Date: Sun, 25 Jun 1995 14:11:53 -0700 From: "Russell L. Carter" <rcarter@geli.com> To: hackers@freebsd.org Subject: Re: FreeBSD as a router Message-ID: <199506252111.OAA01741@geli.clusternet>
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|> R. Grimes writes..... |> |> >The SMC 9332 EtherPower 10/100 is a bus master device with no memory |> >on it at all. It uses host memory for packet buffers and for all |> >practical purposes this can be as much memory as you want to through |> >at it! |> > |> As long as you can get the bus. You don't want this on a 100mbs media |> device. The card (or controller) needs some buffering or you'll be in |> trouble with a heavy burst. | |I don't think that a 10MByte a second memory demand is going to have |much of a problem at all on a 132MB/sec (theroy) or 100MByte/sec (measured) |bus like PCI. Well, that 100 MBytes/sec was mem to mem, right? Not going through the bus to a device. For that the best I've ever heard of with the current generation PCI chipsets is 18 MBytes/sec. If anybody knows of device<->mem faster than 18 MBytes/sec I would appreciate a pointer to it. Russell
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