Date: Tue, 01 Jun 1999 18:17:24 +0100 From: Peter Edwards <peter.edwards@isocor.ie> To: hackers@freebsd.org Subject: Re: xl driver for 3Com Message-ID: <375415A4.33FB232E@isocor.ie> References: <199906011650.MAA24039@etinc.com>
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Dennis wrote: > For "Fairness" gaps in between frames are better > as you approach capacity of your wire. Isn't there some ethernet requirement (implemented on the NIC) that a transmitter holds off the wire a little to give other NICs enough time to notice there's nothing being transmitted? The sequence of events would be something like: NIC1 NIC2 time | v start xmit host queues next packet xmit finishes start "back-to-back" delay sense idle wire start xmit sense access from NIC2 "back-to-back" delay ends wait for wire idle xmit finishes sense idle start xmit Or did I just fall asleep reading the spec and dream this. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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