Re: HT not active

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Jan Engelhardt wrote:
I cannot get HT to be used on some machine:

w04a# cat /proc/cpuinfo processor : 0
vendor_id       : GenuineIntel
cpu family      : 15
model           : 0
model name      : Intel(R) Pentium(R) 4 CPU 1700MHz
stepping        : 10
cpu MHz         : 1694.890
cache size      : 256 KB
fdiv_bug        : no
hlt_bug         : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 2
wp              : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm up
bogomips        : 3393.46

'ht' indicates:
#define X86_FEATURE_HT (0*32+28) /* Hyper-Threading */

Most P4s that I have seen have the HT flag but only some of them actually support it (and have it enabled in the BIOS). I don't think any 1.7GHz models did.

--
Robert Hancock      Saskatoon, SK, Canada
To email, remove "nospam" from [email protected]
Home Page: http://www.roberthancock.com/

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