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    SubjectRe: NFS client performance 1.5 orders of magnitude too slow? (fwd)
    On Tue, Mar 09, 1999 at 01:51:30PM -0700, Godmar Back wrote:

    > However, the default wsize may be an issue for large files.
    > I reported that FreeBSD 3.0 takes 6 seconds to write a 12 MB
    > file where Linux 2.2.3 with wsize=4k takes 14 seconds.
    > (Btw, FreeBSD 2.2.8 takes only 2.5 seconds for the same file.)
    > So I tested the Linux client with wsize=8k; it is still a lot slower.
    > A Linux 2.2.3 client with wsize=8k takes about 30 seconds to write
    > a 12 MB file (this is with a different server), while a BSD client takes
    > about 18 seconds with the same server.

    Here, using autofs (client : 2.2.2-ac7, server : 2.0.32/unfsd),
    I have :

    [pcodile]/alienor/home/danis/tmp > time cp /tmp/linux-2.2.2.tar.gz .
    0.00user 1.77system 0:03.20elapsed 55%CPU (0avgtext+0avgdata 0maxresident)k
    0inputs+0outputs (3322major+14minor)pagefaults 0swaps

    That is, 3 secondes to copy a 12M files over a 100Mb link
    using an 'old' userland nfs server.

    The mount options is :

    alienor:/home on /alienor/home type nfs (rw,nolock,soft,intr,rsize=8192,wsize=8192,addr=<something>)


    > - Godmar

    Thierry Danis

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