[mythtv-users] Anyone running a diskless frontend?

[Aaron Stewart]

Well, there ya go.. I told you I might be making it up :).

Cheers,
Aaron

On Thu, 2003-02-13 at 01:09, Bruce Markey wrote:
> Aaron Stewart wrote:
> > I dunno.. It seems like network transfer of data is adding another level
> > of complexity that could be avoided, but if sound dampening is
> > necessary, then it's a necessary evil :).
> > 
> > My understanding was that an uncompressed mpeg2 stream ran at
> > 18mbits/sec, which translates to:
> > 
> > send->18mbit
> > recv<-18mbit
> > buffer->18mbit (for delayed playback)
> > 
> > Means that you're using about half of a 100baseTX connection (depends on
> > the card.. duplex notwithstanding).
> > 
> > I might be making all this up.. It's rather late at night..
> 
> Sure. I'll call you on that ;-). Proposing that there need to
> be 3 18mbit streams is an amazing fabrication and you still
> only say that's half the bandwidth. Still you did a good job
> of making all this up 8-).
> 
> Send AND recv? I assumed frontends meant "mythfrontend"
> with no tuner. If you had a diskless machine with a tuner
> you could have data going in both directions. But if you get
> a tuner card, it obviously makes more sense to put it in the
> machine with the disk.
> 
> Buffer? You are watching one recording. You can call it
> recv or buffer but not both (nice try ;-)!
> 
> Uncompressed? Running mythfrontend on a different machine
> than the backend pulls the compressed data over the net.
> Even if you use NFS, the files are compressed and decoded
> locally. MythTV decoding is surprisingly lightweight.
> If your recordings are 1.5GB/hour that's still less than
> .5MB/sec. That's less than 5mbit leaving 95mbit idle net
> with nothing to do.
> 
> If a 100mb net can't keep up, something else must be
> terribly wrong. I've tested running a remote frontend
> over phone net (PNA 2.0) and even that worked for medium
> resolution recordings (however, I'm not recommending phone
> net as a solution ;-).
> 
> --  bjm
> 
> 
> 
> 
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