Date: Fri, 27 Jun 2008 16:08:23 -0400 From: "Grant Peel" <gpeel@thenetnow.com> To: <freebsd-questions@freebsd.org> Subject: Re: CPUs again. Message-ID: <75CC1A2D26F54D419329D06D438A9803@GRANT> References: <39A6C9275DDA4B6DA24DF4B7E51189B0@GRANT><20080627220702.31b4cf73.ghirai@ghirai.com><BAY126-W163E37BEB6C9468A16CEE1CAA20@phx.gbl><32548573DF524D82AD27368B846BB8E9@GRANT> <44iqvuprwb.fsf@be-well.ilk.org>
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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<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>
Features2=0xe3fd<SSE3,RSVD2,MON,DS_CPL,VMX,SMX,EST,TM2,SSSE3,CX16,xTPR,PDCM>
AMD Features=0x20100000<NX,LM>
AMD Features2=0x1<LAHF>
Cores per package: 2
real memory = 3219857408 (3070 MB)
avail memory = 3145625600 (2999 MB)
ACPI APIC Table: <DELL PE_SC3 >
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 <Version 2.0> irqs 0-23 on motherboard
ioapic1 <Version 2.0> irqs 32-55 on motherboard
Thx,
-Grant
----- Original Message -----
From: "Lowell Gilbert" <freebsd-questions-local@be-well.ilk.org>
To: "Grant Peel" <gpeel@thenetnow.com>
Cc: <freebsd-questions@freebsd.org>
Sent: Friday, June 27, 2008 4:03 PM
Subject: Re: CPUs again.
> "Grant Peel" <gpeel@thenetnow.com> 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/
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