Samba performance on ChallengeS

From: Bjorn Ljungdahl (bjorn.ljungdahl_at_telia.nospam.com)
Date: 03/27/04

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    Date: 27 Mar 2004 08:42:05 -0600

    Hi,

    I just installed and tested Samba 2.2.8a.2 on my ChallengeS
    server and I was a bit dissapointed of the performance.
    I have a Phobos G130 in it connected to PC network via
    a Netgear switch and expected more from it.
    According to GFEControl I have full duplex and forced
    100MBit and my switch indicates the same.

    Copying 800Mb file from PC to W2K server (PII/250MHz)
    gives approx 7MB/s. Copying same file from PC to Samba
    gives approx 4MB/s.
    I get same result when copying to Challenge internal narrow
    device as to external striped 2x9Gb wide HVD disks.
    CPU load is about 35% when copying.

    ftp ftom PC to Challenge - - approx 4MB/s
    Although from the 'speedometer' I can see it starts out
    at approx 5MB/s and gradually slows down to 4MB/s
    Why's that?

    nfs sfu from PC server to Octane - approx 7MB/s
    ttcp to/from Octane from/to Challenge - approx 6.5MB/s
    nfs sfu from PC server to Challenge - approx 4MB/s (?)
    ftp from Octane to Challenge - approx 4MB/s

    Machine is ChallengeS, R5K@180, 256Mb, IRIX6.5.21m
    PC is P4@1800 W2K

    Is there any way to speed up Samba?
    Is Samba based on ftp and it's better if I get a program
    so I can mount NFS disks on the PC instead?

    /Bjorn

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