New submission from STINNER Victor <vstin...@python.org>:

On the slow x86 Gentoo Non-Debug with X 3.9 buildbot, test_peg_generator timed 
out after 25 min, twice.

https://buildbot.python.org/all/#/builders/51/builds/24

Either, we increase the buildbot timeouts, test_peg_parser is made faster, or 
the test is splitted into multiple test files.

This buildbot worker is slow, so it sounds like a good idea to increase 
timeouts.


0:00:00 load avg: 4.79 Run tests in parallel using 2 child processes (timeout: 
25 min, worker timeout: 30 min)
(...)
0:46:55 load avg: 6.60 [263/425/1] test_peg_generator crashed (Exit code 1) -- 
running: test_lib2to3 (5 min 20 sec)
Timeout (0:25:00)!
Thread 0xb7bcd700 (most recent call first):
  File 
"/buildbot/buildarea/cpython/3.9.ware-gentoo-x86.nondebug/build/Lib/subprocess.py",
 line 1873 in _try_wait
  File 
"/buildbot/buildarea/cpython/3.9.ware-gentoo-x86.nondebug/build/Lib/subprocess.py",
 line 1915 in _wait
  File 
"/buildbot/buildarea/cpython/3.9.ware-gentoo-x86.nondebug/build/Lib/subprocess.py",
 line 1185 in wait
  File 
"/buildbot/buildarea/cpython/3.9.ware-gentoo-x86.nondebug/build/Lib/distutils/spawn.py",
 line 76 in spawn
  File 
"/buildbot/buildarea/cpython/3.9.ware-gentoo-x86.nondebug/build/Lib/distutils/ccompiler.py",
 line 910 in spawn
  File 
"/buildbot/buildarea/cpython/3.9.ware-gentoo-x86.nondebug/build/Lib/distutils/unixccompiler.py",
 line 117 in _compile
  File 
"/buildbot/buildarea/cpython/3.9.ware-gentoo-x86.nondebug/build/Lib/distutils/ccompiler.py",
 line 574 in compile
  File 
"/buildbot/buildarea/cpython/3.9.ware-gentoo-x86.nondebug/build/Lib/distutils/command/build_ext.py",
 line 529 in build_extension
  File 
"/buildbot/buildarea/cpython/3.9.ware-gentoo-x86.nondebug/build/Lib/distutils/command/build_ext.py",
 line 474 in _build_extensions_serial
  File 
"/buildbot/buildarea/cpython/3.9.ware-gentoo-x86.nondebug/build/Lib/distutils/command/build_ext.py",
 line 449 in build_extensions
  File 
"/buildbot/buildarea/cpython/3.9.ware-gentoo-x86.nondebug/build/Lib/distutils/command/build_ext.py",
 line 340 in run
  File 
"/buildbot/buildarea/cpython/3.9.ware-gentoo-x86.nondebug/build/Tools/peg_generator/pegen/build.py",
 line 91 in compile_c_extension
  File 
"/buildbot/buildarea/cpython/3.9.ware-gentoo-x86.nondebug/build/Tools/peg_generator/pegen/testutil.py",
 line 104 in generate_parser_c_extension
  File 
"/buildbot/buildarea/cpython/3.9.ware-gentoo-x86.nondebug/build/Lib/test/test_peg_generator/test_c_parser.py",
 line 80 in build_extension
  File 
"/buildbot/buildarea/cpython/3.9.ware-gentoo-x86.nondebug/build/Lib/test/test_peg_generator/test_c_parser.py",
 line 83 in run_test
  File 
"/buildbot/buildarea/cpython/3.9.ware-gentoo-x86.nondebug/build/Lib/test/test_peg_generator/test_c_parser.py",
 line 446 in test_soft_keywords_lookahead

(...)
1:09:00 load avg: 6.25 Re-running test_peg_generator in verbose mode

(...)

