[asvetlov]

BaseEventLoop.__init__ queried time.get_clock_info('monotonic').resolution for every loop and stored it in the private _clock_resolution attribute, which only _run_once reads. The value is process-wide and never changes, so compute it once as asyncio.constants.CLOCK_RESOLUTION.

🤖 Generated with Claude Code

• Issue: asyncio: compute the event loop's clock resolution once, in asyncio.constants #161032

[bedevere-bot]

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot s390x RHEL9 LTO + PGO 3.x (tier-3) has failed when building commit 97ff57f.

What do you need to do:

1. Don't panic.
2. Check the buildbot page in the devguide if you don't know what the buildbots are or how they work.
3. Go to the page of the buildbot that failed (https://buildbot.python.org/#/builders/1578/builds/5937) and take a look at the build logs.
4. Check if the failure is related to this commit (97ff57f) or if it is a false positive.
5. If the failure is related to this commit, please, reflect that on the issue and make a new Pull Request with a fix.

You can take a look at the buildbot page here:

https://buildbot.python.org/#/builders/1578/builds/5937

Failed tests:

• test_profiling

Summary of the results of the build (if available):

==

Click to see traceback logs

Traceback (most recent call last):
  File "/var/lib/buildbot/worker/cstratak-rhel9-s390x/3.x.cstratak-rhel9-s390x.lto-pgo/build/Lib/profiling/sampling/cli.py", line 1387, in _handle_live_run
    process = _run_with_sync(cmd, suppress_output=True)
  File "/var/lib/buildbot/worker/cstratak-rhel9-s390x/3.x.cstratak-rhel9-s390x.lto-pgo/build/Lib/profiling/sampling/cli.py", line 302, in _run_with_sync
    _wait_for_ready_signal(sync_sock, process, _SYNC_TIMEOUT_SEC)
    ~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/var/lib/buildbot/worker/cstratak-rhel9-s390x/3.x.cstratak-rhel9-s390x.lto-pgo/build/Lib/profiling/sampling/cli.py", line 242, in _wait_for_ready_signal
    _check_process_died(process)
    ~~~~~~~~~~~~~~~~~~~^^^^^^^^^
  File "/var/lib/buildbot/worker/cstratak-rhel9-s390x/3.x.cstratak-rhel9-s390x.lto-pgo/build/Lib/profiling/sampling/cli.py", line 230, in _check_process_died
    raise RuntimeError(stderr_msg)
RuntimeError: Traceback (most recent call last):
  File "<frozen runpy>", line 201, in _run_module_as_main
  File "<frozen runpy>", line 87, in _run_code
  File "/var/lib/buildbot/worker/cstratak-rhel9-s390x/3.x.cstratak-rhel9-s390x.lto-pgo/build/Lib/profiling/sampling/_sync_coordinator.py", line 261, in <module>
    main()
    ~~~~^^
  File "/var/lib/buildbot/worker/cstratak-rhel9-s390x/3.x.cstratak-rhel9-s390x.lto-pgo/build/Lib/profiling/sampling/_sync_coordinator.py", line 254, in main
    _execute_script(script_path, script_args, cwd)
    ~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/var/lib/buildbot/worker/cstratak-rhel9-s390x/3.x.cstratak-rhel9-s390x.lto-pgo/build/Lib/profiling/sampling/_sync_coordinator.py", line 201, in _execute_script
    exec(code, main_module.__dict__)
    ~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/tmp/test_python_9psm0464/tmp48u9mqen.py", line 1, in <module>
    1/0
    ~^~
ZeroDivisionError: division by zero


Traceback (most recent call last):
  File "/var/lib/buildbot/worker/cstratak-rhel9-s390x/3.x.cstratak-rhel9-s390x.lto-pgo/build/Lib/test/test_profiling/test_sampling_profiler/test_live_collector_ui.py", line 904, in test_run_failed_script_live
    main()
    ~~~~^^
  File "/var/lib/buildbot/worker/cstratak-rhel9-s390x/3.x.cstratak-rhel9-s390x.lto-pgo/build/Lib/profiling/sampling/cli.py", line 1011, in main
    _main()
    ~~~~~^^
  File "/var/lib/buildbot/worker/cstratak-rhel9-s390x/3.x.cstratak-rhel9-s390x.lto-pgo/build/Lib/profiling/sampling/cli.py", line 1167, in _main
    handler(args)
    ~~~~~~~^^^^^^
  File "/var/lib/buildbot/worker/cstratak-rhel9-s390x/3.x.cstratak-rhel9-s390x.lto-pgo/build/Lib/profiling/sampling/cli.py", line 1274, in _handle_run
    _handle_live_run(args)
    ~~~~~~~~~~~~~~~~^^^^^^
  File "/var/lib/buildbot/worker/cstratak-rhel9-s390x/3.x.cstratak-rhel9-s390x.lto-pgo/build/Lib/profiling/sampling/cli.py", line 1410, in _handle_live_run
    sample_live(
    ~~~~~~~~~~~^
        process.pid,
        ^^^^^^^^^^^^
    ...<9 lines>...
        blocking=args.blocking,
        ^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/var/lib/buildbot/worker/cstratak-rhel9-s390x/3.x.cstratak-rhel9-s390x.lto-pgo/build/Lib/profiling/sampling/sample.py", line 616, in sample_live
    profiler = SampleProfiler(
        pid,
    ...<8 lines>...
        blocking=blocking,
    )
  File "/var/lib/buildbot/worker/cstratak-rhel9-s390x/3.x.cstratak-rhel9-s390x.lto-pgo/build/Lib/profiling/sampling/sample.py", line 89, in __init__
    raise SystemExit(err) from err
SystemExit: Failed to find the PyRuntime section in process 2795335 on Linux platform


