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Comment: Re:you really need more than hprof ? (Score 5, Informative) 153

by andrewwilcox (#14919095) Attached to: Build Your Own Java Performance Profiling Tool
As was noted in the article, hprof has a number of short falls:
  • It is slow. If you've spent any amount of time using hprof, then you know what I'm talking about!
  • You can't start and stop it at runtime. If you've ever tried to profile a web application with hprof, you know what I'm talking about!
  • Filtering. hprof profiles everything and so it's slow and that output is expansive. When I'm profiling code, I want to know how my code is performing, not how some third party library is performing.

I like hprof -- it's helped me out more times that I can say, but it also has some short comings, which is why I developed JIP

"Of course power tools and alcohol don't mix. Everyone knows power tools aren't soluble in alcohol..." -- Crazy Nigel