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python3/SOURCES/00333-reduce-pgo-tests.patch

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diff --git a/Lib/test/libregrtest/cmdline.py b/Lib/test/libregrtest/cmdline.py
index 538ff05..e7f2013 100644
--- a/Lib/test/libregrtest/cmdline.py
+++ b/Lib/test/libregrtest/cmdline.py
@@ -263,7 +263,9 @@ def _create_parser():
help='only write the name of test cases that will be run'
' , don\'t execute them')
group.add_argument('-P', '--pgo', dest='pgo', action='store_true',
- help='enable Profile Guided Optimization training')
+ help='enable Profile Guided Optimization (PGO) training')
+ group.add_argument('--pgo-extended', action='store_true',
+ help='enable extended PGO training (slower training)')
group.add_argument('--fail-env-changed', action='store_true',
help='if a test file alters the environment, mark '
'the test as failed')
@@ -339,6 +341,8 @@ def _parse_args(args, **kwargs):
parser.error("-G/--failfast needs either -v or -W")
if ns.pgo and (ns.verbose or ns.verbose2 or ns.verbose3):
parser.error("--pgo/-v don't go together!")
+ if ns.pgo_extended:
+ ns.pgo = True # pgo_extended implies pgo
if ns.nowindows:
print("Warning: the --nowindows (-n) option is deprecated. "
diff --git a/Lib/test/libregrtest/main.py b/Lib/test/libregrtest/main.py
index b6d05f6..524dbfa 100644
--- a/Lib/test/libregrtest/main.py
+++ b/Lib/test/libregrtest/main.py
@@ -17,6 +17,7 @@ from test.libregrtest.runtest import (
INTERRUPTED, CHILD_ERROR, TEST_DID_NOT_RUN,
PROGRESS_MIN_TIME, format_test_result)
from test.libregrtest.setup import setup_tests
+from test.libregrtest.pgo import setup_pgo_tests
from test.libregrtest.utils import removepy, count, format_duration, printlist
from test import support
try:
@@ -214,6 +215,10 @@ class Regrtest:
removepy(self.tests)
+ if self.ns.pgo:
+ # add default PGO tests if no tests are specified
+ setup_pgo_tests(self.ns)
+
stdtests = STDTESTS[:]
nottests = NOTTESTS.copy()
if self.ns.exclude:
@@ -601,6 +606,7 @@ class Regrtest:
input("Press any key to continue...")
support.PGO = self.ns.pgo
+ support.PGO_EXTENDED = self.ns.pgo_extended
setup_tests(self.ns)
diff --git a/Lib/test/libregrtest/pgo.py b/Lib/test/libregrtest/pgo.py
new file mode 100644
index 0000000..379ff05
--- /dev/null
+++ b/Lib/test/libregrtest/pgo.py
@@ -0,0 +1,55 @@
+# Set of tests run by default if --pgo is specified. The tests below were
+# chosen based on the following criteria: either they exercise a commonly used
+# C extension module or type, or they run some relatively typical Python code.
+# Long running tests should be avoided because the PGO instrumented executable
+# runs slowly.
+PGO_TESTS = [
+ 'test_array',
+ 'test_base64',
+ 'test_binascii',
+ 'test_binop',
+ 'test_bisect',
+ 'test_bytes',
+ 'test_bz2',
+ 'test_cmath',
+ 'test_codecs',
+ 'test_collections',
+ 'test_complex',
+ 'test_dataclasses',
+ 'test_datetime',
+ 'test_decimal',
+ 'test_difflib',
+ 'test_embed',
+ 'test_float',
+ 'test_fstring',
+ 'test_functools',
+ 'test_generators',
+ 'test_hashlib',
+ 'test_heapq',
+ 'test_int',
+ 'test_itertools',
+ 'test_json',
+ 'test_long',
+ 'test_lzma',
+ 'test_math',
+ 'test_memoryview',
+ 'test_operator',
+ 'test_ordered_dict',
+ 'test_pickle',
+ 'test_pprint',
+ 'test_re',
+ 'test_set',
+ 'test_sqlite',
+ 'test_statistics',
+ 'test_struct',
+ 'test_tabnanny',
+ 'test_time',
+ 'test_unicode',
+ 'test_xml_etree',
+ 'test_xml_etree_c',
+]
+
+def setup_pgo_tests(ns):
+ if not ns.args and not ns.pgo_extended:
+ # run default set of tests for PGO training
+ ns.args = PGO_TESTS[:]
diff --git a/Lib/test/pickletester.py b/Lib/test/pickletester.py
index 764057a..468ee46 100644
--- a/Lib/test/pickletester.py
+++ b/Lib/test/pickletester.py
@@ -2039,6 +2039,7 @@ class AbstractPickleTests(unittest.TestCase):
FRAME_SIZE_TARGET = 64 * 1024
+ @support.skip_if_pgo_task
def check_frame_opcodes(self, pickled):
"""
Check the arguments of FRAME opcodes in a protocol 4+ pickle.
