如果你大量地使用MyISAM表，那么你也可以增加操作系统的缓存空间使得MySQL也能用得着。

If you're using MyISAM seriously you can also add the size of Operation System cache you would like MySQL to use for your table.

youdao

这从安全性的角度来看没有价值，而且实际上会略微增加风险，但是有可能使用操作系统级审计。

This has no value from a security perspective and in fact slightly increases risks, but does make it possible to use operating system level accounting.

youdao

在安装操作系统之前，建议给虚拟机增加256 MB的内存，达到512 MB。

Before you install your operating system, we recommend adding another 256 MB of memory to the virtual machine for a total of 512 MB.

youdao