<html><br />On Thursday, December 19, 2013 08:13 CET, Gary Buhrmaster <gary.buhrmaster@gmail.com> wrote:<br /> <blockquote>On Tue, Dec 17, 2013 at 8:42 AM, Marius Schrecker<br />wrote:<br />....<br />> The only things I don't uinderstand is why I should notice a further improvement when raising both cores<br /><br />Unless you are setting process processor affinity, any process<br />might get dispatched onto any processor. If one processor is<br />running slower, and that is where MythTV gets dispatched....<br /><br />Process affinity is an advanced topic, but can produce<br />dramatic benefits (or really bad results) depending on your<br />specific workload (and tuning).<br /><br />Note that Linux has had "soft" affinity since (I think) 2.5.<br />That means that once a process is dispatched on a processor,<br />it will tend to stay on that processor, but only until "something<br />happens" to cause it to change to another (where it will
tend<br />to stay for some period).<br />_______________________________________________<br />mythtv-users mailing list<br />mythtv-users@mythtv.org<br />http://www.mythtv.org/mailman/listinfo/mythtv-users</blockquote>Thanks for the reply Gary,<br /><br /> but even when running at 800MHz, neither of the cores is stressed and can easily handle the video processing overhead (playback data indicates around 15% cpu usage at lowest frequency. Does each core have a dedicated bus that is throttled at lower cpu freqs?<br /><br /><br /> </html>