Opened 14 years ago

Closed 14 years ago

#1229 closed defect (wontfix)

LiveTV channel change takes a long time

Reported by: dag@… Owned by: Isaac Richards
Priority: minor Milestone: unknown
Component: mythtv Version:
Severity: medium Keywords:
Cc: Ticket locked: no

Description

SVN version: 8871

The sequence to generate this was:

  1. start MythTV
  2. Press "Watch TV". Wait until you get picture.
  3. Change channel Wait again.

4 kill Myth

With the risk of angering the goods I attach the logs. And I WILL continue debugging Isaac, but not until Friday when I am back.

Attachments (3)

mythfront.log.err (76.0 KB) - added by dag@… 14 years ago.
Frontend log
mythtv.log.err (30.3 KB) - added by dag@… 14 years ago.
Backend log
changetimes.txt (1.2 KB) - added by pekka.jaaskelainen@… 14 years ago.
table of channel change times with the tested revisions

Download all attachments as: .zip

Change History (9)

Changed 14 years ago by dag@…

Attachment: mythfront.log.err added

Frontend log

Changed 14 years ago by dag@…

Attachment: mythtv.log.err added

Backend log

comment:1 Changed 14 years ago by dag@…

This works fine in 8867.

comment:2 Changed 14 years ago by Isaac Richards

(In [8876]) Speed Oscar's program transitions up a bit, hopefully.

Also refs #1229, and the ticket about slow DVB startup. Should improve, if not fix, both of those.

comment:3 Changed 14 years ago by Isaac Richards

Resolution: fixed
Status: newclosed

(In [8891]) Fix problem with things getting slightly confused with tiny files (ie, the dummy recorder produced files from waiting for channel lock in dvb) in livetv.

Should fix #1229.

comment:4 Changed 14 years ago by pekka.jaaskelainen@…

I think this is not yet fixed. More information in the mailing list thread...

comment:5 Changed 14 years ago by pekka.jaaskelainen@…

Resolution: fixed
Status: closedreopened

The channel change seems to slow down at changeset 7961.

Changed 14 years ago by pekka.jaaskelainen@…

Attachment: changetimes.txt added

table of channel change times with the tested revisions

comment:6 Changed 14 years ago by danielk

Resolution: wontfix
Status: reopenedclosed

[7961] is the LiveTV changes commit for DVB.

Nothing to fix here.

The only way to speed this up would be to implement a video-less signal monitoring stage. That might make sense for #926. I'll help anyone who wants to implement that for 0.20, but it's not a priority for me. There is some code to support that in SVN because this is how I initially implemented signal monitoring, but it is not a simple feature to add.

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