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 <[EMAIL PROTECTED]> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ _______________________________________________ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "[EMAIL PROTECTED]"