Traceback (most recent call last):
  File "/var/lib/buildbot/worker/cstratak-rhel9-s390x/3.x.cstratak-rhel9-s390x.lto-pgo/build/Lib/profiling/sampling/sample.py", line 87, in __init__
    self.unwinder = self._new_unwinder(native, gc, opcodes, skip_non_matching_threads)
                    ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/var/lib/buildbot/worker/cstratak-rhel9-s390x/3.x.cstratak-rhel9-s390x.lto-pgo/build/Lib/profiling/sampling/sample.py", line 102, in _new_unwinder
    return _remote_debugging.RemoteUnwinder(
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
        self.pid,
        ^^^^^^^^^
    ...<7 lines>...
        **kwargs
        ^^^^^^^^
    )
    ^
RuntimeError: Failed to find the PyRuntime section in process 2795335 on Linux platform


Traceback (most recent call last):
  File "/var/lib/buildbot/worker/cstratak-rhel9-s390x/3.x.cstratak-rhel9-s390x.lto-pgo/build/Lib/test/test_profiling/test_sampling_profiler/test_live_collector_ui.py", line 904, in test_run_failed_script_live
    main()
    ~~~~^^
  File "/var/lib/buildbot/worker/cstratak-rhel9-s390x/3.x.cstratak-rhel9-s390x.lto-pgo/build/Lib/profiling/sampling/cli.py", line 1011, in main
    _main()
    ~~~~~^^
  File "/var/lib/buildbot/worker/cstratak-rhel9-s390x/3.x.cstratak-rhel9-s390x.lto-pgo/build/Lib/profiling/sampling/cli.py", line 1167, in _main
    handler(args)
    ~~~~~~~^^^^^^
  File "/var/lib/buildbot/worker/cstratak-rhel9-s390x/3.x.cstratak-rhel9-s390x.lto-pgo/build/Lib/profiling/sampling/cli.py", line 1274, in _handle_run
    _handle_live_run(args)
    ~~~~~~~~~~~~~~~~^^^^^^
  File "/var/lib/buildbot/worker/cstratak-rhel9-s390x/3.x.cstratak-rhel9-s390x.lto-pgo/build/Lib/profiling/sampling/cli.py", line 1389, in _handle_live_run
    sys.exit(f"Error: {e}")
    ~~~~~~~~^^^^^^^^^^^^^^^
SystemExit: Error: Traceback (most recent call last):
  File "<frozen runpy>", line 201, in _run_module_as_main
  File "<frozen runpy>", line 87, in _run_code
  File "/var/lib/buildbot/worker/cstratak-rhel9-s390x/3.x.cstratak-rhel9-s390x.lto-pgo/build/Lib/profiling/sampling/_sync_coordinator.py", line 261, in <module>
    main()
    ~~~~^^
  File "/var/lib/buildbot/worker/cstratak-rhel9-s390x/3.x.cstratak-rhel9-s390x.lto-pgo/build/Lib/profiling/sampling/_sync_coordinator.py", line 254, in main
    _execute_script(script_path, script_args, cwd)
    ~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/var/lib/buildbot/worker/cstratak-rhel9-s390x/3.x.cstratak-rhel9-s390x.lto-pgo/build/Lib/profiling/sampling/_sync_coordinator.py", line 201, in _execute_script
    exec(code, main_module.__dict__)
    ~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/tmp/test_python_9psm0464/tmp48u9mqen.py", line 1, in <module>
    1/0
    ~^~
ZeroDivisionError: division by zero


Traceback (most recent call last):
  File "/var/lib/buildbot/worker/cstratak-rhel9-s390x/3.x.cstratak-rhel9-s390x.lto-pgo/build/Lib/unittest/case.py", line 690, in run
    with outcome.testPartExecutor(self):
         ~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^
ResourceWarning: unclosed file <_io.BufferedReader name=7>