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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> mythtv-users-bounces@mythtv.org [mailto:mythtv-users-bounces@mythtv.org] <b>On Behalf Of </b>Joseph Fry<br><b>Sent:</b> Tuesday, September 11, 2012 10:26 PM<br><b>To:</b> Discussion about MythTV<br><b>Subject:</b> Re: [mythtv-users] ATSC Unwatchable<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><div><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in'><p class=MsoNormal>Do you mean running a hypervisor on the machine beside MythTV, or running<br>MythTV in a VM?<br><br>I've been running a CentOS 6 box with software raid 5, Silicondust ATSC<br>tuner, and VirtualBox with a Windows 7 VM all on the same box for months<br>with no problem. The MythTV has always been running on the base OS though,<br>not in the VM. Before that I ran a NextPVR (formerly GBPVR) instance under<br>a Windows 7 VM in VirtualBox with no problems at all for well over a year.<o:p></o:p></p><div><div><p class=MsoNormal style='margin-bottom:12.0pt'><br>-----Original Message-----<br>From: <a href="mailto:mythtv-users-bounces@mythtv.org">mythtv-users-bounces@mythtv.org</a><br>[mailto:<a href="mailto:mythtv-users-bounces@mythtv.org">mythtv-users-bounces@mythtv.org</a>] On Behalf Of Devin Heitmueller<br>Sent: Sunday, September 09, 2012 5:55 PM<br>To: Discussion about MythTV<br>Subject: Re: [mythtv-users] ATSC Unwatchable<br><br>On Sun, Sep 9, 2012 at 4:47 PM, Keith Wait <<a href="mailto:kwait@alumni.rice.edu">kwait@alumni.rice.edu</a>> wrote:<br>> Here's an overview of my setup:<br>> xbmcbuntu (based on oneiric), running kernel 3.0.0-22-xen-dom0 (so<br>> running the xen hypervisor).<br><br>Wow, please seriously don't tell me you've been running a hypervisor all<br>this time and are just mentioning this now. If so, then you've just engaged<br>in a colossal waste of my time.<br><br>Hypervisors are not supported, in particular on the backend. They screw<br>with the PCI latency, causing packets to get dropped.<br><br>Think it's not the hypervisor? Prove it. Do a stock install of the OS<br>without the hypervisor and report back in if you're still having problem.<br><br>As an intermediate step, you may also wish to try a *current* LiveCD with<br>the same 3.0.0 kernel but not in hypervisor mode. At least that lets you do<br>an apples-to-apples comparison with the same kernel revision.<o:p></o:p></p></div></div></blockquote><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>First, don't top post.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Second... Xen works differently than VMware or Virtualbox... both of those operate ON TOP of an OS.... hypervisors like Xen and HyperV operate below the OS... the DOM0 OS is only there to manage the hypervisor, it's actually virtualized itself.<o:p></o:p></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>May I remind you that top (or bottom) posting is a preference. I say each to his own. Personally, I hate it when people bottom post. When I open a message I don’t like scrolling all the way to the bottom to see the new content. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I’m aware of how hypervisors operate. I wasn’t sure if the same PCI latency COULD be induced by running a hypervisor inside the base OS as opposed to running the OS on the hypervisor, which is why I asked for clarification. Each hypervisor/platform have their own intricacies, and I’m not familiar with Xen. I also don’t want to run into potential problems in the future with my own rig. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p></div></div></div></body></html>