Load Average
的定义见: load average
并不是表示CPU的繁忙程度,而是度量系统整体负载。这个数值是是运行队列(状态R)和等待磁盘I/O(状态D)的任务数的分钟级平均值。
ps -o comm,pid,ppid,user,time,etime,start,pcpu,state --sort=comm aH | grep '^COMMAND\|R$'
F UID PID PPID PRI NI VSZ RSS WCHAN STAT TTY TIME COMMAND
1 0 2 0 20 0 0 0 kthrea S ? 0:00 [kthreadd]
1 0 3 2 -100 - 0 0 migrat S ? 0:02 [migration/0]
1 0 4 2 20 0 0 0 ksofti S ? 0:48 [ksoftirqd/0]
1 0 5 2 -100 - 0 0 cpu_st S ? 0:00 [migration/0]
...
cat /proc/sched_debug | grep -A1 cpu# | sed -n '/cpu/{N;s/\n/,/;p}' | sed -r 's/ +/ /g' | sort -k6,6nr |head -5 && cat /proc/loadavg