CPU相关 # 查看CPU物理核心cat /proc/cpuinfo | grep 'physical id' | sort -u | wc -l# 查看CPU核心总数cat /proc/cpuinfo | grep 'cpu cores' | wc -l# 查看逻辑CPUcat /proc/cpuinfo | grep 'processor' | wc -l# 查看指定进程的线程情况ps -mp 8463 -o THREAD,tid,time# 查看进程的线程CPU占用top -H -p 32286 内存相关 # 释放页面缓存echo 1 > /proc/sys/vm/drop_caches# 释放目录缓存、文件缓存echo 2 > /proc/sys/vm/drop_caches# 释放页面缓存、目录缓存、文件缓存echo 3 > /proc/sys/vm/drop_caches# 查看是否开启内存大页cat /proc/meminfo | grep 'Huge'# 关闭透明大页echo never > /sys/kernel/mm/transparent_hugepage/enabledecho never > /sys/kernel/mm/transparent_hugepage/defragecho 'echo never > /sys/kernel/mm/transparent_hugepage/defrag' >> /etc/rc.d/rc.localecho 'echo never > /sys/kernel/mm/transparent_hugepage/enabled' >> /etc/rc.d/rc.local Docker相关 # 清理无用的容器docker system prune