![]() Or we might at least provide an Intel CPUID feature. Cross-platform availability: Linux, Windows, macOS. To a single number and we’d have to yield a list of possible ones instead of cpuinfo is a library to detect essential for performance optimization information about host CPU. Perusing Intel specs pages) it looks like sometimes we couldn’t narrow it down Would be nice if we could get the Intel sSpec number, but we’d have to keep and update a large table, and (from This is intentional, since the interface is more likely to Here, it's 0 for all processors, so you only have one chip. Type model name : Intel (R) Xeon (R) CPU X5650 2. ![]() The physical id gives you the chip (I guess). Processors 0 and 1 are on core 0 whereas processors 2 and 3 are on core 1 (look at the line core id ). grep core id /proc/cpuinfo core id : 16 core id : 0 core id : 17 core id : 1 core id : 25 core id : 9 core id : 26 core id : 10 Displays the number of sibling CPUs on the same physical CPU for architectures which use hyper-threading. The code for counting physical processors, cores, and hyperthreading is Both documentation and cpuinfo tell you that you have two cpu cores. But use this command it shows there are only 8 cores totally. Need testing with a broader range of "/proc/cpuinfo", for different kinds of processors.Ĭould use info about operating systems that do not provide "/proc/cpuinfo", but provide some other practical means to get CPU information. ![]() The central processing unit (CPU) is the portion of a computer system that carries out the instructions of a computer program, and is the primary element carrying out the computer's functions. Returns a symbol for the kind of Linux KVM virtualization supportĪt least one processor in cpuinfo has, or #f if none could be determined. It is two processor cores on one die essentially like having a dual processor system in one processor. "fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx constant_tsc arch_perfmon bts aperfmperf pni monitor vmx est tm2 xtpr pdcm" ) Architecture: x8664 CPU op-mode (s): 32-bit, 64-bit Byte Order: Little Endian CPU (s): 15 On-line CPU (s) list: 0-14 Thread (s) per core: 1 Core (s) per socket: 15 Socket (s): 1 NUMA node (s): 1 Vendor ID: GenuineIntel CPU family: 6 Model: 85 Model name: Intel (R) Core (TM) i9-9980XE CPU 3.00GHz Stepping: 4 CPU MHz: 1200. This might be do to how cpuinfo shows this for AMD or that specific family model. "Intel(R) Core(TM) Duo CPU T2500 2.00GHz" ) cpu cores : 8 Since in your case it is showing all 8 cores, it means the CPU is detected correctly although the amount of siblings are not all shown. Model name : Intel(R) Core(TM) i3 CPU M 380 2.( model-name. Model name : Intel(R) Core(TM) i3 CPU M 380 2.53GHzįlags : 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 pbe nx rdtscp lm constant_tsc arch_perfmon pebs bts xtopology nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 popcnt lahf_lm tpr_shadow vnmi flexpriority ept vpid dtherm aratĪddress sizes : 36 bits physical, 48 bits virtual The full contents of /proc/cpuinfo are as follows: processor : 0 Why they are not numbered like the CPUs and how to distinguish the same core IDs? I have 4 CPUs: $ cat /proc/cpu* | grep proc*īut if I use cat /proc/cpu* | grep 'core id' I get the same twice core id: 0 CpuInfo - file /proc/cpuinfo cpus - the processor line (e.g.
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