Re: NFS and kernel 2.6.x

From: Marc Singer
Date: Sun Apr 18 2004 - 12:35:39 EST

On Sun, Apr 18, 2004 at 08:56:19AM +0100, Russell King wrote:
> On Sun, Apr 18, 2004 at 02:36:14AM -0400, Chris Friesen wrote:
> > Marc Singer wrote:
> >
> > > Client is a 200MHz ARM; server is a Linux host running 2.6.3 with the
> > > kernel nfs daemon; network is 100Mib. There is nothing else on the
> > > network except intermittent broadband traffic. Async is set on the
> > > server side.
> >
> > Is the ARM that slow? under 2MB/s seems odd to me...but them maybe I'm
> > used to faster machines.
> It's probably the SMC91c111 ether chip causing all the problem - it's
> only able to store about 4 packets before it starts dropping, which
> isn't that much on a 100mbit network.

I suspect that it might be a CPU issue. On transmit only, it never
gets above 18Mib.

> Running with rsize=4096 works wonders with this chip.

Already there.

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