From owner-freebsd-hardware Wed Sep 18 22:59:31 1996 Return-Path: owner-hardware Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id WAA04993 for hardware-outgoing; Wed, 18 Sep 1996 22:59:31 -0700 (PDT) Received: from lserver.infoworld.com (root@lserver.infoworld.com [192.216.48.4]) by freefall.freebsd.org (8.7.5/8.7.3) with ESMTP id WAA04979 for ; Wed, 18 Sep 1996 22:59:29 -0700 (PDT) Received: from ccgate.infoworld.com (ccgate.infoworld.com [192.216.49.101]) by lserver.infoworld.com (8.7.5/8.7.3) with SMTP id WAA29248; Wed, 18 Sep 1996 22:58:58 -0700 (PDT) From: BRETT_GLASS@infoworld.com Received: from ccMail by ccgate.infoworld.com (SMTPLINK V2.11) id AA843112557; Thu, 19 Sep 96 00:44:45 PST Date: Thu, 19 Sep 96 00:44:45 PST Message-Id: <9608188431.AA843112557@ccgate.infoworld.com> To: Bruce Evans , hardware@freebsd.org Subject: Re: More or fewer IRQs? Sender: owner-hardware@freebsd.org X-Loop: FreeBSD.org Precedence: bulk Bruce: 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.) --Brett