Controlling scheduling priority of python threads?

Question

I\'ve written a script that uses two thread pools of ten threads each to pull in data from an API. The thread pool implements this code on ActiveState. Each thread pool is

Answer 1

It doesn't work, but I tried:

1. getting the parent pid and priority
2. launching threads using concurrent.futures.ThreadPoolExecutor
3. using ctypes to get the (linux) thread id from within the thread(works)
4. using the tid with os.setpriority(os.PRIO_PROCESS,tid,parent_priority+1)
5. calling pool.shutdown() from the parent.

Even with liberal sprinkling of os.sched_yield(), the child threads never actually run past the setpriority().

Reading man pages, it seems threads don't have the capability to change (even their) scheduling priority; you have to do something with "capabilities" to give the thread the "CAP_SYS_NICE" capability. Running the process with root permissions didn't help either; child threads still don't run.