number of CPUs and IPI panic

[Gavin Atkinson]

On Wed, 20 Oct 2004, Nik Azim Azam wrote:

> hello list,
>
> i'm doing some testing on a 6 cpu pentium II overdrive
> computer with 6-CURRENT. with 6 cpus, the system will
> panic easily with moderate load (previous IPI is
> stuck). i edited sys/i386/sys/param.h file and lowered
> the MAXCPU to 4. now the system is running with 4 cpus
> and it survived a make buildworld + portupgrade at the
> same time.
>
> is this a known problem? i can give more information
> if anyone interested.

Are you using SCHED_ULE? (I believe it's the default in 6-CURRENT...)

If so, try with SCHED_4BSD. ULE has known problems at the moment.

Gavin