Gentoo Archives: gentoo-user

From: Grant <emailgrant@×××××.com>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] Preventing a shared interrupt
Date: Sat, 22 May 2010 20:44:44
Message-Id: AANLkTikZ9XWKW9Y1YORXcocjzSIVCAcDE2aqpIWkc45l@mail.gmail.com
In Reply to: Re: [gentoo-user] Preventing a shared interrupt by Adam
1 >> Does anyone know how to prevent my "nouveau" video card and "ath" wifi
2 >> card from sharing interrupt 19?  I can't move the video card slot and
3 >> I'd rather not move the wifi card slot if possible.
4 >>
5 >> BTW, does anyone see any other opportunity for interrupt optimization
6 >> here?  I'm trying to optimize for video and especially audio, and I'm
7 >> using a USB 1.0 sound card.
8 >>
9 >> # cat /proc/interrupts
10 >>            CPU0
11 >>   0:     473139   IO-APIC-edge      timer
12 >>   1:          2   IO-APIC-edge      i8042
13 >>   7:          1   IO-APIC-edge
14 >>   8:        127   IO-APIC-edge      rtc0
15 >>   9:          0   IO-APIC-fasteoi   acpi
16 >>  12:          3   IO-APIC-edge      i8042
17 >>  14:          0   IO-APIC-edge      ide0
18 >>  19:     135597   IO-APIC-fasteoi   nouveau, ath
19 >>  20:          2   IO-APIC-fasteoi   ehci_hcd:usb2
20 >>  21:      13860   IO-APIC-fasteoi   ehci_hcd:usb1
21 >>  22:     971970   IO-APIC-fasteoi   ohci_hcd:usb4
22 >>  23:       3446   IO-APIC-fasteoi   ohci_hcd:usb3
23 >>  28:      21524   PCI-MSI-edge      ahci
24 >
25 > FWIW a grep of the nouveau source doesnt bring up any hits on MSI, so it
26 > looks like the driver doesnt support it yet. Likewise no hits for ath5k,
27 > however ath9k does support it.
28
29 Nice, thanks Adam. Sounds like ath9k is the way out.
30
31 - Grant

Replies

Subject Author
Re: [gentoo-user] Preventing a shared interrupt Grant <emailgrant@×××××.com>