[mythtvnz] Minimum CPU for FreeviewHD

[Robin Gilks]

> ----- Original Message -----
> From: "Nick Rout" <nick.rout at gmail.com>
> To: <stephen at jsw.gen.nz>; "MythTV in NZ" <mythtvnz at lists.linuxnut.co.nz>
> Sent: Saturday, February 27, 2010 1:13 PM
> Subject: Re: [mythtvnz] Minimum CPU for FreeviewHD
>
>
>>I have also come to the conclusion that a separate beackend is the way to
>> go.
>
> Yes I'm attracted to this conclusion also - which then asks the question
> what is currently the minimum CPU / RAM requirement for a
> backend (with no frontend) ?    While I haven't tried yet I expect a
> single core 2000 would be underutilised, presuming no
> commflagging is sought.  A 1000 or less also may still be fine?  Anyone?
>
> Also the HDHomeruns I recall only use a 100M NIC and they stream TV3 fine
> using UDP with network rates upto 14mbps, according to
> their GUI.

I'm running an ASUS M3N78PRO on my backend as it has the 8300 Nvidia GPU
onboard so I can run the frontend as well if required. A low power CPU

vendor_id       : AuthenticAMD
cpu family      : 15
model           : 107
model name      : AMD Athlon(tm) Dual Core Processor 5050e
stepping        : 2
cpu MHz         : 1000.000
cache size      : 512 KB

with 4Gigs of RAM and 5T of disk in a raid5 array which yields 4T of space
for LVM to split up as required - a separate 160G drive handles the OS.

That, 2 Technisat DVB-S cards, a PVR 150 for the Sky box and a Genius TVGO
USB DVB-T stick draws 80w which includes the Sky box, the UPS and the ADSL
modem :-)

I'm using the on-demand CPU governor so it spends most of its time at 1GHz
per core but will crank up to 2.8GHz if required. I think in some parts of
the world its been superceded by the M4N78pro which still has the 3 PCI
slots for tuners (thats why I bought mine) and the same 8300 graphics bu
the older version can be had here for under $200.

As far as 100M Ethernet and TV3 is concerned - be assured that the
transmission rate is a LOT less than 100M - in fact the whole mux is only
25M if I recall correctly and that includes other channels on top of the
TV3 datastream...


-- 
Robin Gilks