Re: [Dumb question] 100k RTC interrupts/sec on SMP system: why?

From: Paul P Komkoff Jr
Date: Fri Nov 10 2006 - 08:19:27 EST


Replying to Arjan van de Ven:

Hi, Arjan!

> On Fri, 2006-11-10 at 15:35 +0300, Paul P Komkoff Jr wrote:
> > ce: <Cronyx Tau-PCI/32-Lite> at 0xfb013000 irq 217
>
> what kind of device is this? Did the driver come with the kernel?

It's E1 interface card, I use them for telephony.

I am pretty sure that Tau32 isn't guilty (I did tests with and without
it installed), see interrupts

[stingray@voipng ~]$ cat /proc/interrupts
CPU0 CPU1
0: 9833272 9829747 IO-APIC-edge timer
6: 3 2 IO-APIC-edge floppy
7: 1 1 IO-APIC-edge parport0
8: 3673166897 3674697116 IO-APIC-level rtc
10: 0 0 IO-APIC-level ohci_hcd:usb1
177: 586 401 IO-APIC-level acpi
185: 9787 6905 IO-APIC-level aic7xxx
193: 6 9 IO-APIC-level aic7xxx
201: 249751 6 IO-APIC-level eth0
217: 78926484 78899594 IO-APIC-level Cronyx Tau-PCI/32
NMI: 0 0
LOC: 19663975 19663974
ERR: 0
MIS: 0

This is after 22 hours of uptime.

> Also have you tried acpi=off or the linux firmware test kit (see url in
> sig) to check the bios?

Didn't acpi=off meant to hose interrupt routing, SMP, and poweroff?
I'll try it right now.
And thanks, I didn't know about firmware test kit either ... will
download it right now and test in a few hours.

--
Paul P 'Stingray' Komkoff Jr // http://stingr.net/key <- my pgp key
This message represents the official view of the voices in my head
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/