How are people currently profiling the performance of their ASP.NET MVC applications?
I'd be most interested in simple and free approaches.
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6 Answers
Stack Overflow have released their own profiler as a new opensource project
UPDATE:
It's also worth mentioning Glimpse as another alternative profiling tool
Glimpse is a helpful tool. It provides many detailed information and has support for EF and both Asp.net webforms and MVC. Hope this helps someone.
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Tod Birdsall
For those, like me, who are interested in Glimpse for use in ASP.NET Core 2.0; it does not appear to be currently supported: github.com/Glimpse/Glimpse.Prototype/issues/123
Can you use this technique? It's free and it works with any language or platform. It precisely locates points to optimize, though as a measurement method it is imprecise. It is low-tech, but here's discussion of why it works.
2 Comments
UpTheCreek
Unless I misunderstand something, I think this only will work with Java based applications.
Mike Dunlavey
@UpTheCreek: I've used it on every language and platform I've ever used since I stumbled on it, as others have. All you need is a way to halt the program at a random time (not with a breakpoint) and examine its state, including the call stack. If there are multiple threads, either halt them all, or deal with one at a time. It works because if some activity takes x% of the time, then you will catch it in the act x% of the times you halt it. (It's not highly accurate at measuring the problem. It is highly accurate at finding it.)
My best candidate is dotTrace profile from JetBrains.Have a look here
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If you're serious about performance profiling then you might need to spend some money. I've spent a lot of time using Redgate's ANTS profiler and it has helped me find some very unusual aspects of my code that have caused performance problems.
Mike's suggested technique is good, and I've used that too, but if you really want to dig into the hot spots and how those hot spots were called then tools like dotTrace and ANTS are very good. Personally I prefer ANTS but dotTrace will do the job too.
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You may take a look at JMeter which is a free Java based desktop application allowing you to load test any web application. Another free tool is The Grinder.
2 Comments
UpTheCreek
Thanks, these are interesting and may be useful to me, but I'm really looking for solutions that will be able to pinpoint bottlenecks/candidates for optimisation within the application code.
Darin Dimitrov
There are some good profilers such as ANTS Profiler from Redate or dotTRACE from JetBrains but they are commercial. They provide trial versions that might be worth checking though.