10 slowest tests:
- test_tokenize: 7 min 54 sec
- test_unparse: 7 min 16 sec
- test_concurrent_futures: 6 min 44 sec
- test_lib2to3: 5 min 42 sec
- test_multiprocessing_spawn: 5 min 15 sec
- test_asyncio: 5 min 10 sec
- test_regrtest: 2 min 53 sec
- test_multiprocessing_forkserver: 2 min 38 sec
- test_unicodedata: 2 min 32 sec
- test_capi: 2 min 27 sec

1 test failed:
    test_peg_generator

(...)

test_syntax_error_for_string 
(test.test_peg_generator.test_c_parser.TestCParser) ... ok
test_ternary_operator (test.test_peg_generator.test_c_parser.TestCParser) ... ok
test_with_stmt_with_paren (test.test_peg_generator.test_c_parser.TestCParser) 
... Timeout (0:25:00)!
Thread 0xb7bec700 (most recent call first):
  File 
"/buildbot/buildarea/cpython/3.9.ware-gentoo-x86.nondebug/build/Lib/subprocess.py",
 line 1873 in _try_wait
  File 
"/buildbot/buildarea/cpython/3.9.ware-gentoo-x86.nondebug/build/Lib/subprocess.py",
 line 1915 in _wait
  File 
"/buildbot/buildarea/cpython/3.9.ware-gentoo-x86.nondebug/build/Lib/subprocess.py",
 line 1185 in wait
  File 
"/buildbot/buildarea/cpython/3.9.ware-gentoo-x86.nondebug/build/Lib/distutils/spawn.py",
 line 76 in spawn
  File 
"/buildbot/buildarea/cpython/3.9.ware-gentoo-x86.nondebug/build/Lib/distutils/ccompiler.py",
 line 910 in spawn
  File 
"/buildbot/buildarea/cpython/3.9.ware-gentoo-x86.nondebug/build/Lib/distutils/unixccompiler.py",
 line 117 in _compile
  File 
"/buildbot/buildarea/cpython/3.9.ware-gentoo-x86.nondebug/build/Lib/distutils/ccompiler.py",
 line 574 in compile
  File 
"/buildbot/buildarea/cpython/3.9.ware-gentoo-x86.nondebug/build/Lib/distutils/command/build_ext.py",
 line 529 in build_extension
  File 
"/buildbot/buildarea/cpython/3.9.ware-gentoo-x86.nondebug/build/Lib/distutils/command/build_ext.py",
 line 474 in _build_extensions_serial
  File 
"/buildbot/buildarea/cpython/3.9.ware-gentoo-x86.nondebug/build/Lib/distutils/command/build_ext.py",
 line 449 in build_extensions
  File 
"/buildbot/buildarea/cpython/3.9.ware-gentoo-x86.nondebug/build/Lib/distutils/command/build_ext.py",
 line 340 in run
  File 
"/buildbot/buildarea/cpython/3.9.ware-gentoo-x86.nondebug/build/Tools/peg_generator/pegen/build.py",
 line 91 in compile_c_extension
  File 
"/buildbot/buildarea/cpython/3.9.ware-gentoo-x86.nondebug/build/Tools/peg_generator/pegen/testutil.py",
 line 104 in generate_parser_c_extension
  File 
"/buildbot/buildarea/cpython/3.9.ware-gentoo-x86.nondebug/build/Lib/test/test_peg_generator/test_c_parser.py",
 line 80 in build_extension
  File 
"/buildbot/buildarea/cpython/3.9.ware-gentoo-x86.nondebug/build/Lib/test/test_peg_generator/test_c_parser.py",
 line 83 in run_test
  File 
"/buildbot/buildarea/cpython/3.9.ware-gentoo-x86.nondebug/build/Lib/test/test_peg_generator/test_c_parser.py",
 line 343 in test_with_stmt_with_paren
  ...

----------
components: Tests
messages: 376535
nosy: pablogsal, vstinner, zach.ware
priority: normal
severity: normal
status: open
title: test_peg_generator timed out (25 min) on x86 Gentoo Non-Debug with X 3.9
versions: Python 3.9

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<https://bugs.python.org/issue41741>
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