Re: Extra Machine-to-machine ethernet connection?

[Tim Pickering <tim astro rug nl>]

> That said, NFS won't really be noticably faster, I don't think.  It
> will for 2.2 kernel based systems running knfsd, but probably not for
> 2.0 based systems.  The NFS server on 2.0 based Linux can't fill a
> 10Mbs pipe, let alone a 100Mbs pipe.  Now, *if* your 10Mbs network is
> very congested already, then this private network will still help.

using the user-land nfsd and 2.2.1 on my P5-100 at work i can get 2--3
MB/sec transfers between it and my ultra 10.  they're each running
half-duplex 100 Mb/s and are on the same switch.  i don't have numbers
for nfsd with a 2.0.x kernel on the same hardware, though.
considering my main drive on the P5 only gets 3.5--4 MB/sec locally,
2--3 MB/sec ain't bad.  thus, you can indeed fill a 10 Mb/s pipe with
2.2.x with either knfsd or plain nfsd.

this may be a FAQ somewhere, but is it possible to full duplex with 
a crossover cable only or is a hub required?  if so, that might be
another win for doing the private network.  

tim

-- 
+----------------------------------------------------------------------+
|  Tim Pickering                 |     Kapteyn Institute, Postbus 800  |  
|  tim astro rug nl              | 9700 AV Groningen, The Netherlands  |
|  http://www.astro.rug.nl/~tim/ |                    +31-50-363-6519  |
+----------------------------------------------------------------------+
When in doubt, mumble; when in trouble, delegate; when in charge, ponder.
		-- James H. Boren