Date: Wed, 11 Feb 2004 13:16:50 -0500 From: John Baldwin <jhb@FreeBSD.org> To: des@des.no (Dag-Erling =?iso-8859-1?q?Sm=F8rgrav?=), "Petr Holub" <hopet@ics.muni.cz> Cc: current@freebsd.org Subject: Re: storm of stray interrupts Message-ID: <200402111316.50941.jhb@FreeBSD.org> In-Reply-To: <xzpad3pbtd6.fsf@dwp.des.no> References: <02ad01c3f0a8$0a6578a0$2136fb93@kloboucek> <xzpad3pbtd6.fsf@dwp.des.no>
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On Wednesday 11 February 2004 09:09 am, Dag-Erling Smørgrav wrote: > "Petr Holub" <hopet@ics.muni.cz> writes: > > -su-2.05b# vmstat -i > > interrupt total rate > > [...] > > irq16: fwohci0 416899230 2703 > > There's definitely something wrong with your firewire controller. Wrong, his BIOS just sucks and doesn't provide info on how to route drm0's interrupt when using ACPI. drm0 is routed to IRQ 16, but we end up using the ATPIC interrupt 11 to try and route it instead due to his broken BIOS. Since PCI interrupts are level triggered, this means that as soon as drm0 interrupts, it storms on IRQ 16 since drm0's ISR never gets called. -- John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve" = http://www.FreeBSD.org
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