DDB
Kris Kennaway
kris at obsecurity.org
Fri May 20 23:35:34 PDT 2005
On Fri, May 20, 2005 at 11:30:26PM +0200, Goran Gajic wrote:
>
>
> I have compiled my kernel with options SMP and with following
> options in hope that I will be able to drop into debuuger
> after fatal trap 12 (FreeBSD-5.4-STABLE). I have added following
> lines to my config:
>
> options KDB
> options KDB_TRACE
> options DDB
>
> Although dmesg | grep SMP says
> FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs
> SMP: AP CPU #3 Launched!
> SMP: AP CPU #1 Launched!
> SMP: AP CPU #2 Launched!
>
> top shows that processes are running only on CPU's 0 and 2.
> systat also shows:
>
> root idle: cpu0 XXXXXXXXXXXXXXXXXXX
> nobody squid XXXXXXXXXXXXXXXXXX
> root idle: cpu2 XXXXXXXXXXX
> root swi1: net X
>
>
> Is this normal, or am I missing something?
Do you really have 4 CPUs, or 2 CPUs with hyperthreading, which is now
disabled by default (see the recent security advisory)?
Kris
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