L2SS-245: add setting of the polling thread pool size

devices/test/devices/monitoring_performance_test.py

@@ -16,7 +16,7 @@ sys.path.append(parentdir)
 
 import logging
 import numpy
-from tango import DevState
+from tango import DevState, Util
 from tango.server import run, Device, attribute
 from numpy import random
 from time import time
@@ -58,6 +58,12 @@ class Monitoring_Performance_Device(Device):
 
     def init_device(self):
         Device.init_device(self)
+
+        util = tango.Util.instance()
+        logger.info("Current polling thread pool size = {}".format(util.get_polling_threads_pool_size()))
+        util.get_polling_threads_pool_size(100)
+        logger.info("New polling thread pool size = {}".format(util.get_polling_threads_pool_size()))
+
         self.set_state(DevState.OFF)
 
         self.small_array_r.set_data_ready_event(True)