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Date:      Wed, 20 Jun 2001 16:38:13 -0700 (PDT)
From:      Todd <todd@vyrus.net>
To:        Bsdguru@aol.com
Cc:        freebsd-isp@FreeBSD.ORG
Subject:   Re: Gigabit Eth (GA620) question
Message-ID:  <Pine.BSF.4.21.0106201619120.47617-100000@vyrus.net>
In-Reply-To: <f8.ba36f1a.28627c54@aol.com>

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On Wed, 20 Jun 2001 Bsdguru@aol.com wrote:

> In a message dated 06/20/2001 6:02:13 PM Eastern Daylight Time, 
> todd@vyrus.net writes:
> 
> > Questions:
> >  
> >  I am loosing VERY close to 50% of packets at the kernel even at only 1MBs.
> >  (The GA620 is in a 32bit slot as the 64bit slot in the server does not
> >  accommodate the card...) Regardless of the amt of traffic (1MBs..30MBs) I
> >  send to the interface, it looses VERY close to 50% of packets (I dont see
> >  this as a coincidence but do not know the answer) Has anyone experienced
> >  the same results with this card?
> >  
> >  Also, for some reason I am only able to see IPX traffic. No TCP or UDP...
> >  Any ideas?
> >  
> 
> You cant do gigabit with a 32-bit card unless you have a lot of buffer space, 
> which the netgear doesnt.  IF you have no other cards in the box OR  you have 
> a dual-bus system with ONLY the gig card on one bus, you might squeeze 
> through. 32bit PCI cant do sustained 1 Gb/s transfers, so your longer packets 
> will have problems making it through. Its simply not suitable. Its like doing 
> 100BT on ISA. 

I did understand that I would take a performance hit. I just found it odd
that it was allways VERY near 50% no matter how much traffic I sent to the
interface...

Thanks again.

- Todd


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