[ale] Fast NFS

[Stephan Uphoff]

On Sat, 2004-09-11 at 23:12, Christopher Fowler wrote:
> Funmy.
> 
> I can't imagine a busty load.  I'm on a 100mbs switch and all I'm doing
> on the ARM is compiling GCC.  What else could be going on that the NFS
> server does not respond?  It is only serving up one share to one
> machine.  It is doing nothing else.

Are you using NFS2 or NFS3 ?

Have you tried to reduce the write/read size all the way down to 1024 ?

Some network cards are just overwhelmed when a packet train for
a big NFS request/reply is coming in.

What NIC are you using on the server?

How big is the receive queue on your arm board? 
Can the board get enough memory to replace the buffers used
by the received frames?

As always a network sniffer is your best friend.


	Stephan


> 
> 
> On Sat, 2004-09-11 at 21:29, Pete Hardie wrote:
> > On Sat, 11 Sep 2004 17:32:58 -0400, Stephan Uphoff <ups at tree.com> wrote:
> > > My guess is that IP fragmentation issues (packet loss under load, busty
> > > load .. ) are killing you. (You are using UDP right ?)
> >
> > "Busty load"???  When did they extend NFS to recognize porn? :->

NFS 6 ?

Not that I know of - but NFS 4 gained non persistent file handles for
the MS crowd :-( .... so they are definitely trying for mass appeal :-)


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