Date: Tue, 19 Mar 2002 11:03:56 +1030 From: Greg 'groggy' Lehey <grog@FreeBSD.org> To: Kenneth Culver <culverk@alpha.yumyumyum.org> Cc: Tony Vickers <tony@imnetworks.com>, freebsd-questions@FreeBSD.ORG Subject: Re: SMP Message-ID: <20020319110356.C91646@wantadilla.lemis.com> In-Reply-To: <20020318161110.S53554-100000@alpha.yumyumyum.org> References: <web-1561668@imnetworks.com> <20020318161110.S53554-100000@alpha.yumyumyum.org>
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On Monday, 18 March 2002 at 16:13:15 -0500, Kenneth Culver wrote: >> Can FreeBSD support more than one CPU? All the docs that I have found >> touch on the subject, but never really answer the question. I plan on >> moving from linux to FreeBSD on our database systems, however this >> question could make or break the out come. Thanks. > > Yes FreeBSD supports SMP, but it won't make much of a difference on a > FreeBSD 4.x machine for databases. Databases tend to have a lot of > processes trying to access the disk at once. This requires kernel service > and right now in 4.x FreeBSD can only have one processor running the > kernel at once. FreeBSD 5.0 (planned for release in November) will correct > this, and most likely be as fast as (if not faster than) anything out > there. We don't expect the initial release of 5.0 to bring significant performance improvements, though in the particular case of databases it might be a little faster than 4.x. It certainly won't perform as well as some commercial UNIX products, though. Greg -- When replying to this message, please copy the original recipients. If you don't, I may ignore the reply. For more information, see http://www.lemis.com/questions.html See complete headers for address and phone numbers To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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