<br><br><div><span class="gmail_quote">2008/1/25, Florent Berthaut <<a href="mailto:hitmuri@no-log.org">hitmuri@no-log.org</a>>:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div bgcolor="#ffffff" text="#000000"><div><span class="e" id="q_117afe1e1e8d6f28_1">
Fernando Lopez-Lezcano a écrit :
</span></div><blockquote type="cite"><div><span class="e" id="q_117afe1e1e8d6f28_3"><br><blockquote type="cite"><pre>Ok finally, i tried to disable the second core ( i have a dual core<br>2GHz) and things get really better this way, i can lauch more<br>
applications with 4,8ms latency and no xruns. I had already disabled<br>cpuspeed but it looks like it was not enough. <br> </pre>
</blockquote>
<pre>That points to a realtime kernel problem with (probably) timekeeping in<br>two core processors (ie: "time of day" is not perfectly synchronized<br>between the processors so that if jack migrates from one to another it<br>
appears as there has been too much delay and things don't work as<br>intended). I have seen this happen in 2.6.23.x + rt14. <br><br>What happens if you boot dual core with the "idle=poll" kernel<br>parameter? (I assume this happens with 2.6.22.x). <br>
<br>-- Fernando<br> </pre></span></div>
</blockquote>
<br>
Looks like it solves the problem, even the 2.6.23.x (latest ccrma
kernel) works well with this parameter.<br>
Thanks.<br>
<br>
Florent</div></blockquote><div><br>Hi, I would like to know how did you disable your 2nd core ? Does it affect the general performances ?<br>Thanks<br><br>Mysth-R<br></div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
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