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.
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
Aaron Krister Johnson
http://www.akjmusic.com
http://www.untwelve.org
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