From: Trond Myklebust <trond.myklebust@fys.uio.no>
Subject: Re: NFS performance tuning
Date: Sun, 08 Jan 2006 17:09:15 -0500
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To: Marc Eshel <eshel@almaden.ibm.com>
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On Sun, 2006-01-08 at 13:10 -0800, Marc Eshel wrote:
> nfs-admin@lists.sourceforge.net wrote on 01/08/2006 12:22:13 PM:
> 
> > On Sat, 2006-01-07 at 23:44 -0800, Blake Golliher wrote:
> > > The linux nfs client supports, at least, a 64k block transfer size.  I 
> 
> > > don't believe it's constrained by transport protocol.
> > 
> > That is a very recent feature, though. Unless you are using the NFS_ALL
> > patches, you will only get 64k block transfer sizes on the very latest
> > GIT tarball. ;-)
> > 
> > Cheers,
> >   Trond
> > 
> 
> But is still constrained by the transport protocol.
> Marc.

Yes. UDP won't allow you to use 64k read/write sizes since that would
overflow the size of a datagram. TCP has no such inherent limitation,
though.

Cheers,
  Trond



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