There are lots of [questions on ServerFault](http://serverfault.com/search?q=bottleneck) (2.3k as of this writing) about identifying bottlenecks. I just came across http://serverfault.com/questions/711644/cpu-overloaded-but-no-proccess-is-using-more-than-1 when reviewing, and I'm not certain whether or not it's appropriate to flag questions like this as a duplicate of http://serverfault.com/questions/384686/can-you-help-me-with-my-capacity-planning.

I do see that there are two [canonical questions](http://meta.serverfault.com/questions/1986/what-are-the-canonical-answers-weve-discovered-over-the-years/3387#3387) on bottleneck identification, which leads me to believe that there is a distinction drawn between the two in this community. I guess I just feel like there should be some canonical Q/A on bottleneck identification, like there is for capacity planning, and don't see the value in having so many different questions and answers concerning bottleneck identification.