Linux查看cpu负载值是否正常

负载值是否正常"/>

Linux查看cpu负载值是否正常

查看cpu信息

cat /proc/cpuinfo

• 直接返回CPU的核心总数的命令
  grep -c ‘model name’ /proc/cpuinfo 返回总核数

root@zhaoqhu:~# grep -c 'model name' /proc/cpuinfo
32 

• cpu核数列表
  cat /proc/cpuinfo | grep “model name”

root@zhaoqhu:~# cat /proc/cpuinfo | grep "model name"
model name	: Intel(R)****4216 CPU @ 2.10GHz
model name	: Intel(R)****4216 CPU @ 2.10GHz
model name	: Intel(R)****4216 CPU @ 2.10GHz
model name	: Intel(R)****4216 CPU @ 2.10GHz
model name	: Intel(R)****4216 CPU @ 2.10GHz
model name	: Intel(R)****4216 CPU @ 2.10GHz
model name	: Intel(R)****4216 CPU @ 2.10GHz
model name	: Intel(R)****4216 CPU @ 2.10GHz
model name	: Intel(R)****4216 CPU @ 2.10GHz
model name	: Intel(R)****4216 CPU @ 2.10GHz
model name	: Intel(R)****4216 CPU @ 2.10GHz
model name	: Intel(R)****4216 CPU @ 2.10GHz
model name	: Intel(R)****4216 CPU @ 2.10GHz
model name	: Intel(R)****4216 CPU @ 2.10GHz
model name	: Intel(R)****4216 CPU @ 2.10GHz
model name	: Intel(R)****4216 CPU @ 2.10GHz
model name	: Intel(R)****4216 CPU @ 2.10GHz
model name	: Intel(R)****4216 CPU @ 2.10GHz
model name	: Intel(R)****4216 CPU @ 2.10GHz
model name	: Intel(R)****4216 CPU @ 2.10GHz
model name	: Intel(R)****4216 CPU @ 2.10GHz
model name	: Intel(R)****4216 CPU @ 2.10GHz
model name	: Intel(R)****4216 CPU @ 2.10GHz
model name	: Intel(R)****4216 CPU @ 2.10GHz
model name	: Intel(R)****4216 CPU @ 2.10GHz
model name	: Intel(R)****4216 CPU @ 2.10GHz
model name	: Intel(R)****4216 CPU @ 2.10GHz
model name	: Intel(R)****4216 CPU @ 2.10GHz
model name	: Intel(R)****4216 CPU @ 2.10GHz
model name	: Intel(R)****4216 CPU @ 2.10GHz
model name	: Intel(R)****4216 CPU @ 2.10GHz
model name	: Intel(R)****4216 CPU @ 2.10GHz

• 查看cpu总核数
  cat /proc/cpuinfo | grep “model name” -c

root@zhaoqhu:~# grep -c 'model name' /proc/cpuinfo
32

查看cpu负载

• 方式一，使用top
  linux可以通过top命令查看cpu负载信息，这个信息的后半部分会显示load average.它的意思是系统的平均载荷。数字越小，则载荷越小。三个数字分别表示最近1分钟，5分钟，15分钟内系统的平均负荷。

root@zhaoqhu:~# toptop - 15:24:28 up 40 days, 22:16,  4 users,  load average: 4.35, 4.43, 4.24

• 方式二， cat /proc/loadavg

root@zhaoqhu:~# cat /proc/loadavg
4.65 4.50 4.21 3/18631 28787

判断cpu负载是否正常

cpu负载的值不大于cpu数量
例如服务器是32核，CPU负载值load average不超过32就是正常值。