Tools to detect False Sharing in a C/C++ application

Question

Are there any tools that detect and report False Sharing for applications written in C or C++?

Answer 1

Try Sheriff and Predator. Sheriff is at https://github.com/plasma-umass/sheriff, while Predator is at https://github.com/plasma-umass/Predator. Predator is a compiler-based approach that you have to recompile your program using a new LLVM compiler. It is the most exhaustive detection tool up to now. Sheriff is library but it can only detect false sharing if you are using pthreads library.

Answer 2

Try the DRD (data race detection) module of valgrind.

From the manual it looks like it can be used to detect False sharing.

Answer 3

Perf("Performance Counters for Linux")

Commands:

sudo perf record -e cache-misses,anything_else_you_want ./your_program 
sudo perf report