Re: "APIC error on CPUx" - what does this mean?

From: Petr Vandrovec (
Date: Mon Jan 07 2002 - 07:29:42 EST

On 7 Jan 02 at 23:17, Chris Wedgwood wrote:
> On Thu, Jan 03, 2002 at 10:38:27PM +0000, Alan Cox wrote:
> The occasional APIC error is fine (its logging a hardware event -
> probably something that caused enough noise to lose a message and
> retry it). The APIC bus is designed to stand these occasional
> errors
> I'm curious... is there any way to determine what is causing these?
> On a UP athlon I have:
> cw:tty5@charon(cw)$ uname -r ; uptime && grep ERR /proc/interrupts
> 2.4.17-rc2
> 02:09:50 up 4 days, 5:18, 10 users, load average: 0.00, 0.00, 0.00
> ERR: 5216
> which equates several per minute at times... no funny hardware, not
> running X11, and I don't remembering seeing these a while ago on this
> same mainboard (but I never really looked either, so that might not be
> true).

They are spurious IRQ 7, just message is printed only once during kernel
lifetime... I have about three spurious IRQ 7 per each 1000 interrupts
delivered to CPU. It is on A7V (Via KT133).
                                            Best regards,
                                                Petr Vandrovec
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