[mythtv-users] Stutter with a P3 933Mhz! Gezzz - more STUTTER!

john roberts homepagez at lycos.com
Thu Sep 2 08:33:55 EDT 2004


Ok - here is another data-point on my stutter issues.

I tried to play back a recording and it also stutters.  (Unless I pause it for a few sec's and then un-pause it).

Does that help point to the issue?

Thanks!

-John

----- Original Message -----
From: "john roberts" <homepagez at lycos.com>
Date: Wed, 01 Sep 2004 09:54:06 -0500
To: "Discussion about mythtv" <mythtv-users at mythtv.org>
Subject: Re: [mythtv-users] Stutter with a P3 933Mhz! Gezzz - more STUTTER!

> 
> I haven't changed any of the default settings for:
> 
> - Capture resolution
> - Encoding
> 
> TOP shows the CPU busy about 70%.  At this point - I don't think it's a CPU speed issue - since I was orig using a P3 500Mhz and it was performing about the same.  Stutter may have gotten a bit better.
> 
> What capture resolution/encoding are you using?
> 
> ----- Original Message -----
> From: "Michael J. Lynch" <mlynch at gcom.com>
> Date: Wed, 01 Sep 2004 08:53:49 -0500
> To: Discussion about mythtv <mythtv-users at mythtv.org>
> Subject: Re: [mythtv-users] Stutter with a P3 933Mhz! Gezzz - more STUTTER!
> 
> > I use a P3 750 Mhz system with 384Meg and don't experience anything like 
> > this and my machine is both front and back end.  What do top show for 
> > idle time when this is occurring?  What capture resolution are you 
> > using?  What type of encoding?
> > 
> > 
> > john roberts wrote:
> > 
> > >Lots of great email/feedback.  Thanks everyone.
> > >
> > >Here are the answers to some of the questions:
> > >
> > >- DMA is on (hdparm reports DMA as being on for both the HD and the CDROM)
> > >- I'm using the latest nVidia driver and is set to Driver "nvidia" in XF86Config
> > >- I think the Network stuff is 3com and Linksys
> > >- I've even tried to overclock the CPU to bring it up to 966Mhz (vs. 933)
> > >
> > >So - I'm still confused why I'm getting stutter with NTSC content.  I still have to "pause" and "un-pause" to get it smooth.
> > >
> > >I've even tried changing the AGP setting in XF86Config to use the onboard vs. the nVidia support.  No real change (if at all).
> > >
> > >So - any other ideas?  thanks again everyone for the support.
> > >
> > >-John
> > >
> > >----- Original Message -----
> > >From: Ben Stanley <bds02 at uow.edu.au>
> > >Date: Wed, 01 Sep 2004 19:29:18 +1000
> > >To: Discussion about mythtv <mythtv-users at mythtv.org>
> > >Subject: Re: [mythtv-users] Stutter with a P3 933Mhz! Gezzz - more STUTTER!
> > >
> > >  
> > >
> > >>Check whether you have dma turned on - check the MythTV documentation in
> > >>the troubleshooting page.
> > >>
> > >>Ben.
> > >>
> > >>On Wed, 2004-09-01 at 00:12, john roberts wrote:
> > >>    
> > >>
> > >>>Well - after upgrading my P3 500Mhz CPU to a P3 933Mhz the stutter is better while playing live NTSC TV - but it's still there during live-tv.  I have to hit "p" (pause) and then un-pause it to remove all stutter.
> > >>>
> > >>>What is the min footprint for a MythTV frontend????  My other myth box is a front/backend combo with a PVR-250 and a pcHDTV card and I don't seem to have a stutter problem with it (P4 2.6G HT CPU).
> > >>>
> > >>>I've tweaked everything I can think of:
> > >>>
> > >>>- I've re-niced the mythtv process and the X process like others have done
> > >>>- I've checked with TOP and it's not a memory issue (running 256M and not using SWAP at all)
> > >>>- I've compiled with -march=pentium3
> > >>>
> > >>>Have I missed anything?  Is a P3 just not capabile of being a frontend?
> > >>>
> > >>>Here are the details:
> > >>>
> > >>>Frontend/Backend combo:
> > >>>- P4 2.6G HT (512M)
> > >>>- nVidia FX5500
> > >>>- PVR-250
> > >>>- pcHDTV
> > >>>- Latest CK's IVTV driver
> > >>>- Latest CVS of MythTV
> > >>>- 100Mbps NIC
> > >>>
> > >>>Frontend:
> > >>>- P3 933M (256M)
> > >>>- some old nVidia card (AGP card)
> > >>>- Latest CVS of MythTV)
> > >>>- 100Mbps NIC
> > >>>
> > >>>Network:
> > >>>- 100M switch
> > >>>
> > >>>-John
> > >>>      
> > >>>
> > >
> > >  
> > >
> > >>_______________________________________________
> > >>mythtv-users mailing list
> > >>mythtv-users at mythtv.org
> > >>http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
> > >>    
> > >>
> > >
> > >  
> > >
> > 
> > -- 
> > Michael J. Lynch
> > Gcom Inc.
> > 
> > 
> > "What if the hokey-pokey IS what it's
> > all about?" -- author unknown
> > 
> > _______________________________________________
> > mythtv-users mailing list
> > mythtv-users at mythtv.org
> > http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
> > 
> 
> -- 
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