First, roughly half of the memory-mapped files are read-only, which means they can be shared across multiple simultaneously running processes, reducing startup time considerably and total memory needed.

• 首先,差不多有一半内存映射文件是只读的,这意味着可以在多个并发运行的进程之间共享它们,从而在相当程度上减少了启动时间和需要的全部内存。