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gh-151929: Get boot identifier and uptime in test.pythoninfo#152127

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gh-151929: Get boot identifier and uptime in test.pythoninfo#152127
vstinner wants to merge 3 commits into
python:mainfrom
vstinner:pythoninfo_linux

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@vstinner

@vstinner vstinner commented Jun 24, 2026 •
edited by bedevere-app Bot
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@vstinner vstinner added skip news needs backport to 3.13 bugs and security fixes needs backport to 3.14 bugs and security fixes needs backport to 3.15 pre-release feature fixes, bugs and security fixes labels Jun 24, 2026
@bedevere-app bedevere-app Bot mentioned this pull request Jun 24, 2026
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@vstinner

vstinner commented Jun 24, 2026

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Example of GitHub Action CI jobs logging the 3 keys (boot_id, machine_id, uptime):

  • Cross build Linux
  • Ubuntu / build and test (ubuntu-24.04)
  • Ubuntu (free-threading) / build and test (ubuntu-24.04)
  • Ubuntu (bolt) / build and test (ubuntu-24.04)
  • Ubuntu SSL tests (ubuntu-24.04, openssl, 1.1.1w)
linux.boot_id: 610c5eb4-5030-485f-97a2-521655e5d386
linux.machine_id: 63c22c3b453d4d0a8161add8f6d2695a
linux.uptime: 0:04:22

Android (x86_64) logs boot_id and uptime:

linux.boot_id: 267bf32c-0f17-4dc3-88b4-1f3bbc5e85c2
linux.uptime: 0:01:11

linux.machine_id can be used to check if two CI jobs are running on the same machine. Examples:

  • machine_id 63c22c3b453d4d0a8161add8f6d2695a:

    • Ubuntu (free-threading) / build and test (ubuntu-24.04)
    • Ubuntu (bolt) / build and test (ubuntu-24.04)

  • machine_id b9d4e40b90bc4dcb974f6d60e5fb946e

    • Ubuntu / build and test (ubuntu-24.04)
    • Ubuntu SSL tests (ubuntu-24.04, openssl, 3.4.6)
    • Ubuntu SSL tests (ubuntu-24.04, openssl, 4.0.1)

@vstinner

vstinner commented Jun 24, 2026

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Tests / Android (x86_64) (pull_request): Failing after 19m

Oh, it got two network erros:

  FAIL: test_ftp_error (test.test_urllib2.HandlerTests.test_ftp_error)
  ----------------------------------------------------------------------
  Traceback (most recent call last):
    File "/data/user/0/org.python.testbed/files/python/lib/python3.16/urllib/request.py", line 1531, in ftp_open
      host = socket.gethostbyname(host)
  socket.gaierror: [Errno 7] No address associated with hostname
   
  During handling of the above exception, another exception occurred:
   
  Traceback (most recent call last):
    File "/data/user/0/org.python.testbed/files/python/lib/python3.16/test/test_urllib2.py", line 815, in test_ftp_error
      urlopen("ftp://www.pythontest.net/")
      ~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    File "/data/user/0/org.python.testbed/files/python/lib/python3.16/urllib/request.py", line 489, in open
      response = self._open(req, data)
    File "/data/user/0/org.python.testbed/files/python/lib/python3.16/urllib/request.py", line 506, in _open
      result = self._call_chain(self.handle_open, protocol, protocol +
                                '_open', req)
    File "/data/user/0/org.python.testbed/files/python/lib/python3.16/urllib/request.py", line 466, in _call_chain
      result = func(*args)
    File "/data/user/0/org.python.testbed/files/python/lib/python3.16/urllib/request.py", line 1533, in ftp_open
      raise URLError(msg)
  urllib.error.URLError: <urlopen error [Errno 7] No address associated with hostname>
   
  During handling of the above exception, another exception occurred:
   
  Traceback (most recent call last):
    File "/data/user/0/org.python.testbed/files/python/lib/python3.16/test/test_urllib2.py", line 817, in test_ftp_error
      self.assertEqual(raised.reason,
      ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^
                       f"ftp error: {exception.args[0]}")
                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  AssertionError: gaierror(7, 'No address associated with hostname') != 'ftp error: 500 OOPS: cannot change directory:/nonexistent'

and

  ERROR: test_getcode (test.test_urllibnet.urlopenNetworkTests.test_getcode)
  ----------------------------------------------------------------------
  Traceback (most recent call last):
    File "/data/user/0/org.python.testbed/files/python/lib/python3.16/test/test_urllibnet.py", line 107, in test_getcode
      self.assertEqual(e.exception.code, 404)
                       ^^^^^^^^^^^^^^^^
  AttributeError: 'URLError' object has no attribute 'code'

@vstinner

vstinner commented Jun 24, 2026

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Draft code to get the uptime of a Linux container:

import time
import datetime
import os

jiffies = os.sysconf("SC_CLK_TCK")

with open("/proc/1/stat") as fp:
    line = fp.readline()

line = line.rpartition(')')[-1]
parts = line.split()
start_time = int(parts[22 - 3])

seconds = start_time / jiffies
uptime = time.clock_gettime(time.CLOCK_BOOTTIME)

print(str(datetime.timedelta(seconds=uptime - seconds)))

@vstinner vstinner enabled auto-merge (squash) June 24, 2026 22:29
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