It currently supports DMI (x86 and IA-64 only), OpenFirmware device tree (PowerPC only), PCI/AGP, CPUID (x86), IDE/ATA/ATAPI, PCMCIA (only tested on x86), SCSI and USB. on DMI-capable x86 or IA-64 systems and on some PowerPC machines (PowerMac G4 is known to work). It can report exact memory configuration, firmware version, mainboard configuration, CPU version and speed, cache configuration, bus speed, etc. lshw is a small tool to extract detailed information on the hardware configuration of the machine. Know more about inxi command – Click Here inxi shows system hardware, CPU, drivers, Xorg, Desktop, Kernel, GCC version(s), Processes, RAM usage, and a wide variety of other useful information. It is also used for forum technical support, as a debugging tool, to quickly ascertain user system configuration and hardware. inxi is a command line system information script built for for console and IRC. The primary purpose of inxi is for support, and sys admin use. It is available in most Linux distribution repositories, and also runs somewhat on BSDs.
#CPUINFO UBUNTU FULL#
Inxi is a full featured CLI system information tool. The cpuinfo shows a detail information about the CPU. Most of it is read-only, but some files allow kernel variables to be changed. To make it simple, you can use short option by typing the following command. However, this tool has a long display and little bit untidy. The proc filesystem is a pseudo-filesystem which provides an interface to kernel data structures. The utility will bring you more info including cpu, memory, disk, usb controllers, network adapters etc. Proc is the process information pseudo-filesystem. There is also information about the CPU caches and cache sharing, family, model, bogoMIPS, byte order, and stepping. Open the file /proc/cpuinfo using a text editor of your choice. If commands like lscpu, dmidecode can show you the amount of CPUs, Cores and threads/siblings for each, then the issue is with how cpuinfo handles the information.The information includes, for example, the number of CPUs, threads, cores, sockets, and Non-Uniform Memory Access (NUMA) nodes. In Linux, CPU information is stored in a system file, which can be either read using a text editor, or it can be read and used in an administrative shell script. This might be do to how cpuinfo shows this for AMD or that specific family model. 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. Version: Intel(R) Core(TM) i7-2600 CPU 3.40GHzĪlso in a benchmark in OpenBenchmark I found your model and there is one line that shows the following when doing cat on /proc/cpuinfo: cpu cores : 8 In my case dmidecode says: sudo dmidecode -t processor | grep -e Core -e Thread Sudo dmidecode -t processor | grep -e Core -e Thread and add the information to your question. It would also help to find out why if you could execute the following: In your case it is suppose to show 8 cores (In my case it is 4 cores) so it will show a long list but since it is repeating itself after the 4th core, it looks like is either not reading the other cores (BIOS issue, Kernel issue) or the cpuinfo is not detecting it correctly. If you have more sockets in your motherboard, the amount of physical IDs will go up along with the amount of cores. So in the end it shows for that one physical id, 4 core ids and 4 HT. There are actually 4 cores and 4 HT ones. Next we have the core ids that reference that physical id. Think of it as for each socket in the motherboard there is one physical id. Since I have an Intel motherboard that only has one socket, this means I only have one physical id.
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Here is an Intel i7 2600 to compare with: cat /proc/cpuinfo | grep -e ^core -e ^phys Power management: ts ttp tm stc 100mhzsteps hwpstate You can easily read its content and display it. Model name : AMD Opteron(tm) Processor 6128įlags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc rep_good nonstop_tsc extd_apicid amd_dcm pni monitor cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt nodeid_msr npt lbrv svm_lock nrip_save pausefilterĪddress sizes : 48 bits physical, 48 bits virtual The /proc/cpuinfo is a read-only file that contains information about the central processing units on a machine. Full entry for the 8th "processor": processor : 7
So one should interpret this /proc/cpuinfo entry as a 4-core CPU with hyperthreading. My understanding so far has been that different cores within the same physical CPU would have different core id, and if core ids are identical, this is due to hyperthreading. An Opteron 6128 shows up as follows in /proc/cpuinfo: $ cat /proc/cpuinfo | grep -e ^core -e ^phys
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