[mythtv-users] IVTV recordings glitch every 302 seconds

Robin Gilks g8ecj at gilks.org
Sat Jul 7 22:09:29 UTC 2007

> On Saturday 07 July 2007 13:00:27 Robin Gilks wrote:
>> > Yup, you have heard the term "it happens every 5 minutes" and it
>> > does - plus a couple of seconds!!
>> I have found one clue - I've turned off EIT on the DVB-S card (which
>> I was using to get schedule info on the radio channels) and the
>> glitches have gone away.
> It's almost certainly the scheduler query. The eitscanner fires as long
> as it inserts new data a scheduling run. It has a safeguard against
> firing a reschedule too often and the minimum interval between two
> scheduler runs are exactly 5 minutes.
> Janne

Is there any mysql optimisation I can do to improve this or is it another
threading issue where the scheduling is done by the recording thread or
something equally daft.

I regularly run optimise_mythdb and the db appears to have updated
correctly during the last 2 years of SVN updates so the extra indexes etc
introduced a few months ago should all be active (is there a way to check

The db is on a raid1 array that shares a disk with the raid5 array that
stores the recordings (i.e. one partition of the drives is part of the
raid1, another partition a part of the raid5). Is there anything that
could be optimised here?


Robin Gilks

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