Setting a number of cfthread in admin means the maximum no of
cfthreads that can run in parallel. If you try to create a cfthread
when the no of cfthreads running at that point of time has reached
the max limit, the cfthread will get queued and will start
executing it when some thread becomes free. When you set it to 500,
it does not mean that there will be 500 cfthreads running at all
the point. It is the max limit. The min limit will remain at 1.