Date: Mon, 16 Feb 1998 17:53:14 -0800 From: David Greenman <dg@root.com> To: Brandon Gillespie <brandon@roguetrader.com> Cc: FreeBSD-Hackers@FreeBSD.ORG Subject: Re: Networking Oddity, 16k/sec over 10B2, long pauses. Message-ID: <199802170153.RAA29974@implode.root.com> In-Reply-To: Your message of "Mon, 16 Feb 1998 16:51:09 MST." <Pine.BSF.3.96.980216164700.23019A-100000@roguetrader.com>
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>We have a 10B2 network. It was getting a little large, so we installed an >Asante 10B2 hub. Before the hub installed I could get great transfer >rates. Now, I get 16k/sec transfer rates (via ftp). When I turn on >hashing in ftp I see it download a chunk, then wait, then download a >chunk, then wait. The waits are usually a second long. I am also seeing >a collision light on the hub. I'm wondering if this pause is FreeBSD >collecting its marbles after a collision; and what could possibly be >causing the collision in the first place. *Nothing* was changed on the >network (or nodes on the network) other than installing the hub and >splitting into segments. Also, this problem only appears with FreeBSD >boxes--ftping from a powermac over the hub to a Digial Unix box gets >decent transfer rates. Sounds like a cabling problem of some kind. The operating system doesn't control the collision behavior - that is done in hardware on the card. The delays you're seeing are packet drops. -DG David Greenman Core-team/Principal Architect, The FreeBSD Project To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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