RE: [PATCH] 2.4.23-pre4 add support for udma6 to nForce IDE drive r
From: Allen Martin
Date: Fri Sep 19 2003 - 18:53:49 EST
> Interesting; lots of ACPI edge-triggered interrupts:
> dagda:~# cat /proc/interrupts
> 0: 519365 IO-APIC-edge timer
> 1: 16713 IO-APIC-edge keyboard
> 2: 0 XT-PIC cascade
> 8: 4 IO-APIC-edge rtc
> 9: 0 IO-APIC-level acpi
> 14: 863415 IO-APIC-edge ide0
> 15: 201651 IO-APIC-edge ide1
> 19: 306188 IO-APIC-level nvidia
> 20: 57261 IO-APIC-level usb-ohci, eth0
> 21: 0 IO-APIC-level ehci_hcd, NVidia nForce2
> 22: 3 IO-APIC-level usb-ohci, ohci1394
> NMI: 0
> LOC: 519312
> ERR: 0
> MIS: 0
Your interrupts look fine, this is the way they should be.
> ... but no stability problems since the primary drive has been
> running at UDMA133. Earlier UDMA100 freezes were completely
> repeatable; identical kernel, just without your two patches.
You can try downgrading your drive to udma5 to see if udma6 really does make
it more stable (hdparm -X udma5 /dev/hdX) but I can't think of any reason
why it should.
> I take it that I should boot with noapic in future to be safe.
I've been telling people to disable APIC / ACPI because of the interrupt
problem, but your interrupts are fine, so I'd leave it alone. I'm curious,
what version BIOS do you have?
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/