More than 32 CPUs under 8.4-P

[Ivan Klymenko]

В Sat, 18 May 2013 10:13:08 -0700
Dennis Glatting <freebsd at pki2.com> пишет:

> 
> 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 at 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)
> 

http://svnweb.freebsd.org/base/releng/8.4/sys/amd64/include/param.h?revision=248810&view=markup

Set MAXCPU parameter to 64