Everyone loves a shiny new kernel. The latest one, 2.6.32, was released on Dec. 3 and there are some nice updates/fixes for file systems and IO in general. But there is a very important change for the CFQ IO scheduler that you need to understand.
The last article was a quick overview of the 4 schedulers in the Linux kernel. This article takes a closer look at the Completely Fair Queuing (CFQ) scheduler and how you can tune it.