native threads

Hi

In my current implementation of a classical actor model
I found that using ccl processes is much slower than sbcl threads

to create a thread I use ccl:process-run-function, is there another way to
create native threads that are much faster; I do not need the ccl
scheduling,
I want to create threads that are scheduled by the OS, I think that the ccl
scheduler is the reason why my ccl tests are much slower than the tests run
with sbcl

Regards
-- 
Taoufik Dachraoui