.

    So, could some of you out there try my crash method (pulling the
    ethernet wire during a big NFS read) after mounting with rsize=4096 and
    wsize=4096? I'll bet you'll lock up Linux SMP!

    Lee Hetherington

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      Last update: 2005-03-22 13:37    [W:0.020 / U:10.164 seconds]
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