1，写crontab定时释放
#定时释放内存
12 10 * * * root echo 3 > /proc/sys/vm/drop_caches
2，手动释放内存
sudo sync;sudo sysctl -w vm.drop_caches=3 > /dev/null
1，写crontab定时释放
#定时释放内存
12 10 * * * root echo 3 > /proc/sys/vm/drop_caches
2，手动释放内存
sudo sync;sudo sysctl -w vm.drop_caches=3 > /dev/null