[mythtv-users] LiveTV channel switching time
mcnallychris at pobox.com
Sun Dec 17 15:02:37 UTC 2006
> Date: Sat, 2 Dec 2006 02:37:06 -0500
> From: Chris Pinkham <cpinkham at bc2va.org>
> > With your inuseprograms table and knowledge of which disks and
> > encoders are in use, would it be possible to do these tasks
> > when the system is quiet?
> I believe so. The housekeeper could do something like this:
> void HouseKeeper::RunHouseKeeping(void)
> if ((wantToRun("DailyDBTasks", 1, 0, 24)) &&
> That way the backup/optimize never actually runs until the system is idle.
> With this, it may make sense to include a script that does do the check,
> optimize, and backup. The name could be a setting if the user chose to
> use their own, but otherwise we'd use the stock one. Could probably take
> advantage of or extend the perl bindings some for this.
> Anything that is recording or in use by some form of playback should be in
> the inuseprograms table. The only notable exceptions that I know of
> for this are MythArchive and nuvexport when it's not using mythtranscode.
> That makes it easy to check whether we're idle or not. That covers
> the MythTV portion. We know nothing about plugins, but we probably don't
> care either.
>Does this also manage to avoid system-about-to-become-nonidle?
>E.g., you want to make sure the optimize/backup doesn't -start-
>within some configurable time (on the order of a couple of minutes)
>of when any encoder is -going- to be busy. This requires at least
>some interaction with the scheduler, but no more than MythWeb's
>"Status" page has.
I'm not sure what you guys are talking about and how this relates to LiveTV channel switching, However I like the idea of scheduled MYSQL backups and other daily jobs that won't interfere with upcoming recordings. I think this could be started by Mythwelcome. When the system is idle, and there are no recordings about to start (in a configurable period of time) Mythwelcome will set the next time to wake up and then run the shutdown command. In addition, perhaps it could kick off a daily job if there is one, and wait again for the idle time.
The Mythwelcome doc is on the wiki:
Mythwelcome will also prevent the backend from shutting down the system if it is busy commercial flagging, downloading EPG data, transcoding or shutdown has been locked by a user.
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