Date: Thu, 06 Nov 2003 12:22:45 -0500 (EST) From: John Baldwin <jhb@FreeBSD.org> To: harti@FreeBSD.org Cc: current@FreeBSD.org Subject: RE: New interrupt stuff breaks ASUS 2 CPU system Message-ID: <XFMail.20031106122245.jhb@FreeBSD.org> In-Reply-To: <20031106152721.J95465@beagle.fokus.fraunhofer.de>
next in thread | previous in thread | raw e-mail | index | archive | help
On 06-Nov-2003 Harti Brandt wrote: > JB>I figured out what is happenning I think. You are getting a spurious > JB>interrupt from the 8259A PIC (which comes in on IRQ 7). The IRR register > JB>lists pending interrupts still waiting to be serviced. Try using > JB>'options NO_MIXED_MODE' to stop using the 8259A's for the clock and see if > JB>the spurious IRQ 7 interrupts go away. > > Ok, that seems to help. Interesting although why do these interrupts > happen only with a larger HZ and when the kernel is doing printfs (this > machine has a serial console). I have also not tried to disable SIO2 and > the parallel port. Can you also try turning mixed mode back on and using http://www.FreeBSD.org/~jhb/patches/spurious.patch You should get some stray IRQ 7's in the vmstat -i output as well as a few printf's to the kernel console. -- John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?XFMail.20031106122245.jhb>