CPUs again.

[Grant Peel]

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 at 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 at be-well.ilk.org>
To: "Grant Peel" <gpeel at thenetnow.com>
Cc: <freebsd-questions at freebsd.org>
Sent: Friday, June 27, 2008 4:03 PM
Subject: Re: CPUs again.


> "Grant Peel" <gpeel at 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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