php如何获取centos的cpu当前使用率
如题。
我用
$str = shell_exec('more /proc/stat');
或者
popen('top -b -n 2 | grep -E "(Cpu)"',"r");
取的好象都不准确，每次都是0.4%，但在服务器上用top查看 变化是0.7,1.0,14.....
一般如何快速获取啊
回复讨论(解决方案)
top看的那个不说cpu的利用率
不是
top看的那个不说cpu的利用率
不是
top看的那个不说cpu的利用率
哦，那PHP可以获取到CPU即时使用百分比吗？或者和top的一样也行啊，只是想获取个数据。
LINUX下查看CPU使用率的命令
不是
top看的那个不说cpu的利用率
哦，那PHP可以获取到CPU即时使用百分比吗？或者和top的一样也行啊，只是想获取个数据。
你的系统有安装sysstat么，可以使用mpstat、sar等
http://www.cyberciti.biz/tips/how-do-i-find-out-linux-cpu-utilization.html
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