[mythtv-users] Viewing recorded programs page in mythweb is slow

[Andrew Kuan]

So I did a bit of experimenting as well. I altered two files in my copy of
mythweb from the end of the 0.19-fixes branch:

   - I commented out line 207 in modules/tv/recorded.php so that
   "generate_preview_pixmap" wouldn't get called.
   - I hacked up themes/default/tv/recorded.php so that it looks directly
   in my /var/video directory for thumbnails rather than checking its own
   cache. I then had to make sure that Apache could follow a symlink off to
   where those thumbnails (and all of my recordings) are stored.

After I made these two changes, the Recorded Programs page was suddenly
loading in a couple seconds with all of the thumbnails showing -- except for
shows that are currently being recorded.

While this solves it well enough for me, I do still have a few misgivings:

   1. No thumbnail will be available for shows currently being recorded.
   2. I don't like having my /var/video directory exposed to the rest of
   the world -- which is probably why the cache was set up in the first place.
   3. The next time I update mythweb, I'm going to have to rehack my
   files to keep things chugging along.

It looks like the real solution would be to fix the generate_preview_pixmap
function in the first place. It's in includes/mythbackend.php at line 226.
I'm going to poke at it for a bit right now before I head off to work.
Thanks for the feedback, Niels -- it's sort of reassuring to know that
someone else is putting up with this behavior too.

On 5/1/06, Niels Dybdahl <Niels at dybdahl.dk> wrote:
>
> > b) looking at the timestamps, a handful of .png files (nine to be
> > exact) keep getting re-created everytime I view the Recorded Programs
> > page of mythweb.
>
> Mythweb checks the modification timestamp for the recording in the
> database and compares it with the creation date of the thumbnail.  If
> the thumbnail is too old, it requests a new one from the backend.  This
> means that either your database is somehow corrupt and has timestamps
> set in the future, or you're changing (that include playing) the
> recordings.
>
> I have the same problem, so I checked in my mythweb/data/cache folder.
> I opened  the recorded shows in MythWeb and 439 out of 528 thumbnails were
> regenerated.
> A couple of minutes later I refreshed the web page and this time 418
> thumbnails were regenerated. I could not watch so many shows in such a short
> time and I do not think that all these entries should be corrupt. None of
> them have dates in the future.
> I just tried once more and all 418 thumbnails from second try were
> regenerated, so the 21 (439-418) that were not regenerated in the second and
> third try could have been played or new since last time I used MythWeb.
> The 418 shows consists of all recorded with 0.18.1 and numerous recorded
> with 0.19 including those recorded today.
>
> Niels Dybdahl
>
>
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