Dual core CPUs support

German Tischler tanis at gaspode.franken.de
Wed Dec 21 12:23:37 PST 2005


Tomas Randa wrote:
> Hello all friends of FreeBSD unix,
> I´d like to ask here, what is the actual situation with dual core CPUs -
> Athlon 64 X2 etc. and their functionality with FreeBSD 5.X / 6.X / 7.0
> current.
> Few days ago, I bought X2 processor, but unexpectedly FreeBSD found only
> one CPU.
> I started to search google, but no exact informations is available.
> So I am trying this way, is anybody here who could say me status of Dual
> Core CPUs in FreeBSD and when (IF) they would be supported?
> I tried 5.4/i386 with options  SMP, 6.0/i386 with the same config, in
> both cases system found only one CPU, but on 5.4 system wrote HTT 2
> logical units.

my dmesg output contains


FreeBSD 6.0-STABLE #4: Sun Nov 20 19:54:13 CET 2005
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: AMD Athlon(tm) 64 X2 Dual Core Processor 4200+ (2211.34-MHz
K8-class CPU)
  Origin = "AuthenticAMD"  Id = 0x20fb1  Stepping = 1

  AMD Features=0xe2500800<SYSCALL,NX,MMX+,<b25>,LM,3DNow+,3DNow>
real memory  = 1073676288 (1023 MB)
avail memory = 1026330624 (978 MB)
FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs
 cpu0 (BSP): APIC ID:  0
 cpu1 (AP): APIC ID:  1


so it looks like FreeBSD 6 stable (and above) supports them.

Btw: why are you trying to use FreeBSD i386 for an AMD64 cpu ?

Best regards
German Tischler

More information about the freebsd-current mailing list