Hi there,
I just found that recent change in the language to make all global
variables thread-local by default. This makes me think of a major
performance problem: every thread creation will have to copy all the
thread-local variables. This makes it impossible to efficiently spawn
many light-weight threads even if they do not make use of the global
variables at all.
I guess I am not the first one to spot this problem? I believe that
thread creation should come with as little overhead as possible. Maybe a
concept of light-weight threads based on side-effect free code could
complement the regular threads?
Just a quick idea to throw into discussion...
Greetings,
Norbert
