Do you guys have any suggested kernel tuning parameters for a nfs v3
linux client? My server is an hp/ux fileserver.
Thanks,
Brent Clements
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We have a linux server running 2.4.20 plus it has nfsv3 udp/tcp server
support compiled in.
We have a linux client running 2.4.20 plus it has nfsv3 udp/tcp client
support compiled.
If we specify a read/write size above 8192 on the client, and then mount
the nfs directory. It gives us the following on /proc/mounts
cluster:/usr/local/ /tmp/d nfs
rw,v3,rsize=8192,wsize=8192,hard,udp,lock,addr=cluster 0 0
Do we have to edit something in a kernel include file to allow NFSV3 to
mount above 8k?
Thanks,
Brent
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I believe your running UDP.
Try running it over TCP, and see what you get...
Dan
On Wednesday, March 12, 2003, at 03:55 PM, [email protected] wrote:
> We have a linux server running 2.4.20 plus it has nfsv3 udp/tcp server
> support compiled in.
>
> We have a linux client running 2.4.20 plus it has nfsv3 udp/tcp client
> support compiled.
>
>
> If we specify a read/write size above 8192 on the client, and then
> mount
> the nfs directory. It gives us the following on /proc/mounts
>
>
> cluster:/usr/local/ /tmp/d nfs
> rw,v3,rsize=8192,wsize=8192,hard,udp,lock,addr=cluster 0 0
>
> Do we have to edit something in a kernel include file to allow NFSV3 to
> mount above 8k?
>
> Thanks,
> Brent
>
>
>
>
>
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>>>>> " " == Brent Clements <[email protected]> writes:
> We have a linux server running 2.4.20 plus it has nfsv3 udp/tcp
> server support compiled in.
> We have a linux client running 2.4.20 plus it has nfsv3 udp/tcp
> client support compiled.
> If we specify a read/write size above 8192 on the client, and
> then mount the nfs directory. It gives us the following on
> /proc/mounts
> cluster:/usr/local/ /tmp/d nfs
> rw,v3,rsize=8192,wsize=8192,hard,udp,lock,addr=cluster 0 0
> Do we have to edit something in a kernel include file to allow
> NFSV3 to mount above 8k?
You'll have to find a server which supports it. Linux 2.4.x knfsd as
it stands, supports only 8k, and so the client will override any
attempt that you make to set either rsize or wsize > 8k.
If you are feeling brave, you might try to change the value of
NFSSVC_MAXBLKSIZE in include/linux/nfsd/const.h and recompiling the
server.
Cheers,
Trond
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Maybe not quite the answer you were looking for, but have you seen the HP-UX tuning paper?
http://h21007.www2.hp.com/dspp/files/unprotected/devresource/Docs/Presentations/NFSperf.pdf
Tuning the HP server could make a big difference all round.
Barrie
-----Original Message-----
From: Brent Clements [mailto:[email protected]]
Sent: 12 March 2003 17:10
To: [email protected]
Subject: [NFS] NFS Client turning parameters?
Do you guys have any suggested kernel tuning parameters for a nfs v3
linux client? My server is an hp/ux fileserver.
Thanks,
Brent Clements
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Hi -
Dave has expanded that paper into a book, published by Prentice-Hall. Look at
http://www.hp.com/hpbooks/prentice/ptr_0130428167.html
I hadn't included it in the list of references in the FAQ because it was
HP-UX specific, but it still has a lot of good info in it that might be
relevant. I'm not biased or anything, since I was one of the technical
reviewers for it. :-)
Tom
--
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(650)906-0761(cell)
(650)964-8459(fax)
> Maybe not quite the answer you were looking for, but have you seen the HP-UX
> tuning paper?
>
> http://h21007.www2.hp.com/dspp/files/unprotected/devresource/Docs/Presentations/
> NFSperf.pdf
>
> Tuning the HP server could make a big difference all round.
>
> Barrie
>
> -----Original Message-----
> From: Brent Clements [mailto:[email protected]]
> Sent: 12 March 2003 17:10
> To: [email protected]
> Subject: [NFS] NFS Client turning parameters?
>
>
> Do you guys have any suggested kernel tuning parameters for a nfs v3
> linux client? My server is an hp/ux fileserver.
>
> Thanks,
> Brent Clements
>
>
>
>
>
>
>
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>
>
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