On Wednesday 19 August 2009 2:30:25 am Pramod Srinivasan wrote: > Hi Folks, > > I have a difficult problem I am stuck with, we had ported LOCK_PROFILING to > FreeBSD 6.1 and is working fine on mips, but fails miserably on i386. > > Just enabling lock profiling by the sysctl causes the cpu to reset. > > r...@bcdcpu3% sysctl debug.lock.prof.enable=1 > debug.lock.pr? << cpu resets here > > Has any one seen similar issues? Any pointers on where to start debugging > this issue? > > The suspicion is that the spin-lock is perhaps contributing to the problem, > but have not been able to get to the bottom.
It sounds like a tripe fault. I suspect you are recursing on your stack somehow leading to a double fault that faults again trying to get a lock to output to the console perhaps (that would explain the lack of double fault messages if that were the case). Perhaps a lock used in the profiling is incorrectly being profiled? -- John Baldwin _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-smp To unsubscribe, send any mail to "[email protected]"
