Re: libata, Sound on same IRQ : flaky sound

From: Jeff Garzik
Date: Wed Aug 27 2008 - 20:59:49 EST


Robert M. Stockmann wrote:
Hi,

I have a couple of AMD64 machines with onboard sound devices running and they all have one thing in common : flaky sound when one is doing some heavy disk I/O on the SATA disks. Interesting enough /proc/interrupts shows that libata is using the same IRQ as the sound devices :

model name : AMD Athlon(tm) 64 X2 Dual Core Processor 6000+
stepping : 3
cpu MHz : 3014.679
cache size : 1024 KB

# cat /proc/interrupts CPU0 CPU1 0: 55869 154467838 IO-APIC-edge timer
8: 0 0 IO-APIC-edge rtc
9: 0 0 IO-APIC-level acpi
16: 1453 499686 IO-APIC-level libata, NVidia CK8S
17: 0 0 IO-APIC-level ehci_hcd:usb1
18: 27633 69978987 IO-APIC-level eth0
NMI: 10718 12112 LOC: 154533874 154533852 ERR: 0
MIS: 0

What is the behavior of a recent kernel?

Is your SATA interface set to legacy mode in BIOS?

Jeff


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