I am a student at Virginia Tech and am writing a research paper for a class of mine about database performance issues. I found an article of yours online that was very informative and I was going to use it as a reference, but I have a question that I hope you could answer for me. The article I'm referring to is SQL Server Performance Trend Analysis Part 4: Interpreting Performance Monitor Counters. My question is from the section about CPU performance. In it you talk about processor queue length and you mention that if the processor queue length exceeds 2 per CPU for continuous periods...you probably have a CPU performance bottleneck. What I'm wondering is what does the 2 represent in the measure? Is is CPU cycles, minutes, etc?