[mythtv-users] CPU Speed Question

[Mike Wood]

I thought about that too actually, however, I only recently moved to the dual box arrangement.  Since the spring I had been running everything on one box, my current backend machine.  My channel changes really didn't seem to be impacted by moving to the dual box setup.  If they were, it wasn't noticeable without a stopwatch.  :-)  




> -------- Original Message --------
> Subject: Re: [mythtv-users] CPU Speed Question
> From: "kim gross" <kgross at jensalt.com>
> Date: Thu, November 27, 2003 8:35 pm
> To: "Discussion about mythtv" <mythtv-users at mythtv.org>
> 
> mike at woodsnest.com wrote:
> 
> >I've got a question about channel changing speed.  Now, I'm not trying
> to start a long debate about how to "fix" it, I know that's been done,
> and some of you guys are probably looking into it.  My question really
> relates to how channel change speed might be, or might not be, affected
> by cpu speed.  I run the frontend on an Epia M-10000 Nehemiah board. 
> My backend is running in the basement with a PIII 666mhz and a PVR 250.
>  So, neither of my CPUs is particularly powerful.  My backend used to
> act as both front & back before I recently got the EPIA to cool & quiet
> things down in the Family Room a bit.  Anyway, with either of these 2
> boxes as my frontend, channel changing is delayed...I've never timed
> it, but I'd say its generally 2-3 seconds, maybe 4 or even 5 sometimes.
>  I love myth and haven't really taken much issue with this until
> tonight.
> >Tonight, for Thanksgiving I'm over my brother-in-laws and last night
> he installed myth for the first time...using KnoppMyth (which he loved
> by the way!).  He installed on a shuttle, with a 2.4ghz P4 and a PVR
> 250, and his channel changing is much faster than mine.  Again, we
> didn't actually time it, but I'd guess his cuts my time almost in half.
>  That's pretty significant.
> >
> >So now I'm wondering how his is so much faster than mine.  My boxes
> are both RH9, his again is KnoppMyth.  His CPU is obviously a heck of a
> lot faster than mine.  Other than that, we're both using the PVR250, we
> both have 7200rpm harddisks.  He just installed last night and went to
> bed, so he has done absolutely nothing to tweak his box.  I do believe
> in KnoppMyth the livetv buffer is stored on a ext2 partition..while
> mine is on a ext3.
> >
> >So back to the original question.....could this difference be related
> to CPU?  If you don't think so....any other thoughts as to why there's
> such a significant difference?
> >
> >  
> >
> I know one simple thing that will effect the speed.  His is on one 
> machine yours is on 2.  No network latency involved in your brother in
> 
> laws setup, while in  yours you have to wait for the backend to change
> 
> channels and then spool enough data for the frontend to start playing.
> 
> Kim
> 
> 
> _______________________________________________
> mythtv-users mailing list
> mythtv-users at mythtv.org
> http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users