Date: Tue, 28 Apr 1998 14:39:06 -0400 (EDT) From: "Robert G. Brown" <rgb@phy.duke.edu> To: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: rmail@ittc.ukans.edu, aic7xxx@FreeBSD.ORG, linux-smp@vger.rutgers.edu, linux-tulip@cesdis1.gsfc.nasa.gov Subject: Re: Duration of Blocked Interrupts Message-ID: <Pine.LNX.3.96.980428143648.23411J-100000@ganesh.phy.duke.edu> In-Reply-To: <m0yUDym-000aNhC@the-village.bc.nu>
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On Tue, 28 Apr 1998, Alan Cox wrote: > 100Mbit cards have ring buffers often of about 20 frames - just servicing > a messier ISA interrupt will do as much delaying as the longer AIC handler > paths. Right, so a design spec is "no ISA cards in a high performance system";-). The PCI specs make that pretty clear. I'm afraid I do have a serial/modem card and a sound card on the ISA bus, but they are low interrupt density and I rarely use them. Ditto "No IDE devices", right? rgb Robert G. Brown http://www.phy.duke.edu/~rgb/ Duke University Dept. of Physics, Box 90305 Durham, N.C. 27708-0305 Phone: 1-919-660-2567 Fax: 919-660-2525 email:rgb@phy.duke.edu To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe aic7xxx" in the body of the message
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