Date: Tue, 28 Apr 1998 22:09:08 +0100 (BST) From: alan@lxorguk.ukuu.org.uk (Alan Cox) To: rgb@phy.duke.edu (Robert G. Brown) Cc: alan@lxorguk.ukuu.org.uk, 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: <m0yUHcj-000aNhC@the-village.bc.nu> In-Reply-To: <Pine.LNX.3.96.980428143648.23411J-100000@ganesh.phy.duke.edu> from "Robert G. Brown" at Apr 28, 98 02:39:06 pm
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> 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? PCI bus IDE devices (and most chipset incorporated IDE devices) are pretty decent and with hdparm -u1 or DMA driven transfers don't impact much. Sound cards can be a pig on some older boards where slow ISA DMA cycles hold off PCI. There is enough buffering in everything that it shouldnt every show up as a problem Alan To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe aic7xxx" in the body of the message
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