Dear All, I'm not aware of a way to set the stack size for a new thread in either Boost.Thread or the proposed std::thread. Is this something that should be considered? It seems that on my 32-bit Linux box I get 8 MByte stacks by default. This allows a maximum of 512 threads per process with 32-bit addresses. Although 8 MBytes and 512 threads should be OK for most applications most of the time, it's not hard to imagine scenarios where either 8 MBytes or 512 threads is not enough. Would it be possible for the stack size to be an additional parameter to the thread constructor, with a default? (I don't think that the "native handle" in std::thread helps, since you don't have that handle until the thread has been created at which point it's too late. In any case, I guess that Windows must also have a way to set the stack size, and it would be helpful to have an OS-independent way to set it.) Regards, Phil.