Intel's Hyper-Threading

[Eric R.]

Eric R. wrote:
> Hi everyone,
> 
> Does anyone know if RedHat 7.1 includes the necessary system ingredients 
> for HT Technology and has HT Technology enabled?
> 
> Anyone know how I would find out?
> 
> Thanks for your time,
> Eric
> 
> 
> 
> 

For Red Hat Linux 7.1 and 7.2, administrators should first upgrade the 
kernel to the latest errata package.1 They can then enable 
Hyper-Threading by passing the acpismp=force flag through the boot 
loader. To determine whether Hyper-Threading is enabled under Linux, 
check /proc/cpuinfo; it should show twice the number of physical CPUs in 
the server.

cat /proc/cpuinfo

processor	: 0
vendor_id	: GenuineIntel
cpu family	: 15
model		: 2
model name	: Intel(R) XEON(TM) CPU 1.80GHz
stepping	: 4
cpu MHz		: 1796.986
cache size	: 512 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 tm
bogomips	: 3578.26

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 15
model		: 2
model name	: Intel(R) XEON(TM) CPU 1.80GHz
stepping	: 4
cpu MHz		: 1796.986
cache size	: 512 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 tm
bogomips	: 3591.37

processor	: 2
vendor_id	: GenuineIntel
cpu family	: 15
model		: 2
model name	: Intel(R) XEON(TM) CPU 1.80GHz
stepping	: 4
cpu MHz		: 1796.986
cache size	: 512 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 tm
bogomips	: 3591.37

processor	: 3
vendor_id	: GenuineIntel
cpu family	: 15
model		: 2
model name	: Intel(R) XEON(TM) CPU 1.80GHz
stepping	: 4
cpu MHz		: 1796.986
cache size	: 512 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 tm
bogomips	: 3591.37

Nevermind...

Sorry to bother everyone,

Eric