Taskbar Latency and Kernel Calls
I work quickly on my computer and I get frustrated when I am forced to wait on an operation that should be fast. A persistent nuisance on my over-powered home laptop is that closing windows on the taskbar is slow. I right-click on an entry, wait for the menu to appear, and then select “Close window”. The mouse movement should be the slow part of this but instead I find that the delay before the menu appears is the longest component.
What this says is that, over the course of two right-mouse clicks, RuntimeBroker.exe, thread 10,252, issued 229,604 ReadFile calls, reading a total of 15,686,586 bytes. That is an average read of 68 bytes each time.