Terve,<div><br></div><div>This sounds like a denormal problem. Try disabling all plugins and then try duplicating the issue. If the problem is gone, enable each plugin one by one to figure out where the issue is. Denormals can be caused by bad plugins and/or bad parameters for plugins.</div>
<div><br></div><div>Ardour has different denormal protection schemes (Options -> Performance -> Denormal handling -> ...). But be sure to first check that the plugin parameters are sane (for examples EQ parameters extremely close to zero but != 0).</div>
<div><br></div><div>More on denormals: <a href="http://ardour.org/node/139">http://ardour.org/node/139</a></div><div><br></div><div><br></div><div> Sampo</div><meta http-equiv="content-type" content="text/html; charset=utf-8"><div>
<br><div class="gmail_quote">On Sat, May 7, 2011 at 1:00 PM, Mark Veltzer <span dir="ltr"><<a href="mailto:mark.veltzer@gmail.com">mark.veltzer@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
Hello all!<br>
<br>
First of all - thank you for a wonderful piece of software...<br>
<br>
I've searched the archives for these types of bugs before reporting but<br>
only found reports dating 5 years ago so here goes...<br>
<br>
I'm recording with ardour, and then playing back (with some plugins,<br>
fairly standard). When I pause the playback ardour consumes 100% CPU.<br>
When I move the head back to the begining of the tune CPU consumption<br>
goes does to about 10%.<br>
<br>
So two questions:<br>
- why 100% when I'm doing nothing ?<br>
- why 10% when I'm doing nothing ?<br>
<br>
Some info:<br>
Ubuntu 11.04.<br>
kernel 2.6.38-8.<br>
I have the old firewire stack installed on it (since ffado needs<br>
the old stack).<br>
jack version 1.9.7.<br>
Ardour version 2.8.11.<br>
<br>
Again, thank you (Paul and all) for a wonderful piece of software. My<br>
windows friends are envious...:)<br>
<br>
BTW: I am a software developer knowledgable in Linux kernel as well as<br>
user space. If you have some menial task please assign it to me. I don't<br>
have a lot of time but what I have I will gladly contribute...<br>
<font color="#888888"><br>
--<br>
Mark Veltzer <<a href="mailto:mark.veltzer@gmail.com">mark.veltzer@gmail.com</a>><br>
<a href="http://www.veltzer.net" target="_blank">www.veltzer.net</a><br>
<br>
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</font></blockquote></div><br></div>