vmstat 命令可以提供虚拟内存使用情况的长期视图，包括提供有关交换空间与 RAM 之间正在活动地交换的内存量的信息。
The vmstat command provides a long-term view of virtual usage, including providing information on the amount of memory being actively swapped between swap space and RAM.
以这种方式使用的交换文件通常决不是针对交换空间问题的长期解决方案。
Swap files used in this way are never generally a long-term solution to the problem for swap space.
购买高网页级别的链接或者随机交换链接是最坏的方法，长期来看这可能不会给你的网站带来积极影响。
Buying PageRank-passing links or randomly exchanging links are the worst ways of attempting to gather links and they're likely to have no positive impact on your site's performance over time.
应用推荐