//获取cpu的空闲百分比 function get_cpufree(){ $cmd = "top -n 1 -b -d 0.1 | grep 'Cpu'";//调用top命令和grep命令 $lastline = exec($cmd,$output); preg_match('/(\S+)%id/',$lastline, $matches);//正则表达式获取cpu空闲百分比 $cpufree = $matches[1]; return $cpufree; } //获取内存空闲百分比 function get_memfree(){ $cmd = 'free -m';//调用free命令 $lastline = exec($cmd,$output); preg_match('/Mem:\s+(\d+)/',$output[1], $matches); $memtotal = $matches[1]; preg_match('/(\d+)$/',$output[2], $matches); $memfree = $matches[1]*100.0/$memtotal; return $memfree; } //获取某个程序当前的进程数 function get_proc_count($name){ $cmd = "ps -e";//调用ps命令 $output = shell_exec($cmd); $result = substr_count($output, ' '.$name); return $result; }
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