[mythtv] Specs for multiple encoder box?

Ray mythtv-dev@snowman.net
Mon, 25 Nov 2002 12:27:44 -0700

On Mon, Nov 25, 2002 at 10:09:23AM -0600, Robert Kulagowski wrote:
> Hash: SHA1
> I submitted a poll a few weeks ago and got back some good responses,
> but I'm still looking for data that would answer the question:  "How
> fast a CPU do I need for multiple encodes?"
> I believe the only data point we have now is Isaac's statement that
> his AMD XP1800+ can almost do two encodes + 1 decode.
> If anyone has multiple tuners in their system, please let me know
> what sort of CPU you've got, and what encoder/resolution you're
> using, along with what your load average is during recording.  I know
> that multiple encodes isn't only dependant on CPU; hard drive speed
> would be an issue as well, so whatever data you can provide would be
> appreciated.

You should be able to get most of the info you need without multiple tuners. 
Just manually encode a couple of yuv files simultaneously and look at what
frame rate you (and others) get.  It's important to use the same codec and
options that Myth uses and it wouldn't be perfect but it's a start.  

Do you plan to put up a table of the responses you're getting?  I think it
would be interesting to get an idea of what aspects of a system make the
most difference (Mhz vs SSE vs cache size etc).