<HTML><BODY style="word-wrap: break-word; -khtml-nbsp-mode: space; -khtml-line-break: after-white-space; "><DIV>Steve -</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>My system does see a CPU spike as the errors are happening and just as the backend crashes.</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>I know you were looking into this a few months ago. Was there ever a resolution? Was there a kernel or buffer issue?</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>- Andrew</DIV><BR><DIV><DIV>On Jul 23, 2006, at 11:44 PM, <A href="mailto:mythtv-users-request@mythtv.org">mythtv-users-request@mythtv.org</A> wrote:</DIV><BR class="Apple-interchange-newline"><BLOCKQUOTE type="cite"><P style="margin: 0.0px 0.0px 0.0px 0.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica">Date: Sun, 23 Jul 2006 22:07:42 -0400</FONT></P> <P style="margin: 0.0px 0.0px 0.0px 0.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica">From: "Steven Adeff" <<A href="mailto:adeffs.mythtv@gmail.com">adeffs.mythtv@gmail.com</A>></FONT></P> <P style="margin: 0.0px 0.0px 0.0px 0.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica">Subject: Re: [mythtv-users] Motorola 6200 firewire high def artifacts</FONT></P> <P style="margin: 0.0px 0.0px 0.0px 0.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica"><SPAN class="Apple-tab-span" style="white-space:pre"> </SPAN>- Help<SPAN class="Apple-tab-span" style="white-space:pre"> </SPAN>me debug?</FONT></P> <P style="margin: 0.0px 0.0px 0.0px 0.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica">To: "Discussion about mythtv" <<A href="mailto:mythtv-users@mythtv.org">mythtv-users@mythtv.org</A>></FONT></P> <P style="margin: 0.0px 0.0px 0.0px 0.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica">Message-ID:</FONT></P> <P style="margin: 0.0px 0.0px 0.0px 0.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica"><SPAN class="Apple-tab-span" style="white-space:pre"> </SPAN><<A href="mailto:42785b900607231907t241bf8bfr8372bdc39e0f4c17@mail.gmail.com">42785b900607231907t241bf8bfr8372bdc39e0f4c17@mail.gmail.com</A>></FONT></P> <P style="margin: 0.0px 0.0px 0.0px 0.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica">Content-Type: text/plain; charset=ISO-8859-1; format=flowed</FONT></P> <P style="margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px Helvetica; min-height: 14.0px"><BR></P> <P style="margin: 0.0px 0.0px 0.0px 0.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica">On 7/18/06, <A href="mailto:greg@nodecam.com">greg@nodecam.com</A> <<A href="mailto:greg@nodecam.com">greg@nodecam.com</A>> wrote:</FONT></P> <BLOCKQUOTE type="cite"><BLOCKQUOTE type="cite"><P style="margin: 0.0px 0.0px 0.0px 20.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica">I am also trying to solve an issue with a Motorola firewire box.</FONT></P> <P style="margin: 0.0px 0.0px 0.0px 20.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica">Could you describe the artifacts you are seeing. Do they crash your</FONT></P> <P style="margin: 0.0px 0.0px 0.0px 20.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica">backend? Have you tried switching from a point-to-point connection to</FONT></P> <P style="margin: 0.0px 0.0px 0.0px 20.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica">a broadcast connection? Have you tried increasing the firewire speed</FONT></P> <P style="margin: 0.0px 0.0px 0.0px 20.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica">in MythTVSetup.</FONT></P> </BLOCKQUOTE><P style="margin: 0.0px 0.0px 0.0px 10.0px; font: 12.0px Helvetica; min-height: 14.0px"><BR></P> <P style="margin: 0.0px 0.0px 0.0px 10.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica">Basically it's like a skip in the stream - the whole screen goes very</FONT></P> <P style="margin: 0.0px 0.0px 0.0px 10.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica">blocky, then resolves itself.<SPAN class="Apple-converted-space"> </SPAN>When watching the NHL playoffs, it was</FONT></P> <P style="margin: 0.0px 0.0px 0.0px 10.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica">doing it every 10-20 seconds during play, making the game unwatchable.</FONT></P> <P style="margin: 0.0px 0.0px 0.0px 10.0px; font: 12.0px Helvetica; min-height: 14.0px"><BR></P> <P style="margin: 0.0px 0.0px 0.0px 10.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica">I can't get broadcast working, and firewire speed is set to 400 already</FONT></P> <P style="margin: 0.0px 0.0px 0.0px 10.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica">(though I'll have to check on that to confirm)</FONT></P> <P style="margin: 0.0px 0.0px 0.0px 10.0px; font: 12.0px Helvetica; min-height: 14.0px"><BR></P> <P style="margin: 0.0px 0.0px 0.0px 10.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica">The backend is still stable though, it's just frustrating not being able</FONT></P> <P style="margin: 0.0px 0.0px 0.0px 10.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica">to really use the system to record high def sports.</FONT></P> <P style="margin: 0.0px 0.0px 0.0px 10.0px; font: 12.0px Helvetica; min-height: 14.0px"><BR></P> <P style="margin: 0.0px 0.0px 0.0px 10.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica">I did some benchmarking on the hard drives, and they seem to be able to do</FONT></P> <P style="margin: 0.0px 0.0px 0.0px 10.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica">sequential writes plenty fast for HD - I'm wondering if I have a bad</FONT></P> <P style="margin: 0.0px 0.0px 0.0px 10.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica">firewire cable.<SPAN class="Apple-converted-space"> </SPAN>I guess replacing that is my next logical step.</FONT></P> </BLOCKQUOTE><P style="margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px Helvetica; min-height: 14.0px"><BR></P> <P style="margin: 0.0px 0.0px 0.0px 0.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica">does your cpu usage spike while recording?</FONT></P> <P style="margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px Helvetica; min-height: 14.0px"><BR></P> <P style="margin: 0.0px 0.0px 0.0px 0.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica">--<SPAN class="Apple-converted-space"> </SPAN></FONT></P> <P style="margin: 0.0px 0.0px 0.0px 0.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica">Steve</FONT></P> <P style="margin: 0.0px 0.0px 0.0px 0.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica">Before you ask, read the FAQ!</FONT></P> <P style="margin: 0.0px 0.0px 0.0px 0.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica"><A href="http://www.mythtv.org/wiki/index.php/Frequently_Asked_Questions">http://www.mythtv.org/wiki/index.php/Frequently_Asked_Questions</A></FONT></P> <P style="margin: 0.0px 0.0px 0.0px 0.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica">then search the Wiki, and this list,</FONT></P> <P style="margin: 0.0px 0.0px 0.0px 0.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica"><A href="http://www.gossamer-threads.com/lists/mythtv/">http://www.gossamer-threads.com/lists/mythtv/</A></FONT></P> <P style="margin: 0.0px 0.0px 0.0px 0.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica">Mailinglist etiquette -</FONT></P> <P style="margin: 0.0px 0.0px 0.0px 0.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica"><A href="http://www.mythtv.org/wiki/index.php/Mailing_List_etiquette">http://www.mythtv.org/wiki/index.php/Mailing_List_etiquette</A></FONT></P> </BLOCKQUOTE></DIV><BR></BODY></HTML>