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re: Sun IPX and PPS via serial port
> Printf out of the kernel not only goes in syslog, it comes out on the
> console ... with interrupts disabled while printing is in progress. This
> screws badly with time keeping - it's a very violent event (relatively
> speaking). Every time I see one (I've got a "stray interrupt" problem
> with the old SS5 thing I'm using), I see a .3 second delay in system
> time keeping which ntpd then has to correct.
i kind of want to fix this, and not for the reason you'd like :)
kernel console output is not handled like userland output. it is
done with a polling method, and that is what locks out some of the
other interrupts during this time.
the reason i want to fix it is that it is one of the causes stray
interrupt messages for MP systems.
i have, unfortunately, no time frame for this some if someone else
would like to have a go at it please do!
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