Mirror
/
cpython
mirror of https://github.com/python/cpython
4
1
Fork 0
Code Issues Releases Wiki Activity

Speed test_thread up from 51.328s to 0.081s by reducing its sleep times. We 

still sleep at all to make it likely that all threads are active at the same
time.
This commit is contained in:
Jeffrey Yasskin 2008-03-18 04:56:06 +00:00
parent b1d3d96374
commit a14585308a
1 changed files with 10 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
Lib/test/test_thread.py
View File

@ -10,9 +10,12 @@ NUMTASKS = 10
NUMTRIPS = 3 NUMTRIPS = 3
_print_mutex = thread.allocate_lock()
def verbose_print(arg): def verbose_print(arg):
"""Helper function for printing out debugging output.""" """Helper function for printing out debugging output."""
if test_support.verbose: if test_support.verbose:
with _print_mutex:
print arg print arg
@ -38,8 +41,8 @@ class ThreadRunningTests(BasicThreadTest):
def task(self, ident): def task(self, ident):
with self.random_mutex: with self.random_mutex:
delay = random.random() * NUMTASKS delay = random.random() / 10000.0
verbose_print("task %s will run for %s" % (ident, round(delay, 1))) verbose_print("task %s will run for %sus" % (ident, round(delay*1e6)))
time.sleep(delay) time.sleep(delay)
verbose_print("task %s done" % ident) verbose_print("task %s done" % ident)
with self.running_mutex: with self.running_mutex:
@ -138,11 +141,12 @@ class BarrierTest(BasicThreadTest):
# give it a good chance to enter the next # give it a good chance to enter the next
# barrier before the others are all out # barrier before the others are all out
# of the current one # of the current one
delay = 0.001 delay = 0
else: else:
with self.random_mutex: with self.random_mutex:
delay = random.random() * NUMTASKS delay = random.random() / 10000.0
verbose_print("task %s will run for %s" % (ident, round(delay, 1))) verbose_print("task %s will run for %sus" %
(ident, round(delay * 1e6)))
time.sleep(delay) time.sleep(delay)
verbose_print("task %s entering %s" % (ident, i)) verbose_print("task %s entering %s" % (ident, i))
self.bar.enter() self.bar.enter()