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Date:      Thu, 27 Nov 2008 03:07:25 +0800
From:      "Lin Jui-Nan Eric" <ericlin@tamama.org>
To:        "Claus Guttesen" <kometen@gmail.com>
Cc:        stable@freebsd.org
Subject:   Re: NFS Performance Issue
Message-ID:  <47713ee10811261107r956aa8ag2340c92f3e820bcc@mail.gmail.com>
In-Reply-To: <b41c75520811261029l14d0d8cbk891b4abdf12fb8ae@mail.gmail.com>
References:  <47713ee10811260821taf548aapceb210a3bc7314ea@mail.gmail.com> <b41c75520811261029l14d0d8cbk891b4abdf12fb8ae@mail.gmail.com>

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On Thu, Nov 27, 2008 at 2:29 AM, Claus Guttesen <kometen@gmail.com> wrote:
>> We recently found that the Performance of the NFS Client in FreeBSD is
>> worse than that in Linux.
>
> What OS is your nfs-server running?
Our NFS server is NetApp.
>
> You can ommit read- and write-size using tcp-mounts. From 'man mount_nfs':
>
>     -w      Set the write data size to the specified value.  Ditto the com-
>             ments w.r.t. the -r option, but using the ``fragments dropped due
>             to timeout'' value on the server instead of the client.  Note
>             that both the -r and -w options should only be used as a last
>             ditch effort at improving performance when mounting servers that
>             do not support TCP mounts.
>
> I have a solaris 9 nfs-server with vxfs and I used to mount using udp
> but then I ran into 'server not responding' and changed to
> tcp-nfs-mount instead. I just copied a 200 MB file to the nfs-server
> in 7.5 sec. which is 26.6 MB/s.
>
I'm trying to mount without read- and write-size now. Thank you!



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