FYI. 82543 doesn't support PCI-X protocol.
For PCI-X support use 82544, 82545 or 82546 based cards.
-Prafulla
Kelly Yancey [[EMAIL PROTECTED]] wrote:
> On Fri, 18 Oct 2002, Luigi Rizzo wrote:
>
> > On Fri, Oct 18, 2002 at 10:27:04AM -0700, Kelly Yancey wrote:
> > ...
> > > Hmm. Might that explain the abysmal performance of the em driver with
> > > packets smaller than 333 bytes?
> >
> > what do you mean ? it works great for me. even on -current i
> > can push out over 400kpps (64byte frames) on a 2.4GHz box.
> >
> > luigi
> >
>
> Using a SmartBit to push traffic across a 1.8Ghz P4; 82543 chipset card
> plugged into PCI-X bus:
>
> FrameSize TxFrames RxFrames LostFrames Lost (%)
> 330 249984 129518 120466 48.19
> 331 249144 127726 121418 48.73
> 332 248472 140817 107655 43.33
> 333 247800 247800 0 0
>
> It has no trouble handling frames 333 bytes or larger. But for any frame
> 332 bytes or smaller we consistently see ~50% packet loss. This same machine
> easily pushes ~100Mps with the very same frame sizes using a bge card rather
> than em.
>
> I've gotten the same results with both em driver version 1.3.14 and 1.3.15
> on both FreeBSD 4.5 and 4.7 (all 4 combinations, that is).
>
> Kelly
>
> --
> Kelly Yancey -- kbyanc@{posi.net,FreeBSD.org}
> FreeBSD, The Power To Serve: http://www.freebsd.org/
>
>
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