From owner-freebsd-current Sun Mar 4 15:21:10 2001 Delivered-To: freebsd-current@freebsd.org Received: from moby.geekhouse.net (moby.geekhouse.net [64.81.6.36]) by hub.freebsd.org (Postfix) with ESMTP id 9D0B537B718 for ; Sun, 4 Mar 2001 15:21:06 -0800 (PST) (envelope-from jhb@FreeBSD.org) Received: from laptop.baldwin.cx (john@dhcp152.geekhouse.net [192.168.1.152]) by moby.geekhouse.net (8.11.0/8.9.3) with ESMTP id f24NLl184131; Sun, 4 Mar 2001 15:21:47 -0800 (PST) (envelope-from jhb@FreeBSD.org) Message-ID: X-Mailer: XFMail 1.4.0 on FreeBSD X-Priority: 3 (Normal) Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 8bit MIME-Version: 1.0 In-Reply-To: Date: Sun, 04 Mar 2001 15:20:37 -0800 (PST) From: John Baldwin To: The Hermit Hacker Subject: Re: More on system hangs ... IRQ related? Cc: current@FreeBSD.org, Alex Zepeda Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On 04-Mar-01 The Hermit Hacker wrote: > On Sun, 4 Mar 2001, Alex Zepeda wrote: > >> On Sun, Mar 04, 2001 at 03:18:39PM -0400, The Hermit Hacker wrote: >> >> > My sound card overlaps with fxp0, and fxp1 overlaps with the >> > HighPoint controller ... >> > >> > Grasping at straws here ... >> >> Ditch the HPT366, it's crap and will cause system instabilities with >> "fast" hard drives. I'm not sure what you have attached to it, but I've >> had problems with {either,both} an IBM ATA100 HDD and a Western Digital >> ATA66 drive attached. Apparently the ATA100 counterpart from HighPoint >> isn't so bad. > > Okay, everything in my box is SCSI, so I'm not suspecting the HPT... its > more the pcm & fxp that I'm thinking ... > > how does the OS handle having both devices hit simultaneously on the same > IRQ? The IRQ fires and is masked. We then run both handlers, one after the other, and when they have finished re-enable the IRQ. -- John Baldwin -- http://www.FreeBSD.org/~jhb/ PGP Key: http://www.baldwin.cx/~john/pgpkey.asc "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message