On Mar 31, 2011, at 11:48 AM, dsimcha wrote: > == Quote from Andrej Mitrovic ([email protected])'s article >> Are fibers really better/faster than threads? I've heard rumors that >> they perform exactly the same, and that there's no benefit of using >> fibers over threads. Is that true? > > Here are some key differences between fibers (as currently implemented in > core.thread; I have no idea how this applies to the general case in other > languages) and threads: > > 1. Fibers can't be used to implement parallelism. If you have N > 1 fibers > running on one hardware thread, your code will only use a single core.
It bears mentioning that this has interesting implications for the default thread-local storage of statics. All fibers running on a thread will currently share the thread's static data. This could be worked around by doing TLS manually at the fiber level, but it's a non-trivial change.
