Date: Fri, 18 Oct 1996 09:07:38 -0700 From: Jim Shankland <jas@flyingfox.COM> To: hardware@freebsd.org Subject: collision count reported by netstat -I? Message-ID: <199610181607.JAA04414@saguaro.flyingfox.com>
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While investigating some network performance problems, I've noticed that the collision count reported by netstat -I for SMC9332DST cards running in 10 Mbit mode tends to be much higher than I would expect. I do not believe I'm dealing with defective cards, as this happens on multiple cards, and on networks that seem to be performing OK. As a specific example, a workstation with one of the SMC cards, located on a moderately busy wire, reports about a 3.5% collision rate (Opackets/Collisions). The principal router on that wire (also a FreeBSD box), sporting a 3C509 card, reports a collision rate of just under 1 in a *millino*. As it happens, virtually all traffic to and from the workstation, plus quite a bit more, passes through the router. Does anyone have any thoughts as to what might be the cause of this huge difference? Jim Shankland Flying Fox Computer Systems, Inc.home | help
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