<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:

def threads():
    '''
    This tests the performance of the processor's scheduler

    CLI Example:

    .. code-block:: bash

        salt '*' sysbench.threads
    '''

    # Test data
    thread_yields = [100, 200, 500, 1000]
    thread_locks = [2, 4, 8, 16]

    # Initializing the test variables
    test_command = 'sysbench --num-threads=64 --test=threads '
    test_command += '--thread-yields={0} --thread-locks={1} run '
    result = None
    ret_val = {}

    # Test begins!
    for yields, locks in zip(thread_yields, thread_locks):
        key = 'Yields: {0} Locks: {1}'.format(yields, locks)
        run_command = test_command.format(yields, locks)
        result = __salt__['cmd.run'](run_command)
        ret_val[key] = _parser(result)

    return ret_val