Subject: [linux-audio-dev] Linux 2.6 not a latency panacea?
From: Joshua Haberman (joshua_AT_haberman.com)
Date: Thu Aug 14 2003 - 01:09:10 EEST
I am distressed. It was my understanding that the 2.5/2.6 kernel branch
was undergoing significant scheduler and latency work, and that 2.6
would eliminate the kernel from the list of obstacles of low-latency on
Linux. It will have the preemptable kernel patch, the new scheduler,
and all of Ingo Molnar's low-latency work. Claims were being thrown
around that 2.6 would be the lowest-latency operating system on the planet.
So how is it that we're in the 2.6.0-test series and people are
complaining about audio skipping in **XMMS**, which uses three second
buffers by default?? If people are getting skips from high-latency
playback, what hope is there for low-latency audio? A series of patches
are coming from both Ingo and Con Kolivas attempting to address this,
but the fact they are just now throwing around potential solutions
erodes at my faith that they really understand the problem or how to
solve it.
Is 2.6.x going to be suitable for low-latency (or even reliable
high-latency) audio? Or is it going to be more of the same: patching
the kernel, tweaking parameters, reading magical incantations, and
hoping for the best?
Reassure me please!
Josh
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