<br><br><div><span class="gmail_quote">On 7/21/07, <b class="gmail_sendername">Steve MacLaren</b> <<a href="mailto:scram69@gmail.com">scram69@gmail.com</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<span class="q"><br><br><div><span class="gmail_quote">On 7/19/07, <b class="gmail_sendername">Patrick Ouellette</b> <<a href="mailto:pat@flying-gecko.net" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">
pat@flying-gecko.net</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
On Thu, Jul 19, 2007 at 09:04:39AM -0700, Steve MacLaren wrote:<br>><br>> I'm currently running with the AMD Athlon 64 X2 3600+ for broadcast HDTV<br>> playback. Having the second core available for commflagging is nice as
<br>> during HD playback, Xorg keeps one core between 90 and 100%.<br>><br>> Unfortunately there are too many boldface "?" on the wiki page to know for<br>> sure if this is the performance one should expect for this CPU. However the
<br>> strange thing is that I see no difference using XvMC or not. I have an<br>> Nvidia 6200 using the proprietary nvidia drivers (see the nvidia logo during<br>> login). So my results may not be "typical".
<br>><br><br>Do you have the xorg.conf option "UseEvents" set to true (if you are<br>using an NVIDIA driver that supports this option? I know on my single<br>core system this cut CPU usage way down on HD playback. I'm pondering
<br>upgrading to a dual core CPU so the data point would be nice.<br><br>Pat<br><br></blockquote></div></span>Thanks for the tip! I finally was able to give the "UseEvents" option a try, and it makes a huge difference using XvMC in CPU usage, for both SD and HD playback. Haven't had a chance to test w/o XvMC yet, but will try that as well.
<br><br>Again thanks for filling me in on "UseEvents". The Ubuntu how-to that I used to set up and install the nvidia drivers made no mention of it...<br><br>
</blockquote></div>A follow up - with "UseEvents" and playback of broadcast HD using "Standard" (ffmpeg), the frontend is using ~65% of one core, and Xorg another ~10%. Using "Standard XvMC", the frontend uses... ~65% of one core. So my performance is much improved and very manageable for this particular system, but strangely, I can't seem to see any effect of using XvMC.
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