Find & Fix Performance Bottlenecks

摘要

Bottleneck is a wonderfully descriptive term. It describes an artificial constraint on some form of communication, interaction, or transfer of information. And it leads one to believe that some magical combination of luck, money, and ingenuity can smash that bottleneck and let all good things flow. The trouble with performance bottlenecks is that they can be tough to identify. Is it the CPU? The network? A clumsy bit of code? Often, the most obvious culprit is actually downstream of something larger and more mystifying. And when performance riddles remain unsolved, IT management may find itself faced with a Hobson's choice between admitting ignorance and making up excuses. Fortunately, as with medical diagnoses or detective work, experience helps. Drawing on our years of sleuthing and experimentation, we've collected 15 of the most likely ailments — and suggested remedies - to help your IT operation track down and crack performance problems.