[mythtv-users] slow mythweb?

[Michael T. Dean]

On 04/21/2008 09:53 AM, Jens Baumeister wrote:
> Considering the extreme nature of your recording schedule, you're
> apprently running into some kind of bottleneck, but I have no idea
> which one.

The more shows you have scheduled to record, the longer scheduling 
takes.  Though the scheduler query may not be taking a lot of time, 
that's only part of the scheduling process.  In the event that your 
grabber provides programid's, the scheduler query will be the fast part 
of scheduling.

When multirec was being developed, scheduling was a big issue--even on a 
sufficiently powerful system.  Daniel, Janne, and Shane worked very hard 
to improve scheduling performance and got it back to pretty much the 
same as pre-multirec (maybe a little better).  The one distinction, 
however, is that with multirec, a user can enable significantly more 
recordings than they could in pre-multirec.  Therefore, users can create 
situations where their (especially, low-powered) systems can't handle 
the scheduling sufficiently quickly.  See 
http://www.gossamer-threads.com/lists/mythtv/dev/294301#294301 and the 
entire (5 page) thread at 
http://www.gossamer-threads.com/lists/mythtv/commits/265142#265142 (and 
many more posts about scheduler performance during the development of 
multirec).

So, like Jens said, it's quite likely that your pushing your system to 
an extreme is what's causing the performance issue--you're simply trying 
to do too much recording with too little MythTV resources.  If you 
really want to record everything with that system, you may need to find 
another program to do it.  Or, you can get a better system.  Or, you can 
try more systems (though you'll almost definitely need a more powerful 
master backend--as it's the one that does the scheduling).

Mike