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0.19 (R5B7) Slow entering LiveTV
http://forums.linhes.org/viewtopic.php?f=17&t=9088
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Author:  jimsoft [ Sun Mar 19, 2006 1:10 pm ]
Post subject:  0.19 (R5B7) Slow entering LiveTV

Hi all,

Have completed a test installation of R5B7 in the hope of improving LiveTV performance, but it has made it worse. With R5A3x entering LiveTV took about 3-4 seconds, with R5B7 this has almost doubled.

Anyone else seeing something similar or is it just me?

Jim.

Author:  cesman [ Sun Mar 19, 2006 1:55 pm ]
Post subject: 

No. Not here. It would help if you gave information on your hardware. There seems to be any issue w/ DVB-T.

Author:  jimsoft [ Sun Mar 19, 2006 2:10 pm ]
Post subject: 

Did think about listing some hardware but the fact that 0.19 is worse than 0.18.1 seemed to indicate that it is not hardware related. Just fot the record it's a P4 celeron with 384MB RAM, MSI mobo with onboard SIS video & 2 x Nova-T DVB cards (one older Philips chipset & one newer connexant chipset).

Jim.

P.S. Just as a reference can you tell me approx how long it takes you to get LiveTV up from hitting the button.

Author:  Alibloke [ Sun Mar 19, 2006 4:48 pm ]
Post subject: 

I have 3 DVB-T (conexant) cards running on a Barton 2.5Gig system with 512Mb RAM and I'm getting much slower buffering in live TV. To make things worse CPU usage seems to be much greater in 0.19. I also thought an "upgrade" to 0.19 would help my live TV troubles......

EDIT: After tweaking the kernel a bit (namely CPU type) it's running a little quicker. Also XVMC seems to keep things to a minimum. Anyone got any other tweaks?

Author:  irobot [ Sun Mar 19, 2006 10:21 pm ]
Post subject: 

I am experiencing slow Live TV performance on 0.19 as well.
Hardware:
P4 1.8
1GB RAM
Gigabyte Mobo
PVR-350
300GB HD

0.18.1 use to took 3 seconds, 0.19 takes over 7 seconds

Author:  jacobsa [ Tue Mar 21, 2006 5:38 am ]
Post subject: 

Also having a lost slower times entering live tv and changing channels.

r5b7 is great, and this is pretty much the only issue I have had so far.

athlon 1800, 700 odd mb of ram, 1 x dvico dvbt card, 1 x avermedia dvbt card in Aussie land...
________
Easy vape vaporizer

Author:  jimsoft [ Tue Mar 21, 2006 9:12 am ]
Post subject: 

Thanks for all your input, sometimes it gives you hope when you know your not the only one with a problem. Some others are having difficulties too...

http://www.gossamer-threads.com/lists/m ... ers/182935

and there's a trac ticket too describing a similar problem....

http://svn.mythtv.org/trac/ticket/1511

I hope some of the Dev's are working on this one.

Jim.

Author:  yamez [ Sun Mar 26, 2006 2:43 am ]
Post subject: 

Same experience here. I would put the delay down to ver 0.19 recording ALL LiveTV. I'm not a channel flipper ( I'm not intending to offend anyone ) so the delay does not bother me. Can LiveTV recording be switched off? If so, see if that makes a difference. LiveTV recording takes up much space on DVB-T recordings especially if the user leaves LiveTV on accidently ( 2 GB per hour ), thats why I transcode DVB-T recordings to MPEG-4. Transcoding will not be an option with LiveTV recording.

Author:  Xsecrets [ Sun Mar 26, 2006 9:35 am ]
Post subject: 

no turning off the recording of livetv is not has never been and most likely never will be an option in mythtv.

Author:  bearwood [ Mon Mar 27, 2006 1:38 am ]
Post subject: 

I too have a slower startup and channel change but I thought it might be due to slowness getting signal lock. I have to look at my Antenna as the recent cyclone may have moved it a bit.

Author:  yamez [ Fri Mar 31, 2006 6:28 am ]
Post subject: 

Xsecrets wrote:
no turning off the recording of livetv is not has never been and most likely never will be an option in mythtv.


I think you misunderstand what I mean. Can you make LiveTV behave like it did in Myth 0.18? i.e. NOT record to /myth/tv folder by default. I seem to be having problems with the LiveTV recording taking preference over scheduled recordings. I will need to do more testing. But I would just like to switch it off for now. Like it was in Myth 0.18, no temporary LiveTV recordings in the /myth/tv folder.

Author:  Xsecrets [ Fri Mar 31, 2006 8:50 am ]
Post subject: 

not that I'm aware of.

Author:  IceburgIV [ Fri Mar 31, 2006 12:35 pm ]
Post subject: 

R5B7 -> if it helps, I noticed the slow LiveTV as well.

Intel P4
384 MB of RAM
PVR-250
GeForce 5200

-Nick

Author:  yamez [ Mon Apr 03, 2006 8:10 am ]
Post subject: 

MythTV 0.19 is recording LiveTV ALL the time. i.e. as I switch from channel to channel, the LiveTV of each channel change is recorded at least for 1 day depending on your settings. This semi-permanent recording of LiveTV is illogical and IS creating problems ( at least with DVB-T ). NOTE: This problem did NOT occur with MythTV 0.18 on the SAME hardware. MythFrontend has quit twice when switching to LiveTV and the backend has quit once ( never happened with 0.18 ). There must be a way of switching it off. This is not a whinge at KnoppMyth developers, I'm just making people aware of the problem. The MythTV developers must know about this too.

Author:  Xsecrets [ Mon Apr 03, 2006 12:14 pm ]
Post subject: 

I guess you need to go file a bug report over on mythtv. There is nothing knoppmyth development can do about this, and once again I'm 98% certain there is no way to turn it off, but only the mythtv developers could tell you 100%. Note most people myself included are not having problems with it, other than it's a bit slower than it used to be. Not really sure why it's slower, because I can start a recording and get to within 3 sec of live, but if I do livetv I can only get 5-7sec of live.

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