Those Red Bars are "Kernel" % usage.
A kernel is he central module of an operating system. It is the part of the operating system that loads first, and it remains in main memory. Because it stays in memory, it is important for the kernel to be as small as possible while still providing all the essential services required by other parts of the operating system and applications. Typically, the kernel is responsible for memory management, process and task management, and disk management.
The readout is good just as long as it stays below your green CPU usage most of the time.
INTEL i7 930
3x2gb Corsair Dominators
EVGA GTX 480