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First of all, for the record, anyone who equates firsthand
experiences with snakeoil, shall find their words completely ignored
by yours truly :-) <br>
<blockquote
cite="mid:A548D1C9-AE32-40AF-8F9B-A6EADEA7B3BE@gmail.com"
type="cite">
<div>First of all, booting into console mode, rather than running
the full blown desktop seemed to eliminate most of the problems,
although it’s still not quite a stable as i’d like.</div>
<div>Also i don’t quite understand how all of that could interfere
with my RT-thread.</div>
<div>This was going to try and install a more minimal system
anyway, and don’t need a graphical environment for this, but
during developments it’s kind of nice to have.</div>
</blockquote>
Check your processes with htop. Make sure none of the
resources-eating background items remain.<br>
<blockquote
cite="mid:A548D1C9-AE32-40AF-8F9B-A6EADEA7B3BE@gmail.com"
type="cite">
<div><br class="">
</div>
<div>I still would like to see how far i can take this, and was
really hoping i can continuously use 80-90% of all cpu cores
without dropouts…</div>
<div>Is that realistic with a lowlatency kernel? <br>
</div>
</blockquote>
In my experiences this is not realistic with either a realtime
kernel or a lowlatency kernel, unless you can afford large latency
times, using large audio buffers. This is because in a low latency
situation, the CPU has to have a lot of free cycles available to be
ready to handle everything which comes. <br>
<br>
I do think you will probably see more stability if you use JACK in
such efforts, or even PulseAudio, than if you use direct ALSA. I
have found ALSA to be great for drivers, not anywhere near so good
for the transport phases. <br>
<blockquote
cite="mid:A548D1C9-AE32-40AF-8F9B-A6EADEA7B3BE@gmail.com"
type="cite"><br class="">
<blockquote type="cite" class="">Cron should also be turned off,
but that is probably not the problem here. Cron runs super
"nice" but there seem to be some things it does like packge
update that can cause problems too. I turn off cron while
recording.<br class="">
</blockquote>
</blockquote>
I have never had to turn cron on an otherwise well-approached
environment.<br>
<blockquote
cite="mid:A548D1C9-AE32-40AF-8F9B-A6EADEA7B3BE@gmail.com"
type="cite"><br>
<div>I don’t have a wireless on my machine, nor an nvidia card.
just intel builtin graphics. This where my linux knowledge falls
short, but If i don’t have that hardware, can I assume no
drivers for it are loaded?</div>
</blockquote>
Yep, no problem there.<br>
<blockquote
cite="mid:A548D1C9-AE32-40AF-8F9B-A6EADEA7B3BE@gmail.com"
type="cite">
<div><br class="">
</div>
<blockquote type="cite" class="">
<div><br class="">
AFAIK, the important things are.<br class="">
<br class="">
1. Use a properly configured realtime patched kernel.<br
class="">
<br class="">
</div>
</blockquote>
<div class=""><br class="">
</div>
<div class="">lowlatency-kernel is not going to cut it?</div>
</blockquote>
Lowlatency is just fine if you have the CPU for it, and lowlatency
is a whole lot easier to set up now, with the Liquorix people on the
ball like they are.<br>
<blockquote
cite="mid:A548D1C9-AE32-40AF-8F9B-A6EADEA7B3BE@gmail.com"
type="cite">
<div class="">I wasn’t really able to find to much info on the
difference between the two, other than than the rt-kernel is a
“step up” and hard realtime vs soft.</div>
<div class="">But nothing on how this is technically achieved</div>
</blockquote>
On my production box, with my Behringer Firewire FCA202, I have
found slightly better results using a Liquorix kernel than with a
realtime-patched kernel. Liquorix has a whole lot of interesting
optimizations. I would imagine that if my CPU were not what it is,
and/or the load type different, the differences would probably be
considerably greater, and I have no thought as to which side it
would land on.<br>
<br>
<div class="moz-signature">-- <br>
<div style="color: #993300; font-size: 0.8em; font-style: italic;">
Jonathan E. Brickman <a class="moz-txt-link-abbreviated" href="mailto:jeb@ponderworthy.com">jeb@ponderworthy.com</a> (785)233-9977<br>
Hear us at <a href="http://ponderworthy.com">http://ponderworthy.com</a>
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