From owner-aic7xxx Tue Apr 28 14:19:57 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id OAA09400 for aic7xxx-outgoing; Tue, 28 Apr 1998 14:19:57 -0700 (PDT) (envelope-from owner-aic7xxx@FreeBSD.ORG) Received: from snowcrash.cymru.net (snowcrash.cymru.net [163.164.160.3]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id OAA09380 for ; Tue, 28 Apr 1998 14:19:41 -0700 (PDT) (envelope-from alan@lxorguk.ukuu.org.uk) Received: from the-village.bc.nu (the-village.bc.nu [163.164.160.21]) by snowcrash.cymru.net (8.8.7/8.7.1) with SMTP id WAA06621; Tue, 28 Apr 1998 22:18:25 +0100 Received: by the-village.bc.nu (Smail3.1.29.1 #2) id m0yUHcj-000aNhC; Tue, 28 Apr 98 22:09 BST Message-Id: From: alan@lxorguk.ukuu.org.uk (Alan Cox) Subject: Re: Duration of Blocked Interrupts To: rgb@phy.duke.edu (Robert G. Brown) Date: Tue, 28 Apr 1998 22:09:08 +0100 (BST) Cc: alan@lxorguk.ukuu.org.uk, rmail@ittc.ukans.edu, aic7xxx@FreeBSD.ORG, linux-smp@vger.rutgers.edu, linux-tulip@cesdis1.gsfc.nasa.gov In-Reply-To: from "Robert G. Brown" at Apr 28, 98 02:39:06 pm Content-Type: text Sender: owner-aic7xxx@FreeBSD.ORG Precedence: bulk > 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