Re: [Jack-Devel] Everything works with JACK, but I always got "Cannot lock down ..." message at startup

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DateWed, 05 Dec 2012 17:26:52 +0100
From Adrian Knoth <[hidden] at drcomp dot erfurt dot thur dot de>
To[hidden] at lists dot jackaudio dot org
In-Reply-ToJeremy Jongepier Re: [Jack-Devel] Everything works with JACK, but I always got "Cannot lock down ..." message at startup
Follow-UpStéphane Letz Re: [Jack-Devel] Everything works with JACK, but I always got "Cannot lock down ..." message at startup
On Wed, Dec 05, 2012 at 05:18:08PM +0100, Jeremy Jongepier wrote:

> >-P 95 seems pretty high, but if
> >you're fine with it, why not.
> 
> Doesn't the watchdog run at a prio 10 higher than JACK's prio? So in
> this case it would run at 105 but that isn't possible. Could this
> cause issues?

No:

static int
jack_start_watchdog (jack_engine_t *engine)
{
        int watchdog_priority = engine->rtpriority + 10;
        int max_priority = sched_get_priority_max (SCHED_FIFO);

           if (max_priority < watchdog_priority)
                watchdog_priority = max_priority;



HTH

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