Re: [NFS] General network slowness on SIS 530 with eepro100

From: Christian Reis (kiko@async.com.br)
Date: Tue Aug 13 2002 - 20:50:32 EST

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On Wed, Aug 14, 2002 at 03:13:55AM +0200, Trond Myklebust wrote:
> >>>>> " " == Christian Reis <kiko@async.com.br> writes:
>
> > Helle there,
>
> > I've been, for the past days, setting up a fairly big diskless
> > network based on Linux. I've chosen to use 2.4.19 as the kernel
> > because there were some hardware requirements, and for most of
> > the newer boxes, it runs fine. However, for three of the older
> > boxes, we have had some pretty odd performance and stability
> > issues. This message is about the latest one, which is an ASUS
> > P5S-B (has the infamous SIS 530 chipset) on an intel eepro100
> > card. Details:
>
> Is all this NFS over UDP? If so, numbers should not really have
> changed in 2.4.19 ( - yes my patchset changes things, but stock 2.4.19
> should not be too different w.r.t 2.4.18)
>
> Are you able to determine where in the 2.4.19-pre series the
> performance dies?

Yes, it is over UDP. (Should I try TCP?)

Well, to be honest, I just set the network up, and I only tried two
kernels: 2.4.19 kosher and 2.4.19 with nfs-all. I haven't experimented
swapping kernels because I've been a bit singleminded that it's
something to do with the hardware setup.

I can try using an older kernel to see if it helps. 2.4.18 is a good
idea? Let me try and I'll post you back.

(BTW: Your patches *do* solve a problem I have: it makes client nfs
locking actually work; before them I had some serious issues with
locking under high network load. Not anymore. The flock() patch is also
essential for running sendmail on the diskless stations --- before it I
was forced to use tmpfs for /var/spool/mqueue.)

Take care,

--
Christian Reis, Senior Engineer, Async Open Source, Brazil.
http://async.com.br/~kiko/ | [+55 16] 261 2331 | NMFL
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