Hi,
I'm running FreeBSD 6.0 Release (amd64) on Dell Poweredge 2850s. So far,
so good. I'm doing a pretty vanilla install of things, enabling SMP in the
kernel, and that's pretty much it. This server has 2 EM64T CPUs in it.
When looking at top, CPU 1 rarely shows up with processes on it. systat
does show it idle most of the time. Why is this? Why do processes land on
CPU 0, 2, and 3 in most cases.
Also, by setting machdep.hyperthreading_allowed=1, CPU 1 starts taking
process onto it.
Output from dmesg:
CPU: Intel(R) Xeon(TM) CPU 3.00GHz (2992.71-MHz K8-class CPU)
Origin = "GenuineIntel" Id = 0xf43 Stepping = 3
Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,C
MOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>
Features2=0x641d<SSE3,RSVD2,MON,DS_CPL,CNTX-ID,CX16,<b14>>
AMD Features=0x20100800<SYSCALL,NX,LM>
Hyperthreading: 2 logical CPUs
real memory = 5368709120 (5120 MB)
avail memory = 4118777856 (3927 MB)
ACPI APIC Table: <DELL PE BKC >
FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs
cpu0 (BSP): APIC ID: 0
cpu1 (AP): APIC ID: 1
cpu2 (AP): APIC ID: 6
cpu3 (AP): APIC ID: 7
Can someone clarify this for me?
Thanks,
Tom
--
Thomas J. Daly
[EMAIL PROTECTED]
Dynamic Network Services, Inc.
http://www.dyndns.com/
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