[mythtv] Watching Live TV & method TV::GetChannelInfo getting called every second

Isaac Richards ijr at po.cwru.edu
Thu Jul 15 15:39:16 EDT 2004

On Thursday 15 July 2004 03:27 pm, J. Donavan Stanley wrote:
> Isaac Richards wrote:
> >On Thursday 15 July 2004 02:10 pm, Tako Schotanus wrote:
> >>Isaac Richards wrote:
> >>>On Thursday 15 July 2004 12:43 pm, Buechler, Mark R wrote:
> >>>>Admittedly, I'm working with a two day old copy of CVS but I've seen
> >>>> this for a few weeks now. I see on my backend mysqld running at 45-55%
> >>>> CPU and the frontend taking more CPU than it should as well. I tracked
> >>>> it down to a SQL statement running every second getting channel
> >>>> information while watching live TV.
> >>>>
> >>>>I was wondering if anyone might know why
> >>>
> >>>LCD info updater.  I didn't realize it was going every second, I'll bump
> >>>it up a lot, or actually, now that I look at this, I don't think it's
> >>>thread safe at all..
> >>
> >>Sorry, had no idea that GetChannelInfo would hit the database so much.
> >>It did this every second so you could see program info changes while
> >>watching live tv.
> >>
> >>So now I've got two questions because I really want this to work (and
> >>I'm not the only one for sure).
> >>
> >>1. Is there a way to get this channel information without hitting the
> >>database so much? (Is there a function that does local caching of the
> >>results for eample?)
> >
> >Why not just check every minute or so, instead of every second?
> Or check it 1) When the channel changes 2) when the current program is
> over.  That way you have the least impact possible, and you have up to
> date info.

It's much easier to just change the timeout, though, which is why I suggested 


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