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Date: Tue, 07 Feb 2012 11:50:09 +0200
From: Andriy Gapon <avg@FreeBSD.org>
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To: Julian Elischer <julian@FreeBSD.org>
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Cc: FreeBSD Stable <freebsd-stable@FreeBSD.org>,
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Subject: Re: kernel debugging and ULE
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on 06/02/2012 07:52 Julian Elischer said the following:
> so if I'm sitting still in the debugger for too long, a hardclock
> event happens that goes into ULE, which then hits the following KASSERT.
> 
> 
>                KASSERT(pri >= PRI_MIN_BATCH && pri <= PRI_MAX_BATCH,
>                     ("sched_priority: invalid priority %d: nice %d, "
>                     "ticks %d ftick %d ltick %d tick pri %d",
>                     pri, td->td_proc->p_nice, td->td_sched->ts_ticks,
>                     td->td_sched->ts_ftick, td->td_sched->ts_ltick,
>                     SCHED_PRI_TICKS(td->td_sched)));
> 
> 
> The reason seems to be that I've been sitting still for too long and things have
> become pear shaped.
> 
> 
> how is it that being in the debugger doesn't stop hardclock events?
> is there something I can do to make them not happen..
> It means I have to ge tmy debugging done in less than about 60 seconds.
> 
> suggesions welcome.

Does this really happen when you just sit in the debugger?
Or does it happen when you let the kernel run?  Like stepping through the code,
etc....

-- 
Andriy Gapon