[linux-audio-user] Tracking down overruns

[Benji Flaming]

> PTLE for me. Thought about an 002 and decided before I jumped I'd give
> Linux a try.

Are you running an 001, then?  I bought my Digidesign AudioMedia III card
(2-in, 2-out, analog or digital) just a few months before the 001 was
announced.  Needless to say, it was rather frustrating that there was no
upgrade path.  My studio partner and I were also unfortunate enough to
purchase our MIX plus system just shortly before Pro Tools HD was announced.

> Absolutely. I need to go to Guitar Center an buy my latest 6.01 upgrade
> if I want to stay on the treadmill.

We're still at 5.1.3.  We'd have to upgrade all of our plug-ins to MacOS X
versions if we switched to PT6 :(

> Yep, this is a problem. My solution was to use a 1394 drive for my audio
> drive, both under Pro Tools (Win XP) and Linux. It then doubles as a
> simple way to get data between boxes if I don't want to spend time
> messign with getting Samba working...

This sounds like a great solution.  In a pinch, it would also be away of
getting files between here and the studio.  I'll definitely have to look
into that.

> > For what it's worth, I've also posted my XF86Config:
> > http://www.comevisit.com/NorthernSunrise/latency/XF86Config
> > It has a few things I need to fix, but nothing that I think would affect
> > audio performance.
>
> I'm terrible at kernel configuration, so I hope someone else will help
> more with this part.

?
I'm confused by what you quoted.  XF86Config is my X configuration.  .config
is my kernel configuration.

> OK, I certainly get how this has happened, but I eventually tricked my
> Dell P3 500 box that runs GigaStudio into playing nice. It was no fun
> though. Here's the short version of the story...

Thanks, I'll try your technique as soon as I can make the time.

> The thing you probably want to understand is that right now every
> Ethernet packet that arrives has higher priority than your sound card or
> your disk drives. IRQ11 beats IRQ14/15 for the disks or IRQ5 for the
> sound card.

Yup - this irks me to no end, but I wasn't able to fix it in my initial
effort.

> So, if your Ethernet adapter is a card, take it and the sound card out,
> put the sound card in the Ethernet slot, and then reboot and see what
> you get.

This was the first thing I tried.  Same IRQ asignments even after the
change.  I'd look up the BIOS settings so I could better explain the
problem, but my Linux box is building a new kernel right now.

> Possibly. Not sure. I don't remember building drivers for mine, but
> that's another PC than this one.

Come to think of it, I'm not sure whether I've even looked for the drive
under Linux since I plugged it in.  It might actually be there.  I suppose
I'd have to build the controller drivers in order to access the drive at any
reasonable speed, however.

|)
|)enji

Benjamin Flaming
--------------------
"The trouble with computers, of course, is that they're very sophisticated
idiots."