On Wed, 2009-12-09 at 22:03 -0800, Jeff Campbell wrote: > Hi Group, > > Just wondering what experience, if any, is out there with running more > than 2 cx18 based cards under mythtv in the same box.
Brandon Jenkins has 3 in a box and an HD-PVR connected via USB (IIRC) blog: http://tvwhere.wordpress.com/ LMML: [email protected] Mike Krufky had 5 in a box at one time (IIRC). blog/company: http://kernellabs.com/ LMML: [email protected] IRC: #v4l and #linuxtv @ freenode.net > I have a possibly urgent need to run up to five analog tuners in a > mythtv backend deployment and was considering a large motherboard with > 5 X PCI slots and a beefy powersupply, running 5 of the HVR-1600s. > > Any knowledge on if this works or any reason it shouldn't if we're > theorizing? It should work. I would certainly recommend a machine with more than 2 CPU cores. You will not avoid having two cards share an interrupt line - avoid using those simultaneously for best results. PCI bus bandwidth will probably the limiting factor, if you perform 5 MPEG PS and 5 VBI captures at once. Perhaps a PCIe card solution would be more appropriate. Of course that's probably a whole new learning curve or set of quirks to discover, when one is used to CX23418 based cards. You may want to contact Kernellabs.com, who consult on such issues: http://www.kernellabs.com/blog/?p=1123 if the need is critical enough. Because my free advice, at times, can be worth every penny you pay for it. ;) Regards, Andy > Thanks, > > -Jeff _______________________________________________ ivtv-devel mailing list [email protected] http://ivtvdriver.org/mailman/listinfo/ivtv-devel
