An interesting side effect of the copy-on-write design is that all writes to the file system become sequential writes (because remapping is always occurring).
即写即拷设计的一个有趣的副作用是文件系统的所有写入都成为顺序写入(因为始终进行重新映射)。
3
For JSF2, there are additional file system performance enhancements including sequential page read ahead and sequential and random write behind.