Add --processes parameter to automatically fork worker processes#2472

Merged

cyberw merged 22 commits intomasterfrom Add---processes-parameter-to-automatically-fork-worker-subprocesses

Nov 19, 2023

+239-12

Commits on Nov 18, 2023

Add --processes parameter: Number of times to fork the locust process, to enable using multiple CPU cores. Use -1 to launch one process per CPU core in your system. Combine with --worker flag or le…
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integration tests: ensure port 5557 is closed after each test
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test_main: Ensure port 5557 is available when starting test cases.
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test_main: Only check port availability in distributed tests, and fail faster.
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flake8. And take extra care to communicate with child processes in test cases.
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test_main: Give more time for process to finish.
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test_main: allow test_processes_ctrl_c to take a little longer...
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Add a "fast" integration test to run in parallel with the normal suite and find errors more quickly.
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fix fast_integration_test run
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make broken test fail even faster
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Show debug log in messy test case.
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dont use a subshell in tests cases if you intend to signal it...
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Correct fast_integration_test. Remove workarounds in test_processes_ctrl_c now that we found the issue.
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Rename fail-fast test stage to fail_fast_test_main.
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Add workaround for python 3.8. Probably want to remove support for that soon.
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fix the workaround for python 3.8
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