What to avoid for performance reasons in multithreaded code?

Question

I\'m currently reviewing/refactoring a multithreaded application which is supposed to be multithreaded in order to be able to use all the available cores and theoretically deliv

Answer 1

You should first be familiar with Amdahl's law.

If you are using Java, I recommend the book Java Concurrency in Practice; however, most of its help is specific to the Java language (Java 5 or later).

In general, reducing the amount of shared memory increases the amount of parallelism possible, and for performance that should be a major consideration.

Threading with GUI's is another thing to be aware of, but it looks like it is not relevant for this particular problem.