Windows NT kernel is a marvel of engineering. It's incredibly flexible, you can build crazy stuff on top of it without having access to its source code. As an

Windows NT kernel is a marvel of engineering. It's incredibly flexible, you can build crazy stuff on top of it without having access to its source code. As an example, Parallels had a version of Docker-like containers on WINDOWS in 2006! They implemented it as a wrapper on top of the native Windows NT kernel API. But the downside of this flexibility is relatively slow filesystem operations. It was a conscious trade-off from Windows kernel developers, they thought that flexibility was more important.