Re: NFS slow or fast?

From: Froy Oxciano (foxciano@gensourcecorp.com)
Date: 04/23/03

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    From: foxciano@gensourcecorp.com (Froy Oxciano)
Date: 23 Apr 2003 09:22:34 -0700

    "Hans-Joachim Ehlers" <service@metamodul.com> wrote in message news:<b85lob$h7b2@news-1.bank.dresdner.net>...
    > "Froy Oxciano" <foxciano@gensourcecorp.com> schrieb im Newsbeitrag
    > news:49e12c75.0304221715.463f15c5@posting.google.com...
    > > We have two 7026-6H1 machines, 2-way 600Mhz procs, 4GB of RAM and each
    > > has a 1GB ethernet card connected to each other directly by cross-over
    > > cable. NFS is setup using Version 3 and tcp. It takes 3 hours to copy
    > > 30GB of data through NFS (scheduled every night). Is this fast or
    > > slow? I suspect it should be faster. What settings can I change to
    >
    > Its about 2.7 MBytes/sec. Pretty slow
    >
    > > make the copies go fast? NFSO settings? IFCONFIG changes? NO changes?
    > > Is it the NFS server that needs to be changed? or the NFS client? Any
    > > feedback would be greatly appreciated.
    >
    > How fast is your disk subsystem ?
    > Do you have high wait/io during the nfs copy
    > Do you transfer a few large files or many small files ?
    >
    The disk subsystem is a 7133-D40. The disks are on a SSA RAID5
    configuration. There are 6 - 36.4 SSA160 disks on each server.
    During the copies the io/wait is at 20%. We mostly copy database
    files, so it's a mix of many small files and a few large files.

    > For trouble shooting:
    > Try your network connection with ftp. ( assuming your disk speed is higher
    > then 3MBytes/sec) in BOTH directions a few times.
    > If you get the same speed you should have a physical network
    > misconfiguration
    >
    > HTH
    > Hajo
    > CATE/AIX

  • Next message: rolando: "How to delete a duplicate routing entry?"

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