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Date: Mon, 14 Jun 2004 12:24:22 -0700
From: Alfred Perlstein <alfred@freebsd.org>
To: John Baldwin <jhb@FreeBSD.org>
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* John Baldwin <jhb@FreeBSD.org> [040614 11:57] wrote:
> 
> I'm betting it is just triggering a race.  When I first did the adaptive 
> mutexes I stress tested it (-j <bignum> buildworld loops) on an ultra60, an 
> alpha ds20, and a quad pii-xeon w/o any lockups.

Just a side note, I think it's the Berkeley DB's recent code that
will spin a number of times based on the number of CPUs present in
the system.  Meaning, it might make sense to spin more on a quad
than on a dual proc machine.  It might be worth checking this out.

-- 
- Alfred Perlstein
- Research Engineering Development Inc.
- email: bright@mu.org cell: 408-480-4684