[mythtv-users] Channel guide is way too slow

Friedrich Clausen fred at derf.nl
Mon Nov 10 11:57:55 UTC 2008


On Sun, Nov 9, 2008 at 3:06 PM, Rob Rosenfeld
<rob+mythtv-users at rosenfeld.to> wrote:
> On Sat, Nov 8, 2008 at 4:17 PM, Brad DerManouelian
> <myth at dermanouelian.com> wrote:
>> On Nov 8, 2008, at 1:14 PM, Jelle De Loecker wrote:
>>> Hi everyone,
>>> So I have +/- 2500 channels in my channel list, the perks of using
>>> satellite television.
>>> When I try to open the guide it takes about 50 seconds for it to load.
>>> "Browsing" in this lists takes a while, too. When I press up or down
>>> it
>>> can sometimes take a few seconds.
>>> This is what happens on my dual core system, so you can imagine what
>>> happens on my poor, little Apple TV! (running Mythbuntu)
>>> Once I've tried to "hide" most of the channels in the channels table.
>>> (Nearly all, I only had 20 channels left) but that didn't do much
>>> for my
>>> Apple TV frontend: it was still browsing WAY too slow.
>>> I've read that disabling channel icons can help, but it really didn't.
>>> Mind you, I'm NOT even talking about the guide in live tv. I'm talking
>>> about the regular kind, the one you can get to in the menu.
>>> I'm using the trunk of mythtv, btw.
>> Missing icons can make for a VERY slow guide as it tries to find each
>> one to display (and fails). Are you seeing channel icons?
> A database server with insufficient resources will also make guide very slow.

Another possible cause may also be your choice of de-interlace filters - See


As the reference above says, switching to something other than BOB
deinterlacing may help. However, the long EPG startup time can best be
solved with the DB "Optimize tables" script that comes with MythTV.
And other DB tuning probably.



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