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[3.13] gh-109700: Improve stress tests for interpreter creation (GH-109946) by miss-islington · Pull Request #133391 · python/cpython · GitHub

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[3.13] gh-109700: Improve stress tests for interpreter creation (GH-109946) #133391

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Merged
serhiy-storchaka merged 1 commit into from
May 4, 2025
+21 −9
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[3.13] gh-109700: Improve stress tests for interpreter creation (GH-109946) #133391

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30 changes: 21 additions & 9 deletions Lib/test/test_interpreters/test_stress.py
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Original file line number Diff line number Diff line change
Expand Up @@ -21,21 +21,29 @@ def test_create_many_sequential(self):
for _ in range(100):
interp = interpreters.create()
alive.append(interp)
del alive
support.gc_collect()

@support.requires_resource('cpu')
@threading_helper.requires_working_threading()
def test_create_many_threaded(self):
@support.bigmemtest(size=200, memuse=32*2**20, dry_run=False)
def test_create_many_threaded(self, size):
alive = []
start = threading.Event()
def task():
# try to create all interpreters simultaneously
if not start.wait(support.SHORT_TIMEOUT):
raise TimeoutError
interp = interpreters.create()
alive.append(interp)
threads = (threading.Thread(target=task) for _ in range(200))
threads = [threading.Thread(target=task) for _ in range(size)]
with threading_helper.start_threads(threads):
pass
start.set()
del alive
support.gc_collect()

@support.requires_resource('cpu')
@threading_helper.requires_working_threading()
def test_many_threads_running_interp_in_other_interp(self):
@support.bigmemtest(size=200, memuse=34*2**20, dry_run=False)
def test_many_threads_running_interp_in_other_interp(self, size):
start = threading.Event()
interp = interpreters.create()

script = f"""if True:
Expand All @@ -47,6 +55,9 @@ def run():
interp = interpreters.create()
alreadyrunning = (f'{interpreters.InterpreterError}: '
'interpreter already running')
# try to run all interpreters simultaneously
if not start.wait(support.SHORT_TIMEOUT):
raise TimeoutError
success = False
while not success:
try:
Expand All @@ -58,9 +69,10 @@ def run():
else:
success = True

threads = (threading.Thread(target=run) for _ in range(200))
threads = [threading.Thread(target=run) for _ in range(size)]
with threading_helper.start_threads(threads):
pass
start.set()
support.gc_collect()


if __name__ == '__main__':
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