Date: Sun, 14 Sep 1997 04:24:08 +0000 (GMT) From: Terry Lambert <tlambert@primenet.com> To: missmanp@milo.cfw.com (Paul Missman) Cc: freebsd-smp@freebsd.org Subject: Re: SMP in FreeBSD 3.x.x Message-ID: <199709140424.VAA07740@usr08.primenet.com> In-Reply-To: <199709140052.RAA09731@hub.freebsd.org> from "Paul Missman" at Sep 13, 97 08:56:29 pm
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> I see that the SMP source was merged with the 3.x.x development kernal. > Does this mean that 3.x.x, when released, will seamlessly support 1 - N > processors? Also, what do you imagine maximum N will be at 3.x.x release > time? I believe the original Intel spec was up to 4 processors, but I see a > lot of 8 processor servers coming out lately. A system can have up to 32 APICs. It is the APIC IDs that limit the number of processors. Given that a system will have an I/O APIC, the max is 31 (except for I2O systems, where the i960 also has an APIC, or systems with multiple bus controllers -- each with an APIC). So ~30. Terry Lambert terry@lambert.org --- Any opinions in this posting are my own and not those of my present or previous employers.
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