The hit ratios for data and index pages reflect the number of times a page request was handled by the buffer pool directly without requiring disk I/O.

数据和索引页面的击中率反映了缓冲池在不需要磁盘 I/O 的情况下直接处理一个页面请求的时间量。

youdao

So, if hit ratios are low, a significant amount of disk I/O is taking place.

所以，如果击中率较低，表明正在发生大量的磁盘 I/O。

youdao

Bring up top (just run top in a shell), then hit o (that's a capital o, as in "order by"), then hit q, then hit Return.

还是使用top(就是在shell中运行top命令)，然后输入o(这是个大写的o，意思是“按……排序”)，然后输入q，然后按回车键。

youdao