Kernel, OS

In Data Network equipment market, CISCO is the giant, who is the first one getting into the market and who owns the biggest share in this market. Huawei is catching him up. But the latest prediction in Wallstreet said that CISCO is still unbeatable in OS and router.
So come back to the old topic, OS is the Core value of Information Era.
It is the most complicating project, similiar to compiler.
It is the most basic layer for all applications, no matter desktop, server, or router.
It is the most key element in performance providing.

OS involves Scheduler, File system, and communication. Scheduler determines computing, FS determines storage, and communicaiton determines exchanging. It almost covers all the aspects of information technologies. It has diversial patterns due to how much computing power you have and how much data you will handle. So it is a really amazing kaleidoscope.

Think about Google: why is so great? Because it is neat philosophy: simpilicity, friendly, convenience. Google is always designed in the way that tries to get rid of annoyance as much as possible, make your operations shortcut and simple straight.
But on the other hand, that's actually not all. It is excellent more based on its quick response. But how can it make so quick response instead of waiting and waiting in dead cycle? It is great power of computing. Where does their great computing power come from? personal desktops. How do they make personal desktops provide so great power? The OS with efficient algorithm manages the distributed PCs.

So for google, its core value is still OS and their GFS that are so delicated to be efficient.