trav1s
Full Member level 1
I just got a work computer with Intel Xeon Processor X5670. It has 6 cores which can run 12 processes through HyperThreading. However, after enabling HyperThreading in the BIOS, the OS now thinks there are 8 cores. That doesn't really make sense to me. Here, take a look for yourself.
Does anyone have any ideas how I can get my four remaining threads? A lot of people don't think HyperThreading is very useful, but I think the types of loads I am running would receive a significant boost since they are highly parallelized. Operating system is Linux CentOS version 4.8. Upgrading CentOS is not a possibility as version 5 creates conflict with software.
Code:
[user@machine ~]$ cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 44
model name : Intel(R) Xeon(R) CPU X5670 @ 2.93GHz
stepping : 2
cpu MHz : 1596.000
cache size : 12288 KB
physical id : 0
siblings : 1
core id : 255
cpu cores : 1
fpu : yes
fpu_exception : yes
cpuid level : 11
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 syscall nx pdpe1gb rdtscp lm pni monitor ds_cpl est tm2 cx16 xtpr popcnt lahf_lm
bogomips : 5856.16
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management:
processor : 1
vendor_id : GenuineIntel
cpu family : 6
model : 44
model name : Intel(R) Xeon(R) CPU X5670 @ 2.93GHz
stepping : 2
cpu MHz : 1596.000
cache size : 12288 KB
physical id : 2
siblings : 1
core id : 255
cpu cores : 1
fpu : yes
fpu_exception : yes
cpuid level : 11
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 syscall nx pdpe1gb rdtscp lm pni monitor ds_cpl est tm2 cx16 xtpr popcnt lahf_lm
bogomips : 5851.97
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management:
processor : 2
vendor_id : GenuineIntel
cpu family : 6
model : 44
model name : Intel(R) Xeon(R) CPU X5670 @ 2.93GHz
stepping : 2
cpu MHz : 1596.000
cache size : 12288 KB
physical id : 4
siblings : 1
core id : 255
cpu cores : 1
fpu : yes
fpu_exception : yes
cpuid level : 11
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 syscall nx pdpe1gb rdtscp lm pni monitor ds_cpl est tm2 cx16 xtpr popcnt lahf_lm
bogomips : 5851.97
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management:
processor : 3
vendor_id : GenuineIntel
cpu family : 6
model : 44
model name : Intel(R) Xeon(R) CPU X5670 @ 2.93GHz
stepping : 2
cpu MHz : 1596.000
cache size : 12288 KB
physical id : 16
siblings : 1
core id : 255
cpu cores : 1
fpu : yes
fpu_exception : yes
cpuid level : 11
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 syscall nx pdpe1gb rdtscp lm pni monitor ds_cpl est tm2 cx16 xtpr popcnt lahf_lm
bogomips : 5851.77
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management:
processor : 4
vendor_id : GenuineIntel
cpu family : 6
model : 44
model name : Intel(R) Xeon(R) CPU X5670 @ 2.93GHz
stepping : 2
cpu MHz : 1596.000
cache size : 12288 KB
physical id : 18
siblings : 1
core id : 255
cpu cores : 1
fpu : yes
fpu_exception : yes
cpuid level : 11
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 syscall nx pdpe1gb rdtscp lm pni monitor ds_cpl est tm2 cx16 xtpr popcnt lahf_lm
bogomips : 5851.96
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management:
processor : 5
vendor_id : GenuineIntel
cpu family : 6
model : 44
model name : Intel(R) Xeon(R) CPU X5670 @ 2.93GHz
stepping : 2
cpu MHz : 1596.000
cache size : 12288 KB
physical id : 20
siblings : 1
core id : 255
cpu cores : 1
fpu : yes
fpu_exception : yes
cpuid level : 11
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 syscall nx pdpe1gb rdtscp lm pni monitor ds_cpl est tm2 cx16 xtpr popcnt lahf_lm
bogomips : 5851.93
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management:
processor : 6
vendor_id : GenuineIntel
cpu family : 6
model : 44
model name : Intel(R) Xeon(R) CPU X5670 @ 2.93GHz
stepping : 2
cpu MHz : 1596.000
cache size : 12288 KB
physical id : 1
siblings : 1
core id : 255
cpu cores : 1
fpu : yes
fpu_exception : yes
cpuid level : 11
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 syscall nx pdpe1gb rdtscp lm pni monitor ds_cpl est tm2 cx16 xtpr popcnt lahf_lm
bogomips : 5852.05
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management:
processor : 7
vendor_id : GenuineIntel
cpu family : 6
model : 44
model name : Intel(R) Xeon(R) CPU X5670 @ 2.93GHz
stepping : 2
cpu MHz : 1596.000
cache size : 12288 KB
physical id : 3
siblings : 1
core id : 255
cpu cores : 1
fpu : yes
fpu_exception : yes
cpuid level : 11
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 syscall nx pdpe1gb rdtscp lm pni monitor ds_cpl est tm2 cx16 xtpr popcnt lahf_lm
bogomips : 5851.97
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management:Does anyone have any ideas how I can get my four remaining threads? A lot of people don't think HyperThreading is very useful, but I think the types of loads I am running would receive a significant boost since they are highly parallelized. Operating system is Linux CentOS version 4.8. Upgrading CentOS is not a possibility as version 5 creates conflict with software.
