[issue38456] Reduce the time test_subprocess takes to complete.

Gregory P. Smith added the comment: fyi - handy command to get that python -m test.regrtest -v test_subprocess | ts '.%s' then process that using whatever you want to compute deltas and sort. i fed the output of that into: ``` #!/usr/bin/python3 """Parse `python -m test.regrtest -v | ts '.

[issue38456] Reduce the time test_subprocess takes to complete.

Gregory P. Smith added the comment: the slowest tests on Linux today (with number of seconds prepended on my system that runs the suite serially in 34 seconds on a debug build): 3.01 test_check_output_stdout_arg (test.test_subprocess.ProcessTestCaseNoPoll) ... ok 3.01 test_check_output_stdo

[issue38456] Reduce the time test_subprocess takes to complete.

Gregory P. Smith added the comment: I assume the CI systems are shared and potentially noisy. It should be easier to look at some logs from slower buildbots. but sadly test_subprocess has fallen off the list of "10 slowest tests" that timing info is supplied for. concurrent.futures, multi

[issue38456] Reduce the time test_subprocess takes to complete.

STINNER Victor added the comment: Nice. Any idea of the speedup on Travis CI and/or on a specific buildbot worker? -- nosy: +vstinner ___ Python tracker ___ __

[issue38456] Reduce the time test_subprocess takes to complete.

Gregory P. Smith added the comment: New changeset 4f0587f161786318cdfa22c42459676fa42aacb6 by Gregory P. Smith in branch '3.8': [3.8] bpo-38456: Use /bin/true in test_subprocess (GH-16737) https://github.com/python/cpython/commit/4f0587f161786318cdfa22c42459676fa42aacb6 --

[issue38456] Reduce the time test_subprocess takes to complete.

Pablo Galindo Salgado added the comment: New changeset 46113e0cf32748f66cf64cd633984d143b433cd1 by Pablo Galindo in branch 'master': bpo-38456: Handle the case when there is no 'true' command (GH-16739) https://github.com/python/cpython/commit/46113e0cf32748f66cf64cd633984d143b433cd1 --

[issue38456] Reduce the time test_subprocess takes to complete.

Change by Pablo Galindo Salgado : -- pull_requests: +16318 pull_request: https://github.com/python/cpython/pull/16739 ___ Python tracker ___ ___

[issue38456] Reduce the time test_subprocess takes to complete.

Change by Gregory P. Smith : -- pull_requests: +16316 pull_request: https://github.com/python/cpython/pull/16737 ___ Python tracker ___

[issue38456] Reduce the time test_subprocess takes to complete.

Gregory P. Smith added the comment: New changeset 67b93f80c764bca01c81c989d74a99df208bea4d by Gregory P. Smith in branch 'master': bpo-38456: Use /bin/true in test_subprocess (GH-16736) https://github.com/python/cpython/commit/67b93f80c764bca01c81c989d74a99df208bea4d -- ___

[issue38456] Reduce the time test_subprocess takes to complete.

Change by Gregory P. Smith : -- keywords: +patch pull_requests: +16315 stage: -> patch review pull_request: https://github.com/python/cpython/pull/16736 ___ Python tracker ___

[issue38456] Reduce the time test_subprocess takes to complete.

New submission from Gregory P. Smith : test_subprocess is one of our long running tests, this slows down CI and buildbots. There is room for improvement in its total execution time. Use this issue as a rollup issue for any such work. we need to keep it reliable, just focus on reducing eithe