Les infos sont dans /proc/cpuinfo
grep « processor\|cpu cores » /proc/cpuinfo
processor : 0
cpu cores : 4
processor : 1
cpu cores : 4
processor : 2
cpu cores : 4
processor : 3
cpu cores : 4
4 processeurs avec chacun 4 coeurs.
cat /proc/cpuinfo
processor : 15
vendor_id : GenuineIntel
cpu family : 6
model : 26
model name : Intel(R) Xeon(R) CPU X5560 @ 2.80GHz
stepping : 5
cpu MHz : 2800.246
cache size : 8192 KB
physical id : 1
siblings : 8
core id : 11
cpu cores : 4
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 rdtscp lm pni monitor ds_cpl est tm2 cx16 xtpr popcnt lahf_lm
bogomips : 5600.29
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management:
Les processeurs sont numérotés à partir de 0. Ici nous avons le détail du processeur N° 15 donc le 16ième.
How many physical processors are there?
$ grep ‘physical id’ /proc/cpuinfo | sort | uniq | wc -l
2
How many virtual processors are there?
$ grep ^processor /proc/cpuinfo | wc -l
4
Are the processors dual-core (or multi-core)?
$ grep ‘cpu cores’ /proc/cpuinfo
cpu cores : 2
cpu cores : 2
cpu cores : 2
cpu cores : 2
« 2 » indicates the two physical processors are dual-core, resulting in 4 virtual processors.
If « 1 » was returned, the two physical processors are single-core. If the processors are single-core, and the number of virtual processors is greater than the number of physical processors, the CPUs are using hyper-threading. Hyper-threading is supported if ht is present in the CPU flags and you are using an SMP kernel.