[mythtv-users] MythTV frontend/backend race condition?
swlists at mit.midco.net
Wed Feb 18 20:36:02 EST 2004
I have been playing with MythTV for about 3 months or more now trying to
get one machine to be both a frontend and a backend (for now at least).
First let me say it works great when it works. I'm about at my whits
end, and I'm *gasp* even considering getting a Tivo again after I went
and sold mine (I sooo don't want to get another one). My MythTv machine
is as follows:
Abit NF7-S V2
1 PVR-250MCE (actually 2 but only 1 is in the machine as of right now)
This is all running on kernel 2.4.22 (also tried 2.6.2) on Gentoo using
MythTV 0.14 and ivtv drivers 0.19
The problem I have been having is that if I start up mythbackend and
then start mythfrontend and fire up live TV, everything appears to work
great for somewhere between 4-8 hours then the video/audio get really
really choppy (progressively more so as time goes on). If I ssh into
the machine I see mythfrontend and mythbackend are both competing for
100% of the cpu (backend using 49.1 frontend using the rest, when mythtv
is running normally it is using around 1-2% of the cpu or less). On the
terminal where mythfrontend is started I see "prebuffering pause" about
once a second or sometimes more than once a second. One other thing is
that if I kill mythfrontend at this point (with a: killall mythfrontend)
then the mythbackend thread that was using all the cpu also goes away.
I have tried everything besides swapping out the CPU/Ram, some of the
things I've tried:
Tried a 2.4 and a 2.6 kernel.
Updated nvidia drivers to the latest ones (5336 I think as of now).
Swapped out the motherboard for another.
Tested my memory in the machine for about 3 days straight using memtest86.
Tried different versions of mythtv (0.13 and 0.12, and latests cvs).
Tried different versions of ivtv
Tried turning off/on every possible option related to recorded TV in MythTV.
A couple of questions:
Does anyone else run somewhat the same setup I run (I know some people
run w/ this same exact motherboard and many people use the nforce2
chipset), and if so is it stable watching live TV for extended periods
Can anyone offer any suggestions on what can fix this problem?
More information about the mythtv-users