[mythtvnz] Channel changing time

[Steven Ellis]

On Wed, December 5, 2007 8:28 pm, Stephen Worthington wrote:
> On Wed, 05 Dec 2007 17:01:49 +1300, you wrote:
>
>>Really?  cool.
>>
>>It had some warning about "Don't do this on an underpowered box".  So it
>>seemed like the perfect job for the new back end while it waits for its
>>capture cards to be purchased =)
>>
>>
>>Dean
>
> My box is not at all underpowered (Athlon 64 X2, 1 Gibyte RAM), but I
> regularly get it to record 4 programs at once off two dual tuners
> (hardware MPEG-2), and then do commercial skip processing on all four
> programs, at the same time as I am playing back one more program. That
> is a total of 9 video streams at once.  With good hard disks (7200 rpm
> Seagate Barracudas), it works fine.  You do hear the disks though, as
> they are very busy.  I was surprised that it worked when I first tried
> it, but I guess I have been using too many Windows boxes and my
> expectations were dulled by that.  Linux can use the full throughput
> of a hard disk properly.  And it caches well too, so I expect that the
> commercial skip processing may well be mostly using the cached data
> and not needing much real disk access.

One reason we switched to X2 processors for myPVR was commercial skipping..
You don't want all of your CPU tied up when you have two or more tuners
performing capture.

Steve

--------------------------------------------
Steven Ellis - Technical Director
OpenMedia Limited - The Home of myPVR
email   - steven at openmedia.co.nz
sales   - sales at openmedia.co.nz
support - support at openmedia.co.nz
website - http://www.openmedia.co.nz