@@ -2059,6 +2060,7 @@ class AbstractPickleTests(unittest.TestCase):
frame_size = len(pickled) - last_pos - frame_opcode_size
self.assertEqual(frame_size, last_arg)
+ @support.skip_if_pgo_task
def test_framing_many_objects(self):
obj = list(range(10**5))
for proto in range(4, pickle.HIGHEST_PROTOCOL + 1):
diff --git a/Lib/test/support/__init__.py b/Lib/test/support/__init__.py
index 66c0fed..e80a819 100644
--- a/Lib/test/support/__init__.py
+++ b/Lib/test/support/__init__.py
@@ -953,6 +953,10 @@ SAVEDCWD = os.getcwd()
# useful for PGO
PGO = False
+# Set by libregrtest/main.py if we are running the extended (time consuming)
+# PGO task. If this is True, PGO is also True.
+PGO_EXTENDED = False
+
@contextlib.contextmanager
def temp_dir(path=None, quiet=False):
"""Return a context manager that creates a temporary directory.
@@ -2442,6 +2446,11 @@ def skip_unless_xattr(test):
msg = "no non-broken extended attribute support"
return test if ok else unittest.skip(msg)(test)
+def skip_if_pgo_task(test):
+ """Skip decorator for tests not run in (non-extended) PGO task"""
+ ok = not PGO or PGO_EXTENDED
+ msg = "Not run for (non-extended) PGO task"
+ return test if ok else unittest.skip(msg)(test)
def fs_is_case_insensitive(directory):
"""Detects if the file system for the specified directory is case-insensitive."""
diff --git a/Lib/test/test_bz2.py b/Lib/test/test_bz2.py
index f340f23..ebb151c 100644
--- a/Lib/test/test_bz2.py
+++ b/Lib/test/test_bz2.py
@@ -654,6 +654,7 @@ class BZ2CompressorTest(BaseTest):
data += bz2c.flush()
self.assertEqual(ext_decompress(data), self.TEXT)
+ @support.skip_if_pgo_task
@bigmemtest(size=_4G + 100, memuse=2)
def testCompress4G(self, size):
# "Test BZ2Compressor.compress()/flush() with >4GiB input"
@@ -712,6 +713,7 @@ class BZ2DecompressorTest(BaseTest):
self.assertRaises(EOFError, bz2d.decompress, b"anything")
self.assertRaises(EOFError, bz2d.decompress, b"")
+ @support.skip_if_pgo_task
@bigmemtest(size=_4G + 100, memuse=3.3)
def testDecompress4G(self, size):
# "Test BZ2Decompressor.decompress() with >4GiB input"
diff --git a/Lib/test/test_itertools.py b/Lib/test/test_itertools.py
index 9317951..8c1d016 100644
--- a/Lib/test/test_itertools.py
+++ b/Lib/test/test_itertools.py
@@ -2023,6 +2023,7 @@ class RegressionTests(unittest.TestCase):
self.assertRaises(AssertionError, list, cycle(gen1()))
self.assertEqual(hist, [0,1])
+ @support.skip_if_pgo_task
def test_long_chain_of_empty_iterables(self):
# Make sure itertools.chain doesn't run into recursion limits when
# dealing with long chains of empty iterables. Even with a high
diff --git a/Lib/test/test_lzma.py b/Lib/test/test_lzma.py
index 3dc2c1e..117de0a 100644
--- a/Lib/test/test_lzma.py
+++ b/Lib/test/test_lzma.py
@@ -333,6 +333,7 @@ class CompressorDecompressorTestCase(unittest.TestCase):
