GitLab

NEO functional tests use pdb.wait() in a few places, for example in
NEOCluster .run(), .start() and .expectCondition(). The wait
implementation uses polling with exponentially growing wait period.

With the following instrumentation

	--- a/neo/tests/cluster.py
	+++ b/neo/tests/cluster.py
	@@ -236,6 +236,7 @@ def wait(self, test, timeout):
	                         return False
	             finally:
	                 cluster_dict.release()
	+            print 'next_sleep:', next_sleep
	             sleep(next_sleep)
	         return True

during execution of functional tests it is not uncommon to see the
following sleep periods

	next_sleep: 0.1
	next_sleep: 0.1
	next_sleep: 0.15
	next_sleep: 0.225
	next_sleep: 0.3375
	next_sleep: 0.50625
	next_sleep: 0.1
	next_sleep: 0.1
	next_sleep: 0.15
	next_sleep: 0.225
	next_sleep: 0.3375
	next_sleep: 0.50625
	next_sleep: 0.1
	next_sleep: 0.1
	next_sleep: 0.1
	next_sleep: 0.15
	next_sleep: 0....