Date: Fri, 1 Dec 2000 12:42:58 -0600 (CST) From: "Operator" <operator@phreak.net> To: jin@george.lbl.gov Cc: hardware@freebsd.org Subject: Re: high bandwidth I/O motherboard (any recommendation?) Message-ID: <1247.207.250.66.46.975696178.squirrel@mail.phreak.net> In-Reply-To: <200012011650.eB1GoYi11345@portnoy.lbl.gov> References: <200012011650.eB1GoYi11345@portnoy.lbl.gov>
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> Even the PCI spec. says 32-bit/33MHz PCI bus should have 132MBps > I/O bandwidth, but none of these 32-bit/33MHz PCI chipset (Intel > or VIA) can give that high I/O bandwidth. > > The best I/O bandwidth I have seen is about 60MBps under FreeBSD 4.2. > I am not sure if this is limited by the memory controller or the PCI > bus controller. (I don't think the O.S. can control this bandwidth.) > > The newest PCI chipsets I have tested are: > > Intel 810/815e + 82801AA/82801BA > VIA VT82C694X + VT82C686A/VT82C686B > > Any comments/suggestion on which motherboard can give 120MBps I/O >bandwidth? Have you checked out any of the ServerWorks LE/SE II/III based boards? Off hand the only company I can think of that makes a board with these chipsets is AMI. If you're looking for a complete system I'd take a hard look at the Dell 2450 rackmount boxes. We've got a couple of these systems (which are based on the LE II chipset) and overall are very pleased with them. Good luck! Regards, -- Operator operator@phreak.net To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hardware" in the body of the message
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