load averages 代表了系统的平均负载
对于单核CPU情况:
对于多核CPU
负载应该小于核心数
查看CPU信息
cat /proc/cpuinfo
lscpu
https://scoutapm.com/blog/understanding-load-averages
https://www.linuxjournal.com/article/9001
https://www.brendangregg.com/blog/2017-08-08/linux-load-averages.html