Question on kernel compiling and hyper threading

Leslie Jensen leslie at eskk.nu
Sat Mar 22 02:29:43 PDT 2008


I'n on a system with the CPU specs you see below.

I'm planning to update the system to 7.0 and want to ask about the 
enabeling or disablening of hyper threading in BIOS.

What I've seen on my current system is that when I enable hyper 
threading my cpu-graph only shows up to 50% in gkrelm and xfce's cpu graph.

Should I compile the kernel with special parameters or is it just the 
inability of gkrelm and xfce's cpu graph to detect hyper threading I'm 
seeing?

-------------------------
WARNING: MPSAFE network stack disabled, expect reduced performance.
acpi_alloc_wakeup_handler: can't alloc wake memory
ACPI APIC Table: <A M I  OEMAPIC >
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: Intel(R) Pentium(R) 4 CPU 3.40GHz (3412.10-MHz 686-class CPU)
   Origin = "GenuineIntel"  Id = 0xf34  Stepping = 4

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=0x441d<SSE3,RSVD2,MON,DS_CPL,CNTX-ID,<b14>>
   Logical CPUs per core: 2
real memory  = 1073414144 (1023 MB)
avail memory = 1028616192 (980 MB)
FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs
  cpu0 (BSP): APIC ID:  0
  cpu1 (AP): APIC ID:  1
ioapic0 <Version 2.0> irqs 0-23 on motherboard
--------------------------------

Thanks
/Leslie



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