In message <200002200154.RAA27618@lestat.nas.nasa.gov>Jason Thorpe writes
>On Sun, 20 Feb 2000 12:04:32 +1300 
> Dave Sainty <dave@dtsp.co.nz> wrote:
>
> > Most people have to do this by hand.  Wouldn't it be cool if there was
> > a small static circular buffer that could be read from kmem/core that
> > contained the output of ddb....
>
>We could change db_printf() to also send to msgbuf (DDB uses it for the
>--more-- facility).

... with the potential downside that, after lots of DDB activity,
you'll overfill the dmesg ringbuffer and no longer be able to
find the exact message that tripped you into ddb :).

If we do this, can we add a sysctl knob for the knowledgeable to
turn  on/off?