[mythtv-users] backends without tuners (was Re: Transcoding is being done on frontends, not backend)

Bill Williamson bill at bbqninja.com
Thu Jan 8 23:58:00 UTC 2009


On Fri, Jan 9, 2009 at 10:47 AM, Brad DerManouelian
<myth at dermanouelian.com>wrote:

> On Jan 8, 2009, at 3:42 PM, Craig Sanders wrote:
>
> > On Thu, Jan 08, 2009 at 01:57:17PM -0800, Brad DerManouelian wrote:
> >>> "Remove" meaning don't run it--don't uninstall it.
> >>
> >> Curious as to why you recommend leaving the backend installed on a
> >> frontend machine. If there are no tuners on the machine, it's not
> >> good
> >> and even potentially harmful to run.
> >
> > since when is it harmful?
> >
> > i have BE installed on all my FE boxes (mostly amd64 workstations with
> > myth installed so we can watch TV & videos at our desk if we want)
> > just
> > to make use of additional CPU power while transcoding multiple shows
> > at
> > once. it works fine. i start the transcoding jobs manually after
> > editing
> > out the ads...sometimes there are 8 or more transcoding jobs running
> > at
> > once.
> >
> > in fact, myth's network-centric model was the main reason i switched
> > from running VDR to myth last year....was waiting for multirec. since
> > then, i've gone from VDR w/ one tuner card on one machine (plus an
> > xbox
> > running xbmc) to myth w/ 5 tuner cards on 4 machines (with the xbox
> > retired).
> >
> <cut a bunch of setup stuff>
>
> Running mythbackend without tuners is an unsupported configuration.
> You will get warning messages about it and may break in some cases (or
> in the future) and no one will fix it because it's unsupported. It's
> only by chance that it's working for you.
>
> The supported method of running jobs on other machines that do not
> have tuners is to run mythjobqueue.
>
>


Is this still true?  About a year ago I was reccomended a "master backend
without tuners" setup (all storage on master backend, all tuners on
net-booting slave backends) on this very list...
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