[mythtv-users] Very slow EPG guide - movement, etc (XMLTV source, 66 channels)

Yeechang Lee ylee at pobox.com
Sun Feb 7 19:41:48 UTC 2010

David Kubicek <foceni at gmail.com> says:
> In fact, it's not odd at all if you notice that the progressive 
> deterioration of performance is based purely on increasing amount of 
> available EPG data. Perhaps most people don't use such abundant sources 
> or don't see so many days ahead (I have 13 days)

13 days is hardly unusual; anyone in North America using
SchedulesDirect has that much. Neither is 66 channels; my San
Francisco cable provider offers me a few multiples of that number,
plus more from over-the-air (although many overlap with cable

You mention using a (Custom?) "extremely detailed XMLTV grabber," but
the variety of details you list:

    long descriptions, sub-titles, ep info, complete credits,
    premiere/last-showing, icon URL's, rating, years, dates,
    categories, etc

is, again, nothing unusual for any SchedulesDirect user.

In other words, your setup isn't anything particularly demanding from
a MythTV perspective.

> I don't know, but that's not the point. Moving the guide selection
> from one program to the next shouldn't take 4sec even if I had 3yrs
> worth of data... :)

I don't disagree. That said, I can navigate the EPG reasonably well on
my more than four years-old frontend/backend (see below) whether with
a Live TV preview window in the corner or not. As Mike Dean advised
you, check your channel icons and their directory's permissions/mount

(Why are you using the EPG to schedule most of your recordings,
anyway? I use it occasionally, of course, but most of the time Program
Finder, or one of the searches in Search Words/Search Lists/Custom
Record, is more convenient.)

Frontend/backend:	P4 3.0GHz, 1.5TB software RAID 5 array
Backend:		Quad-core Xeon 1.6GHz, 6.6TB sw RAID 6
Video inputs:		Four high-definition over FireWire/OTA
Accessories:		47" 1080p LCD, 5.1 digital, and MX-600

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