# Test with inputs larger than 4GiB.
+ @support.skip_if_pgo_task
@bigmemtest(size=_4G + 100, memuse=2)
def test_compressor_bigmem(self, size):
lzc = LZMACompressor()
@@ -344,6 +345,7 @@ class CompressorDecompressorTestCase(unittest.TestCase):
finally:
ddata = None
+ @support.skip_if_pgo_task
@bigmemtest(size=_4G + 100, memuse=3)
def test_decompressor_bigmem(self, size):
lzd = LZMADecompressor()
diff --git a/Lib/test/test_regrtest.py b/Lib/test/test_regrtest.py
index 5347bb1..9d83217 100644
--- a/Lib/test/test_regrtest.py
+++ b/Lib/test/test_regrtest.py
@@ -6,6 +6,7 @@ Note: test_regrtest cannot be run twice in parallel.
import contextlib
import faulthandler
+import glob
import io
import os.path
import platform
@@ -532,6 +533,31 @@ class BaseTestCase(unittest.TestCase):
return proc.stdout
+class CheckActualTests(BaseTestCase):
+ """
+ Check that regrtest appears to find the expected set of tests.
+ """
+
+ def test_finds_expected_number_of_tests(self):
+ args = ['-Wd', '-E', '-bb', '-m', 'test.regrtest', '--list-tests']
+ output = self.run_python(args)
+ rough_number_of_tests_found = len(output.splitlines())
+ actual_testsuite_glob = os.path.join(os.path.dirname(__file__),
+ 'test*.py')
+ rough_counted_test_py_files = len(glob.glob(actual_testsuite_glob))
+ # We're not trying to duplicate test finding logic in here,
+ # just give a rough estimate of how many there should be and
+ # be near that. This is a regression test to prevent mishaps
+ # such as https://bugs.python.org/issue37667 in the future.
+ # If you need to change the values in here during some
+ # mythical future test suite reorganization, don't go
+ # overboard with logic and keep that goal in mind.
+ self.assertGreater(rough_number_of_tests_found,
+ rough_counted_test_py_files*9//10,
+ msg='Unexpectedly low number of tests found in:\n'
+ f'{", ".join(output.splitlines())}')
+
+
class ProgramsTestCase(BaseTestCase):
"""
Test various ways to run the Python test suite. Use options close
diff --git a/Makefile.pre.in b/Makefile.pre.in
index b452289..cc428ac 100644
--- a/Makefile.pre.in
+++ b/Makefile.pre.in
@@ -247,9 +247,10 @@ TCLTK_INCLUDES= @TCLTK_INCLUDES@
TCLTK_LIBS= @TCLTK_LIBS@
# The task to run while instrumented when building the profile-opt target.
-# We exclude unittests with -x that take a rediculious amount of time to
-# run in the instrumented training build or do not provide much value.
-PROFILE_TASK=-m test.regrtest --pgo
+# To speed up profile generation, we don't run the full unit test suite
+# by default. The default is "-m test --pgo". To run more tests, use
+# PROFILE_TASK="-m test --pgo-extended"
+PROFILE_TASK= @PROFILE_TASK@
# report files for gcov / lcov coverage report
COVERAGE_INFO= $(abs_builddir)/coverage.info
diff --git a/configure.ac b/configure.ac
index c071ec3..816fc5a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1308,6 +1308,14 @@ else
DEF_MAKE_RULE="all"
fi
+AC_ARG_VAR(PROFILE_TASK, Python args for PGO generation task)
+AC_MSG_CHECKING(PROFILE_TASK)
+if test -z "$PROFILE_TASK"
+then
+ PROFILE_TASK='-m test --pgo'
+fi
+AC_MSG_RESULT($PROFILE_TASK)
+
# Make llvm-relatec checks work on systems where llvm tools are not installed with their
# normal names in the default $PATH (ie: Ubuntu). They exist under the
# non-suffixed name in their versioned llvm directory.
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