linuxaudio.org

On 12/06/2012 05:49 PM, Aaron Krister Johnson wrote:

quoted text
> Hi all,

>

> I posted this as a followup to an earlier thread, but I think the traffic

> buried it. I was eager and curious to hear other's knowledge and experience:

>

> I have an EEEPC 1000HE netbook (used to run Arch but I got tired of having

> to compile, or failing to compile, some extra pacakges) that runs Xubuntu,

> usually with XFCE of course, but sometimes with Fluxbox. Also have a bigger

> laptop, and HP pavilion7, running Mint with Maya Desktop (I also switch it

> to Fluxbox sometimes).

>

> Anyway, it seems the EEE has suboptimal IRQ hardware settings for RT low

> latency audio...doing less /proc/interrupts shows that there's a lot of

> sharing, like the audio and video card being on the same IRQ. Indeed,

> running Csound FLTK gui interfaces and moving them while processing the

> csound orchestra sometimes makes pops and crackle dropouts, while the same

> thing on the better IRQ set HP Pavilion shows flawless performance.

>

> Even if I run an outboard USB audio interface (Lexicon Lambda) on the EEE,

> there is still suboptimal USB Irq settings to contend with.

>

> I've always suspected IRQ settings, which are unfortunately hard-wired in

> laptops, to be profoundly influential in RT performance, but I wanted the

> audio guru programmers to comment.

>

> Thanks,

> AKJ

>

What's the output of

cat /proc/interrupts

?
Jeremy
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