From owner-freebsd-hardware Thu Sep 19 01:03:42 1996 Return-Path: owner-hardware Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id BAA05197 for hardware-outgoing; Thu, 19 Sep 1996 01:03:42 -0700 (PDT) Received: from mx.serv.net (mx.serv.net [199.201.191.10]) by freefall.freebsd.org (8.7.5/8.7.3) with ESMTP id BAA05176 for ; Thu, 19 Sep 1996 01:03:36 -0700 (PDT) Received: from MindBender.serv.net by mx.serv.net (8.7.5/SERV Revision: 2.30) id BAA09505; Thu, 19 Sep 1996 01:03:44 -0700 (PDT) Received: from localhost.HeadCandy.com (michaelv@localhost.HeadCandy.com [127.0.0.1]) by MindBender.serv.net (8.7.5/8.7.3) with SMTP id BAA08004; Thu, 19 Sep 1996 01:03:24 -0700 (PDT) Message-Id: <199609190803.BAA08004@MindBender.serv.net> X-Authentication-Warning: MindBender.serv.net: Host michaelv@localhost.HeadCandy.com [127.0.0.1] didn't use HELO protocol To: BRETT_GLASS@infoworld.com cc: Bruce Evans , hardware@freebsd.org Subject: Re: More or fewer IRQs? In-reply-to: Your message of Thu, 19 Sep 96 00:44:45 -0800. <9608188431.AA843112557@ccgate.infoworld.com> Date: Thu, 19 Sep 1996 01:03:24 -0700 From: "Michael L. VanLoon -- HeadCandy.com" Sender: owner-hardware@freebsd.org X-Loop: FreeBSD.org Precedence: bulk >If what you say is true, the only place I can be sure to save time (this is >on a 486DX4/100) is at the ICU by setting those AUTO_EOI flags. But how >safe are these? I was getting missed IDE completion interrupts with a >kernel that had AUTO_EOI_1 on, but don't know if that was the only source >of the problem. (I've changed a LOT of options in more recent kernels.) I have run a kernel with AUTO_EOI_1 and AUTO_EOI_2 both enabled, with two IDE drives, and I didn't have a single problem. This was on an ALR 386 EISA motherboard. ----------------------------------------------------------------------------- Michael L. VanLoon michaelv@MindBender.serv.net --< Free your mind and your machine -- NetBSD free un*x >-- NetBSD working ports: 386+PC, Mac 68k, Amiga, Atari 68k, HP300, Sun3, Sun4/4c/4m, DEC MIPS, DEC Alpha, PC532, VAX, MVME68k, arm32... NetBSD ports in progress: PICA, others... -----------------------------------------------------------------------------