linux show cpu cores

[1] Physical CPU: The number of CPUs on the slot in the actual server. Number of physical CPUs: There are several physical IDs that can be counted without duplicates. [2] Logical CPU Linux users are certainly not unfamiliar with the/proc/cpuinfo

How to view the number of physical CPUs, cores, threads, and Linux on linux First, let's take a look at what is hyper-threading. Hyper-Threading Technology uses special hardware commands to simulate two logical kernels into two physical chips, so

The concept of number of CPUs , number of cores,number ofprocessor CPU number The independent central processing Unit, which is represented on the motherboard, is the number of CPU Slot Position cpu cores

First, look at what the Hyper-threading conceptHyper-Threading technology is the use of special hardware instructions, the two logical core simulation into two physical chips, so that a single processor can use thread-level parallel computing, and

0. Prepare knowledgeHyper-Threading Technology (hyper-threading): Using special hardware instructions, the two logical cores (CPU core) are simulated into two physical chips,Allows a single processor to use thread-level parallel computing, which is

In general, MySQL optimization can be divided into two levels: one is Optimization at the MySQL level, such as SQL rewriting, index addition, and configuration of various MySQL parameters; the other layer is the operating system and hardware.

In fact, as long as #include Long num = sysconf (_SC_NPROCESSORS_ONLN); You can get the current number of CPUs ... Judge the basis:1. CPUs with the same core ID are the same core hyper-threading.2. CPUs with the same physical ID are the same

In the analysis of the system, one of the first and most basic tools is often a simple measurement of the CPU utilization of the system. Linux and most unix-based operating systems provide a command to display the system's average load (loadaverage).

[Plain]View PlainCopy [Email protected]:~$ cat/proc/cpuinfo processor:0 Vendor_id:genuineintel CPU Family:15 Model:2 Model Name:intel (R) Pentium (r) 4 CPU 3.00GHz Stepping:9 microcode:0x17 CPU mhz:2992.615 Cache size:512 KB

Problem: I have a Linux process running on a multi-core processor system. How can I find out which CPU kernel is running the process? The affinity of Cpu/memory is one of the most important factors for maximizing performance when you run HPC