From owner-freebsd-questions@FreeBSD.ORG  Sat May 18 17:13:22 2013
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
Delivered-To: freebsd-questions@freebsd.org
Received: from mx1.freebsd.org (mx1.FreeBSD.org [8.8.178.115])
 by hub.freebsd.org (Postfix) with ESMTP id 00F2BBEA
 for <freebsd-questions@freebsd.org>; Sat, 18 May 2013 17:13:21 +0000 (UTC)
 (envelope-from freebsd@pki2.com)
Received: from btw.pki2.com (btw.pki2.com [IPv6:2001:470:a:6fd::2])
 by mx1.freebsd.org (Postfix) with ESMTP id BF282A10
 for <freebsd-questions@freebsd.org>; Sat, 18 May 2013 17:13:21 +0000 (UTC)
Received: from [127.0.0.1] (localhost [127.0.0.1])
 by btw.pki2.com (8.14.6/8.14.5) with ESMTP id r4IHD8UG037681
 for <freebsd-questions@freebsd.org>; Sat, 18 May 2013 10:13:08 -0700 (PDT)
 (envelope-from freebsd@pki2.com)
Subject: More than 32 CPUs under 8.4-P
From: Dennis Glatting <freebsd@pki2.com>
To: freebsd-questions@freebsd.org
Content-Type: text/plain; charset="ISO-8859-1"
Date: Sat, 18 May 2013 10:13:08 -0700
Message-ID: <1368897188.16472.19.camel@btw.pki2.com>
Mime-Version: 1.0
X-Mailer: Evolution 2.32.1 FreeBSD GNOME Team Port 
Content-Transfer-Encoding: 7bit
X-yoursite-MailScanner-Information: Dennis Glatting
X-yoursite-MailScanner-ID: r4IHD8UG037681
X-yoursite-MailScanner: Found to be clean
X-MailScanner-From: freebsd@pki2.com
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.14
Precedence: list
List-Id: User questions <freebsd-questions.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-questions>, 
 <mailto:freebsd-questions-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-questions>
List-Post: <mailto:freebsd-questions@freebsd.org>
List-Help: <mailto:freebsd-questions-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
 <mailto:freebsd-questions-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sat, 18 May 2013 17:13:22 -0000


I have a 4x16=64 core server running FreeBSD 8.4-P but only two of the
CPUs (2x16=32) are enabled. Enabling the other 32 isn't as simple as
changing MAXCPU in param.h (apparently) and recompiling.

What do I need to do to enable the other 32 cores?


Copyright (c) 1992-2013 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 8.4-PRERELEASE #0 r250401: Wed May  8 21:46:23 PDT 2013
    root@mc:/disk-2/obj/disk-1/src/sys/GENERIC amd64
gcc version 4.2.1 20070831 patched [FreeBSD]
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: AMD Opteron(TM) Processor 6274                  (2200.04-MHz
K8-class CPU)
  Origin = "AuthenticAMD"  Id = 0x600f12  Family = 15  Model = 1
Stepping = 2

Features=0x178bfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,MMX,FXSR,SSE,SSE2,HTT>

Features2=0x1e98220b<SSE3,PCLMULQDQ,MON,SSSE3,CX16,SSE4.1,SSE4.2,POPCNT,AESNI,XSAVE,OSXSAVE,AVX>
  AMD Features=0x2e500800<SYSCALL,NX,MMX+,FFXSR,Page1GB,RDTSCP,LM>
  AMD
Features2=0x1c9bfff<LAHF,CMP,SVM,ExtAPIC,CR8,ABM,SSE4A,MAS,Prefetch,OSVW,IBS,XOP,SKINIT,WDT,LWP,FMA4,NodeId,Topology,<b23>,<b24>>
  TSC: P-state invariant
real memory  = 137438953472 (131072 MB)
avail memory = 132427862016 (126293 MB)
ACPI APIC Table: <120911 APIC1027>
FreeBSD/SMP: Multiprocessor System Detected: 32 CPUs
FreeBSD/SMP: 2 package(s) x 16 core(s)