Re: irq19 interrupt storm?

You're right: atapci1, atapci2, fwohci0 and uhci4 are all sharing the same
irq (19) while irqs 20, 21, 22 at least seem completely unused. Here's a
dumb question: how do I fix it? I tried setting "plug and play OS" in the
BIOS and then using device.hints to push different devices to different
irqs. But every time I tried a new hint it seemed to be ignored. I was
trying stuff like:

set hint.atapci.1.irq="20"
set hint ata.4.irq="20" (ata4 is a channel on atapci1)
set hint fwhco.0.irq="20"
etc...


I also tried to move the dc driver to a new irq as a test. This was also
seemingly ignored.

I then tried turning "plug and play OS" off in the BIOS but I don't see
anywhere to set the IRQs of the onboard SATA controllers via the menus. I'm
looking for a BIOS upgrade now... any other advice?

Thx,
Scott


On Tue, Sep 16, 2008 at 7:12 AM, Gary Jennejohn
<gary.jennejohn@xxxxxxxxxx>wrote:

On Mon, 15 Sep 2008 22:57:38 -0700
"Scott Gasch" <scott.gasch@xxxxxxxxx> wrote:

Hi,

I'm running freebsd 7.0-RELEASE-p4 on a 4-core amd64 box. Nearly 100% of
1 cpu is constantly being used handling irq19: uhci4 interrupts. This
seems to happen both with and without any USB devices plugged in:

vmstat -i
interrupt total rate
irq1: atkbd0 5 0
irq6: fdc0 1 0
irq17: mskc0 dc0 1180547 18
irq18: skc0 uhci2* 163250699 2512
irq19: uhci4++ 3187989508 49072

I think the ++ here indicates that two or more devices are sharing this
interrupt. Try doing "grep irq.*19 /var/run/dmesg.boot" to see which
ones. One of these devices could be the culprit.

---
Gary Jennejohn

_______________________________________________
freebsd-questions@xxxxxxxxxxx mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-questions
To unsubscribe, send any mail to "freebsd-questions-unsubscribe@xxxxxxxxxxx"

Relevant Pages

  • Re: SIS Ethernet Controller - AMD64 - Not recognised
    ... >>To resolve that problem I had to disable plug and play in the bios. ... > Thanks for your input Scot. ... The Lan is turned on in the bios as well. ...
    (Fedora)
  • Re: XP =?iso-8859-1?Q?f=E4hrt?= nach Beenden wieder hoch
    ... Im BIOS war eine Wake On-Einstellung auf On gestellt. ... Unterstützt Plug & Play: Ja ... Systemstartmerkmale ...
    (microsoft.public.de.german.windowsxp.hardware)
  • Re: 5.3-BETA hangs on Acer TM290 series Laptop
    ... :> Try switching any "Plug and Play OS" type options in your BIOS ...
    (freebsd-current)
  • Re: USB not working
    ... I checked the services.msc and the Human user interface wasn't ... Does the plug and play enabled n your BIOS? ...
    (microsoft.public.windowsxp.help_and_support)
  • Re: irq19 interrupt storm?
    ... BIOS and then using device.hints to push different devices to different ... set hint ata.4.irq="20" ... I then tried turning "plug and play OS" off in the BIOS but I don't see ... anywhere to set the IRQs of the onboard SATA controllers via the menus. ...
    (freebsd-questions)