你好专家！
能否请你帮忙。我想计算过去5分钟的CPU负载。我需要永久地获得这些价值。
我找到了非常有用和详细的文章：http://phoxis.org/2013/09/05/finding-overall-and-per-core-cpu-utilization/
但是我不确定检索这些数字的最佳方法是：每隔一段时间运行脚本，并且每300次迭代计算一次超量数（例如）？
提前谢谢！
答案 0 :(得分：1)
如果您编写自己的代码来监控使用情况，那么您的计算等效于海森堡的不确定性原则。或者，您可以使用“uptime”命令。
% uptime
16:00:29 up 3 days, 18:31, 2 users, load average: 0.04, 0.12, 0.09
最后三个数字是过去1,5和15分钟内的系统负载平均值。从手册页：
System load averages is the average number of processes that are
either in a runnable or uninterruptable state. A process in a
runnable state is either using the CPU or waiting to use the
CPU. A process in uninterruptable state is waiting for some I/O
access, eg waiting for disk. The averages are taken over the
three time intervals. Load averages are not normalized for the
number of CPUs in a system, so a load average of 1 means a sin-
gle CPU system is loaded all the time while on a 4 CPU system it
means it was idle 75% of the time.
只要您知道系统中有多少CPU，就可以满足您的需求。
第二次迭代：
# cat /proc/uptime
353615.60 344666.42
从/ proc手册页：
/proc/uptime
This file contains two numbers: the uptime of the sys-
tem (seconds), and the amount of time spent in idle
process (seconds).
您可以每五分钟轮询一次并记录值的变化。