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<TITLE>Re: [mythtv-users] Request info from working M10K frontend.</TITLE>
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<P><FONT SIZE=2 FACE="Courier New">>With XvMC and .18 on the frontend only Epia, I am seeing roughly 20% </FONT>
<BR><FONT SIZE=2 FACE="Courier New">>cpu usage, which makes this problem even stranger. About 3% cpu on </FONT>
<BR><FONT SIZE=2 FACE="Courier New">>hardware interrupts, 3% on software interrupts, and 0% wait. That's </FONT>
<BR><FONT SIZE=2 FACE="Courier New">>what's making me think network latency now, and checking out the shared </FONT>
<BR><FONT SIZE=2 FACE="Courier New">>video/ethernet interrupts situation.</FONT>
<BR><FONT SIZE=2 FACE="Courier New">></FONT>
<BR><FONT SIZE=2 FACE="Courier New">>Now that I have a disk in there, and no longer need net boot, I'm going </FONT>
<BR><FONT SIZE=2 FACE="Courier New">>to try a nic in the pci, and see if I can get it on a different </FONT>
<BR><FONT SIZE=2 FACE="Courier New">>interrupt that way, just for giggles.</FONT>
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<P><FONT SIZE=2 FACE="Courier New">I struggled for about 4 months to get this working. I created a diskless M10K based on</FONT>
<BR><FONT SIZE=2 FACE="Courier New">FC2 and built the unichrome drivers, DRM and everything else. I built Myth 0.17 with XvMC</FONT>
<BR><FONT SIZE=2 FACE="Courier New">and had pretty much the same problems. Lots of prebuffering and stuttering on playback.</FONT>
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<P><FONT SIZE=2 FACE="Courier New">I also compiled xine with h/w decoding support and got that working quite well. I tried</FONT>
<BR><FONT SIZE=2 FACE="Courier New">all sorts of stuff to get Myth working correctly including putting dual NICs in the B/E one</FONT>
<BR><FONT SIZE=2 FACE="Courier New">dedicated to the F/E boot and Myth traffic. I rebuilt a minimal boot from scratch using the</FONT>
<BR><FONT SIZE=2 FACE="Courier New">Linux from Scratch resources - same issues. I did network perf tests, bought a cable tester and</FONT>
<BR><FONT SIZE=2 FACE="Courier New">found a couple of dodgy patch cables - still no joy. I put in a hard disk and found things </FONT>
<BR><FONT SIZE=2 FACE="Courier New">got somewhat better (it would only stutter at startup) but then if I skipped forward or </FONT>
<BR><FONT SIZE=2 FACE="Courier New">backwards in a stream I had to save the position and stop and restart the stream as it </FONT>
<BR><FONT SIZE=2 FACE="Courier New">stuttered so badly afterward.</FONT>
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<P><FONT SIZE=2 FACE="Courier New"><sigh> My M10K is now back in the back room on my bench. I've reverted to my physically larger</FONT>
<BR><FONT SIZE=2 FACE="Courier New">Athlon XP 1800 + Geforce 4MX frontend in the family room which I rebuilt with FC3 and had up and</FONT>
<BR><FONT SIZE=2 FACE="Courier New">running fine in about 4 hours. I'm not as happy with the quality of the video out as I was with</FONT>
<BR><FONT SIZE=2 FACE="Courier New">the Epia's but it has never stuttered once (and that's without any h/w decoding on). I have tweaked</FONT>
<BR><FONT SIZE=2 FACE="Courier New">it with the nvidia-settings tool which has improved it somewhat.</FONT>
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<P><FONT SIZE=2 FACE="Courier New">Last night I did a clean Fedora install on the M10K (to a local disk) but I only got as far as an </FONT>
<BR><FONT SIZE=2 FACE="Courier New">apt-get dist-upgrade before hitting the sack. I was planning to start from scratch with DRM, </FONT>
<BR><FONT SIZE=2 FACE="Courier New">Unichrome X11, etc testing at every install to try and track down the issue. I bought the Epia </FONT>
<BR><FONT SIZE=2 FACE="Courier New">specifically for a diskless, small form factor front end and so far it's caused only grief and </FONT>
<BR><FONT SIZE=2 FACE="Courier New">a total lack of Wife Appreciation whilst I was trying to make it work. :(</FONT>
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<P><FONT SIZE=2 FACE="Courier New">BTW - has anyone gotten the new VIA open source Unichrome driver to work with recent releases ? </FONT>
<BR><FONT SIZE=2 FACE="Courier New">I had a very quick look but the docs in the distribution seemed a bit poor and I haven’t looked at </FONT>
<BR><FONT SIZE=2 FACE="Courier New">them in depth.</FONT>
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<P><FONT SIZE=2 FACE="Courier New">I'll post any progess I make so who knows, between us perhaps we can crack it :)</FONT>
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<P><FONT SIZE=2 FACE="Courier New">Cheers</FONT>
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<P><FONT SIZE=2 FACE="Courier New">Paul</FONT>
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