[mythtv-users] Recordings slow to start?

[HP-mini]

On Wed, 2015-07-01 at 21:20 -0500, Richard Shaw wrote:
> On Wed, Jul 1, 2015 at 9:11 PM, Frank Phillips <frankalso at gmail.com>
> wrote:
>         On Wed, Jul 1, 2015 at 8:50 PM, Richard Shaw
>         <hobbes1069 at gmail.com> wrote:
>         
>                 Ever since I upgraded to a 2TB HD and expanded my 2
>                 tuner HDHR-ATSC to include a 3 tuner HDHR-Prime I've
>                 noticed that my recordings take a long time to start,
>                 up to 10 seconds.
>                 
>                 
>                 Since it can't take that long to find a file my
>                 assumption is that it's loading the recordseek table
>                 that's taking so long.
>                 
>                 
>                 I occasionally use the Optimize button in mythweb and
>                 recently tried the optimize_mythdb perl script but it
>                 doesn't seem to have helped.
>                 
>                 
>                 I also occasionally run mysqld_tuner and apply the
>                 recommendations.
>                 
>                 
>                 Anywhere else I should look?
>                 
>                 
>         
>         
>         Hard drive idle head parking? See hdparm -B/-J 
> 
> 
> I'll take a look but I doubt it, happens even after just finishing
> watching a recording and it's not a green drive.
> 
You can change the settings on the green drives with linux tool
"idle-something" if you did have green HDDs.

If you start playback of a recording in the period 1 minute after
recording has finished, you are guaranteed to get 10 sec delay.
I believe this is a file status bug.
This is the only time I get any start delay (database on SSD).

I think there is a file playback probing issue that causes some delay,
if the start of the recording file is not "clean".
Check in mythtv-setup that recordings are set to start on mpeg2-SEQ (==
SPS for H264).

HTH