Subject: Re: [linux-audio-dev] An outlandish suggestion
From: Josh Green (jgreen_AT_users.sourceforge.net)
Date: Fri Feb 21 2003 - 10:15:22 EET
On Wed, 2003-02-19 at 18:32, Jonathan Turner wrote:
> After trying to track down the cause of xruns, I was just wondering if there
> is a way to run... I dunno, kinda like a meta test for jack and see just why
> you are xrun'ing?
>
> I know people have probably asked this umpteen times, but I was wondering if
> there was a way to say, automate various tests and keep a load on jack and
> watch to see if it xruns during any of the tests...
>
> Then, after it's done, it gives you a report of what you need to do to tweek
> your system.
>
> Just thinking outloud.
>
> Jonathan
I haven't been doing a whole lot of latency tweaking as of late.. But
back when I was, I used latencytest:
http://www.gardena.net/benno/linux/audio/
Its basically plays an audio test signal and then runs a series of tests
(X drawing, hard disk read/write, etc) and then gives you some nice
graphs to look at.
I think the preempt kernel patch has a feature that will keep track of
the most recent large latency spikes, although I have never tried
enabling it. The lowlat patch I think also has some debugging related
stuff. If you don't know about these patches already, you'll definately
want to check them out. Also IDE hard disk tuning. You might already
know these things, just trying to cover as much as possible. Cheers.
Josh Green
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