From owner-freebsd-hardware  Wed Oct  9 17:21:31 1996
Return-Path: owner-hardware
Received: (from root@localhost)
          by freefall.freebsd.org (8.7.5/8.7.3) id RAA22240
          for hardware-outgoing; Wed, 9 Oct 1996 17:21:31 -0700 (PDT)
Received: from saguaro.flyingfox.com (saguaro.flyingfox.com [204.188.109.253])
          by freefall.freebsd.org (8.7.5/8.7.3) with SMTP id RAA22230
          for <hardware@FreeBSD.ORG>; Wed, 9 Oct 1996 17:21:28 -0700 (PDT)
Received: (from jas@localhost) by saguaro.flyingfox.com (8.6.12/8.6.10) id RAA27026; Wed, 9 Oct 1996 17:19:19 -0700
Date: Wed, 9 Oct 1996 17:19:19 -0700
From: Jim Shankland <jas@flyingfox.COM>
Message-Id: <199610100019.RAA27026@saguaro.flyingfox.com>
To: jas@flyingfox.COM, julian@whistle.com
Subject: Re: Poor SMC Etherpower 10/100 transfer rates
Cc: John.McLaughlin@acucobol.ie, hardware@FreeBSD.ORG,
        rgrimes@gndrsh.aac.dev.com
Sender: owner-hardware@FreeBSD.ORG
X-Loop: FreeBSD.org
Precedence: bulk

>From julian@whistle.com Wed Oct  9 17:05:27 1996
Return-Path: julian@whistle.com
Received: (from smap@localhost) by saguaro.flyingfox.com (8.6.12/8.6.10) id RAA26996 for <jas@flyingfox.COM>; Wed, 9 Oct 1996 17:05:26 -0700
Received: from alpo.whistle.com(207.76.204.38) by saguaro.flyingfox.com via smap (V1.3)
	id sma026994; Wed Oct  9 17:04:57 1996
Received: from current1.whistle.com (current1.whistle.com [207.76.205.22]) by alpo.whistle.com (8.7.5/8.7.3) with SMTP id RAA21196; Wed, 9 Oct 1996 17:06:41 -0700 (PDT)
Sender: julian@whistle.com
Message-ID: <325C3D9B.446B9B3D@whistle.com>
Date: Wed, 09 Oct 1996 17:04:43 -0700
From: Julian Elischer <julian@whistle.com>
Organization: Whistle Communications
X-Mailer: Mozilla 3.0b6 (X11; I; FreeBSD 2.2-CURRENT i386)
MIME-Version: 1.0
To: Jim Shankland <jas@flyingfox.COM>
CC: John.McLaughlin@acucobol.ie, rgrimes@gndrsh.aac.dev.com,
        hardware@FreeBSD.ORG
Subject: Re: Poor SMC Etherpower 10/100 transfer rates
References: <199610092222.PAA26723@saguaro.flyingfox.com>
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Status: R

Julian Elischer <julian@whistle.com> wrote:

> Jim Shankland wrote:
> 
> > ballpark 3% of the theoretical maximum capacity); the FreeBSD
> > box is reporting a 20%+ collision rate!  I will now definitely
> > try swapping out the SMC card.
> 
> if it is reporting collisions then it's probably not teh culprit..
> it's the card that doesn't see ANY collisions thatyou should be 
> worried about.

Hmm ... I wonder.  I figure the card may be detecting collisions just
fine, but "forgetting" to check for an idle wire before transmitting.
In that case, it could transmit, then immediately detect a collision ....

I'll be swapping out the SMC card tomorrow night, on general principle,
and will report back if I find out anything interesting.

Jim Shankland
Flying Fox Computer Systems, Inc.