[ATrpms-users] Second MythTV 0.20 second has high CPU utilization problem...

[AWC Lists]

Hi,
This is an odd one, but I'll try and explain.  I was in the middle of 
setting of a frontend/backend box and a frontend box to go along with 
everything.  A little background info:

I was planning on going with 0.19 but on the day I was going to yum 
install mythtv-suite, the 0.20 release was available from ATRPMS.  I 
installed this first release (with the known issue with the MythWeb 
page) and it went perfectly onto my Front/Backend box.    Live OTA HDTV 
was perfect, playing recording HDTV was perfect as well.  (Everything 
was just fine.)  CPU utilization was around 60-70% while playing back 
HDTV OTA programming.

I managed to put together my Frontend box a few days later, and by that 
time the updated version of the 0.20 was available at ATRPMS.  I decided 
to put this version onto my Frontend/Backend box as well thinking it 
would be no big deal. 

Big mistake.  I now get incredibly high CPU utilization with (95-100% 
according to top) on both boxes when trying to watch live TV or watch 
recorded programs.  The video stutters a lot.  (Plays for 4-5 seconds 
and then pauses... repeating this constantly.)  So it has become 
unusable.  Fortunately the recording is actually working fine; I can 
drop out of Myth and play the recorded programs in mplayer standalone 
with very low CPU utilization. 

I did not change anything on the frontend/backend box except install the 
latest MythTV release.  The frontend box is quite powerful so it should 
not have problems either.  (This "new" frontend box was actually running 
0.19 as a standalone Frontend/backend box without any problems before I 
started this whole upgrade to two boxes.)

Has anyone else experienced this spike in CPU utilization?  It looks 
like something has changed to cause this.  I tried looking for the old 
version to downgrade to (to test if this fixes the problem), but I could 
not see it on ATRPMS anymore for FC5.  (It could be there... this is the 
first time I have used ATRPMs before so I am not too sure where to look.)

Questions:
- How can I downgrade to the first 0.20 on ATRPMS to test if this fixes 
the problem?  (yum remove mythtv-suite and then yum install 
mythtv-suite-0.20-???.fc5 ????)
- Is anyone else experiencing these problems?  I noted quite a few folks 
on the MythTV list talking about high CPU utilization and the one common 
thread appeared to be they are using ATRPMS for their source.

Here are the box specs:

Frontend/backend:
P4 2.8 Ghz, Fedora Core 5, Nvidia FX5200, 1GB RAM.  80GB WD HD for OS, 
three WD 320GB drives set as a RAID0 array for storing programs
Frontend:
P4 3.0 Ghz, Fedora Core 5, Nvidia FX6200, 1GB RAM.  One 80GB WD drive.

Thanks in advance for any help/advice about this problem.

Cheers.