[mythtv] Ticket #1219: LiveTV takes a while to start, and video jerks forwards

[Pekka Jääskeläinen]

OK,

I've now finished the search for the changeset that slowed the channel
change down. It seems to be 7961. The slowdown is from about 6 to 10
secs. Attached is a
table of tested revisions and their channel change times. I hope this
helps to nail
the problem. I suppose that when the OSD got disabled in my previous
tests, also
the signal monitoring stuff got disabled, that's why the slowdown was
not there.
Only an amateur guess, though.

I'm available at IRC for debugging help.

On 2/11/06, Pekka Jääskeläinen <pekka.jaaskelainen at gmail.com> wrote:
> Now I have to redo the changeset search with OSD enabled in each revision.


--
--PJ
-------------- next part --------------
Channel change times with OSD enabled:
     tv1 -> tv2 tv2 -> mtv3 mtv3 -> subtv    average
6946 6 sec      7 sec       6 sec            6.3 sec
7448 6 sec      8 sec       8 sec            7.3 sec
7449 7 sec      7 sec       6 sec            6.7 sec
7500 6 sec      8 sec       7 sec            7.0 sec
7600 6 sec      6 sec       7 sec            6.3 sec
7650 6 sec      8 sec       6 sec            6.7 sec 
7900 14 sec     15 sec      14 sec           14.3 sec
7927 7 sec      7 sec       7 sec            7.0 sec 
7957 6 sec      6 sec       7 sec            6.3 sec
7960 6 sec      6 sec       6 sec            6.0 sec
7960 6 sec      6 sec       6 sec            6.0 sec
7961 9 sec      10 sec      HANG!
7961 10 sec     10 sec      9 sec            9.7 sec
7965 9 sec      9 sec       10 sec           9.3 sec
7970 10 sec     9 sec       10 sec           9.7 sec
7983 12 sec     10 sec      10 sec           10.7 sec
8038 10 sec     10 sec      15 sec           11.7 sec
8500 10 sec     10 sec      11 sec           10.3 sec
8916 16 sec     15 sec      13 sec           14.7 sec


Notes:
7700, 7730, 7737 hangs (signal monitor says n% signal where n is low, 20 or under)
7738-7926 LiveTV disabled