摘要：测试cpu性能 time echo "scale=5000; 4*a(1)" | bc -l -q cpu频率 cpupower monitor 僵尸进程 ps -A -ostat,ppid,pid,cmd | grep -e '^[Zz]' 清除服务器缓存 echo 1 > /proc/sys/v 阅读全文