Also, use rsize=32768,wsize=32768 for NFS when using it over Gig.  The
bigger buffers help the throughput.


On 5/17/07, David <daz@damnetwork.net> wrote:
> On Thu, 17 May 2007, Jon M. Hanson wrote:
>
> >> So, the question:  Will my kernels negaotiate a 1G connection if the
> >> cables are not gig qualified?   If not, then I need to look at something
> >> other than the network hardware (unless I just got really crappy
> >> equipment).
> >>
> >> Thanks,
> >> David
> >>
> > The kernel doesn't do any negotiation for the LAN speed. That's done by
> > the cards themselves.
> >
> > I'm confused by your test results. Are you trying to test the speed by
> > doing this copy over NFS?
> >
> >
> yeah, sorry for the ambiguity.   My scp results were even worse, so I
> wanted to see if the HD on the server was causing any slowdown.  After I
> copied the file *to* the nfs share (/home/daz/udaz), I then:
>
> time dd if=/home/daz/udaz/testfile of=/dev/null bs=32k count=32768
>
> Hoping that would eliminate any issues with the hd on the server (for
> writes, anyway).  The results were the same, though.  Over 6 minutes.
>
> I'll see about getting new cables (cat 5e or cat6) and test it then.
>
> David
>
> --
> "I find your lack of faith disturbing."
> --Darth Vader
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