mark解决办法

free -m  
mkdir -p /var/_swap_  
cd /var/_swap_  
#Here, 1M * 2000 ~= 2GB of swap memory  
dd if=/dev/zero of=swapfile bs=1M count=2000  
mkswap swapfile  
swapon swapfile  
echo “/var/_swap_/swapfile none swap sw 0 0” >> /etc/fstab  
#cat /proc/meminfo  
free -m