Date: Mon, 14 Jun 2004 12:24:22 -0700 From: Alfred Perlstein <alfred@freebsd.org> To: John Baldwin <jhb@FreeBSD.org> Cc: "David E. O'Brien" <obrien@FreeBSD.org> Subject: Re: cvs commit: src/sys/amd64/conf GENERIC Message-ID: <20040614192422.GH61448@elvis.mu.org> In-Reply-To: <200406141458.02468.jhb@FreeBSD.org> References: <Pine.NEB.3.96L.1040614141907.34947B-100000@fledge.watson.org> <200406141458.02468.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
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