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This is just a brief summary of some of the tools available within VTune Amplifier. For more details, please visit [https://software.intel.com/en-us/intel-vtune-amplifier-xe Intel VTune Amplifier website].
= Summary =
In conclusion, keep an eye out for false sharing; its a scalability killer. The general case to watch out for is when you have two objects or fields that are constantly accessed for reading or writing by different threads, at least one of the threads is doing writes, and the objects close enough in memory that they fall on the same cache line. Detecting false sharing isn' t always easy, so make use of CPU monitors and performance analysis tools. But Typical CPU monitors can completely mask memory waiting by regarding it as busy time, so look for code performance analysis tools that measure cycles per instruction (CPI) and/or cache misses. One such tool is Intel VTune Amplifier. You can also use visual studio's Performance Profiler.
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Finally, you can avoid false sharing by reducing the frequency of updates to the falsely shared variables; for example, update local data instead of the shared variable. Also, you can ensure a variable is completely unshared by using padding or aligning data on cache line in such a what that it ensures that no other data precedes or follows a key object in the same cache line.
