Profiling thread synchronization synchronization conflicts

Question

In the past, I used performance profiling tools such as nprof, the Equatec profiler, and Yourkit profiler to identify and remove / reduce performance bottlenecks in code that mostly runs on a single thread (serialized execution). I am currently writing a lot of multithreaded code that can be slowed down by blocking; What tools and tricks can be used to determine where the lock conflict occurs and by how much?

Answer 1

It will be available soon in beta in Visual Studio 2010 2. Here's a video of this tool .

Answer 2

Try Intel's ThreadChecker . It works on both Windows and Linux. If you are working with Windows, try Parallel Studio . It provides an easy to use lock and wait profiler. It shows the general concurrency at runtime, which gives hints about prohibition and bad concurrency. Tools now do what you want.

Answer 3

For development on Windows, validation software has several ( http://www.softwareverify.com/thread.html ).

For C, C ++ Delphi, try Thread Validator.

For Java, there is also a Java Thread validator.

There are also experimental versions for Python and Ruby.