推广网站哪里好,oa管理系统软件,免费做房产网站有哪些,国内最近新闻过去从未仔细了解过使用 top 和 htop 等命令时显式的CPU信息#xff0c;本文我们详解解读和标注一下各个数据项的含义#xff0c;同时和 Ganglia 显式的数据做一个映射。开始前介绍一个小知识#xff0c;很多查看CPU的命令行工具都是 cat /proc/stat 里的数据#xff0c;所…过去从未仔细了解过使用 top 和 htop 等命令时显式的CPU信息本文我们详解解读和标注一下各个数据项的含义同时和 Ganglia 显式的数据做一个映射。开始前介绍一个小知识很多查看CPU的命令行工具都是 cat /proc/stat 里的数据所以数据来源都是一样的区别只在于显式格式用户体验上。本文我们以 mpstat 和 uptime 命令为主最后介绍一下 top 和 htop 的一些细微差异。
一般来说CPU 的性能会分成两个维度来看一个是利用率另一个是1/5/15分钟的平均负载这两种指标是不同的 具体内容年后补啦收工了今年肝稿 108 篇累死~ %user: Percentage of CPU utilization that occurred while executing at the user level (application). %nice: Percentage of CPU utilization that occurred while executing at the user level with nice priority. %system: Percentage of CPU utilization that occurred while executing at the system level (kernel). %iowait: Percentage of time that the CPU or CPUs were idle during which the system had an outstanding disk I/O request. %idle: Percentage of time that the CPU or CPUs were idle and the system did not have an outstanding disk I/O request.
%usr – % CPU usage at the user level %nice – % CPU usage for user processes labeled “nice” %sys – % CPU usage at the system (Linux kernel) level %iowait – % CPU usage idling waiting on a disk read/write %irq – % CPU usage handling hardware interrupts %soft – % CPU usage handing software interrupts %steal – % CPU usage being forced to wait for a hypervisor handling other virtual processors %guest – % CPU usage spent running a virtual processor %idle – % CPU usage on idle time (no processes, and not waiting on a disk read/write)
