Re: High traffic NFS performance and availability problems

From: Aaron Glenn (aaron.glenn_at_gmail.com)
Date: 02/18/05

  • Next message: Eric Anderson: "Re: High traffic NFS performance and availability problems" 
    Date: Fri, 18 Feb 2005 03:07:15 -0800
To: David Rice <drice@globat.com>

    On Thu, 17 Feb 2005 16:36:10 -0800, David Rice <drice@globat.com> wrote:
    > The problems we are having is as follows.
    >
    > 1. Slow perfomance during peek traffic periods
    > 2. Client boxes have high load averages and sometimes crashes due to slow NFS
    > performance.
    > 3. File servers that randomly crash with "Fatal trap 12: page fault while in
    > kernel mode"
    > 4. With soft updates enabled during FSCK the fileserver will freeze with all
    > NFS processs in the "snaplck" state. We disabled soft updates because of
    > this.
    >
    > I can provide and other details about our configuration if needed.
    >
    > David Rice
    > drice@globat.com
    >
    > Thank You

    Just how many MB/s are you pushing during peak periods? How are the
    file servers connected to the clients? What have you looked it with
    vmstat? Why did you move to 5.x on your file servers? Are you tracking
    -STABLE on those, or just -RELEASE? By the way they're Xeon's - not
    Xenon's (-:

    aaron.glenn
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