[mythtv-users] Graphite theme slow in "Watch Recordings"
myShade
myshade at bredband.net
Fri Oct 9 06:47:30 UTC 2009
On Thu, 2009-10-08 at 14:34 -0400, Michael T. Dean wrote:
> On 10/08/2009 01:36 PM, Jim Stichnoth wrote:
> > On Thu, Oct 8, 2009 at 10:07 AM, Michael T. Dean wrote:
> >
> >> On 10/08/2009 10:17 AM, Jim Stichnoth wrote:
> >>
> >>> I see something similar, except that for me, Graphite and mythbuntu
> >>> are slow, and metallurgy and blue-abstract are fast, when moving
> >>> between recorded programs. It doesn't matter whether I use the QT or
> >>> OpenGL painter.
> >>>
> >>> I watched the output of "top" while this was happening on the slow
> >>> themes. Each time I moved to a different recording, the mythbackend
> >>> process would pop up. I think it's being used to regenerate a preview
> >>> image for the recording, and apparently it's either not caching the
> >>> preview image, or not recognizing that the preview image is already
> >>> cached.
> >>>
> >> Chances are you need to fix your system clocks. Look for the big warning
> >> about differing times in your frontend log file.
> >>
> > What --verbose setting would I need to see these warnings?
> >
>
> You'll get a warning at important level if the master backend's clock
> time is >20s different from that of the local host:
>
> Warning! Time difference between the master backend and this system is
> <X> seconds
>
> Note that you may still have problems with image caching even if you
> have >0 but <20 seconds time difference.
>
> > Another related question. I saw some discussion of putting image
> > loading in a separate thread so that the UI doesn't hang while the
> > image is loaded. Yet this doesn't seem to be happening for these
> > preview images. Even in the "fast" themes where moving between
> > recorded items is quick, there is still a 1-2 second delay on my
> > system, during which the UI is unresponsive, when mythbackend does
> > first-time generation of the preview image. Is that the expected
> > behavior?
>
> Make sure you're on current (top-of-tree) trunk--and make sure you're
> actually running that version (i.e. if it seems it's not doing what it's
> supposed to, you may have old libs getting in the way).
>
> And, you do need to fix caching problems before it will work properly.
> See, also, my last message about NFS mounting.
>
> Mike
I cleaned everything out, but still no go.
I have FE/BE on the same machine. Graphite is the only theme affected.
Thinking all those trans*.png and rec*.png has something to do with it,
since no other theme i tried have this flash on "selected item" in
"watch recording" menu.
No TV related stuff is on NFS. Since other themes works fine i cant
think its a cache or "head on performance" issue.
Guess i have to leave the favorite theme for some time ;9
Still problems are ment to be solved.......
Fredrik
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