From owner-freebsd-questions@FreeBSD.ORG Fri Jun 27 20:08:25 2008 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 924931065677 for ; Fri, 27 Jun 2008 20:08:25 +0000 (UTC) (envelope-from gpeel@thenetnow.com) Received: from thenetnow.com (thenetnow.com [69.90.69.141]) by mx1.freebsd.org (Postfix) with ESMTP id 752038FC13 for ; Fri, 27 Jun 2008 20:08:25 +0000 (UTC) (envelope-from gpeel@thenetnow.com) Received: from hpeel.ody.ca ([216.240.12.2] helo=GRANT) by constellation.thenetnow.com with esmtpa (Exim 4.63 (FreeBSD)) (envelope-from ) id 1KCKF6-00080j-FZ for freebsd-questions@freebsd.org; Fri, 27 Jun 2008 16:08:24 -0400 Message-ID: <75CC1A2D26F54D419329D06D438A9803@GRANT> From: "Grant Peel" To: References: <39A6C9275DDA4B6DA24DF4B7E51189B0@GRANT><20080627220702.31b4cf73.ghirai@ghirai.com><32548573DF524D82AD27368B846BB8E9@GRANT> <44iqvuprwb.fsf@be-well.ilk.org> Date: Fri, 27 Jun 2008 16:08:23 -0400 Organization: The Net Now MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5512 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5512 Subject: Re: CPUs again. X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: Grant Peel List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 27 Jun 2008 20:08:25 -0000 So, Given the output below, is there any real benifit to compiling a custom kernel with an amd64 machine type (performance gains?), and given that this server will be a Web/Email/Mysql server? /var/run/dmesg.boot Copyright (c) 1992-2008 The FreeBSD Project. Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994 The Regents of the University of California. All rights reserved. FreeBSD is a registered trademark of The FreeBSD Foundation. FreeBSD 6.3-RELEASE #0: Wed Jan 16 04:45:45 UTC 2008 root@dessler.cse.buffalo.edu:/usr/obj/usr/src/sys/SMP Timecounter "i8254" frequency 1193182 Hz quality 0 CPU: Intel(R) Xeon(R) CPU 3065 @ 2.33GHz (2335.84-MHz 686-class CPU) Origin = "GenuineIntel" Id = 0x6fb Stepping = 11 Features=0xbfebfbff Features2=0xe3fd AMD Features=0x20100000 AMD Features2=0x1 Cores per package: 2 real memory = 3219857408 (3070 MB) avail memory = 3145625600 (2999 MB) ACPI APIC Table: FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs cpu0 (BSP): APIC ID: 0 cpu1 (AP): APIC ID: 1 ioapic0: Changing APIC ID to 2 ioapic1: Changing APIC ID to 3 ioapic0 irqs 0-23 on motherboard ioapic1 irqs 32-55 on motherboard Thx, -Grant ----- Original Message ----- From: "Lowell Gilbert" To: "Grant Peel" Cc: Sent: Friday, June 27, 2008 4:03 PM Subject: Re: CPUs again. > "Grant Peel" writes: > >> Understood, >> >> Does the default "GENERIC" kernel see them as i386 or amd64 when >> booting then?, or does using amd64 require a custom kernel? > > The kernel and the rest of the system are compiled for i386 or amd64. > You can run amd64 software on amd64 architecture hardware, and you can > run i386 software on i386 or amd64 hardware. > > -- > Lowell Gilbert, embedded/networking software engineer, Boston area > http://be-well.ilk.org/~lowell/ > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to > "freebsd-questions-unsubscribe@freebsd.org" > >