linux get cpu load

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Linux CPU utilization and CPU load (additional code implementation) __linux

first section CPU utilization and CPU load Under Linux/unix, CPU utilization (CPU utilization) is divided into user state, System State and idle state, respectively, the CPU is in user state execution time, system kernel execution time, and idle

CPU of Linux system and performance monitoring

CPU of Linux system and performance monitoringPerformance optimization is the process of finding bottlenecks in system processing and removing them. This article was translated by sanotes.net webmaster Tonnyom in August 2009 from the Linux System

Meaning of cpu usage in linux top Command, linuxtop

Meaning of cpu usage in linux top Command, linuxtop Meaning of cpu usage in linux top Command[Respect for original articles from: http://www.iteye.com/topic/1110848]CPU usage of 0.3% us user space1.0% sy CPU usage in kernel space0.0% percentage of

Linux performance monitoring and tuning (CPU)

In fact, there are many articles on this part on the Internet. Why is this article still available? There are several reasons why it is the motivation of my translation. First, although concepts and content are old-fashioned, but they are all very

About the CPU's running queue and system load

In the Linux operating system, we generally look at the CPU load of the system commonly used commands can be uptime,top, as well as vmstat and so on are all possible. The information provided by each tool is different,I'm going to talk about the CPU

Linux kernel sync-per-cpu variables

First, Source: Why the introduction of PER-CPU variables?1. Performance issues with Lock busPrior to ARMV6 on the arm platform, the SWP and SWPB directives were used to support access to the shared memory: SWP , , [] In Rn, the memory

Linux kernel synchronization mechanism (ii): PER-CPU variable

Transferred from: http://www.wowotech.net/linux_kenrel/per-cpu.htmlFirst, Source: Why the introduction of PER-CPU variables?1. Performance issues with Lock busPrior to ARMV6 on the arm platform, the SWP and SWPB directives were used to support

(reprint) Linux kernel SMP load Balancing analysis

DemandIn the article "Analysis of Linux process scheduling", it is mentioned that in SMP (symmetric multiprocessor) environment, each CPU corresponds to a run_queue (executable queue). If a process is in the task_running state (executable state), it

Linux Kernel SMP Load Balancing

From: http://hi.baidu.com/_kouu/item/479891211a84e3c9a5275ad9 In an SMP (symmetric multi-processor) Environment, each CPU corresponds to a run_queue (executable Queue ). If a process is in the task_running state (executable State), it will be added

Linux system CPU Usage (load average) grooming

In peacetime operations, when a server has a performance problem, it usually looks at the current CPU usage, especially the load of the CPU (load average).To get the CPU load of the server, there are three kinds of commands:1) w command [[email

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