当程序执行导致命令不能从快取内存中找到时，需要从主内存中找到命令，那是微处理器就停下来等待。

When the program execution leads to instructions not in the cache, then the instructions need to be fetched from the main memory and the microprocessor has to stop and wait.

youdao

当程序执行导致命令不能从快取内存中找到时，需要从主内存中找到命令，那是微处理器就停下来等待。

When the program execution leads to instructions not in the cache, then the instructions need to be fetched from the main memory and the microprocessor has to stop and wait.

youdao