On Fri, Feb 24, 2006 at 06:59:17PM -0700, Brad Waite wrote: > Kris Kennaway wrote: > >On Fri, Feb 24, 2006 at 06:47:49PM -0700, Brad Waite wrote: > >>Hi all, > >> > >>Been having problems with my Tyan Thunder i7500 (S2720) dual Xeon > >>running -STABLE: it's hanging every couple of days. > >> > >>I couldn't find any specific fixes on the lists, but I did come across > >>some instructions about breaking into the debugger from a serial > >>console. I built a kernel with the following options: DDB, KDB, WITNESS > >>& BREAK_TO_DEBUGGER (INVARIANTS wouldn't build). > > > >Perhaps you forgot INVARIANT_SUPPORT. > > Thanks, Kris. I didn't know I needed it (just going by some > instructions on the list). What does INVARIANTS do, anyway? Will it > help troubleshoot this problem?
Yes, it enables lots of runtime checks, so it's quite important when trying to diagnose kernel problems. Kris
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