PLEASE TEST: IPI deadlock avoidance patch

[Claus Guttesen]

>> please try this patch:
>> 
>>
>> http://people.freebsd.org/~dwhite/smp_rv_mtx.patch
> 
> OK, it seems I shouted out too early.  '-jX'
> of uptime.  It's a Dual Xeon with HTT, SCHED_4BSD,
> ADAPTIVE_GIANT, and no WITNESS or INVARIANTS.

Have you tried disabling HTT? Do you gain better
performance when HTT is enabled?

Claus


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