关于swap的介绍,挺详细,值得一看: https://help.ubuntu.com/community/SwapFaq


  • To check the swappiness value cat /proc/sys/vm/swappiness
  • To change the swappiness value A temporary change (lost on reboot) with a swappiness value of 10 can be made with sudo sysctl vm.swappiness=10
  • To make a change permanent, edit the configuration file with your favorite editor: sudo gedit /etc/sysctl.conf
  • Search for vm.swappiness and change its value as desired. If vm.swappiness does not exist, add it to the end of the file like so: vm.swappiness=10内存如果够大,这里完全可以设为0,或者干脆干掉swap分区 Save the file and reboot.