Date: Wed, 9 Oct 1996 17:19:19 -0700 From: Jim Shankland <jas@flyingfox.COM> To: jas@flyingfox.COM, julian@whistle.com Cc: John.McLaughlin@acucobol.ie, hardware@FreeBSD.ORG, rgrimes@gndrsh.aac.dev.com Subject: Re: Poor SMC Etherpower 10/100 transfer rates Message-ID: <199610100019.RAA27026@saguaro.flyingfox.com>
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>From julian@whistle.com Wed Oct 9 17:05:27 1996
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Date: Wed, 09 Oct 1996 17:04:43 -0700
From: Julian Elischer <julian@whistle.com>
Organization: Whistle Communications
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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>
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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.
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