ZenUnitDevOpsPython: Run flake8 with core count - 3 instead of core count to work around a bug in Python multiprocessing on 64-core machines

Author: NeilJustice

ZenUnitDevOpsPython/Python.py

@@ -14,7 +14,7 @@ def pylint_file(pythonFilePath: str) -> int:
 
 def run_flake8() -> None:
    cpuCount = multiprocessing.cpu_count()
-   flake8Command = f'flake8 -j {cpuCount} --config=.flake8 --show-source --benchmark'
+   flake8Command = f'flake8 -j {cpuCount - 3} --config=.flake8 --show-source --benchmark'
    Process.fail_fast_run(flake8Command)
 
 def run_mypy() -> None:

ZenUnitDevOpsPythonTests/PythonTests.py

@@ -40,7 +40,7 @@ def test_run_flake8_RunsFlake8WithFlake8Config(_1, _2):
       #
       Python.run_flake8()
       #
-      expectedFlake8Command = f'flake8 -j {cpuCount} --config=.flake8 --show-source --benchmark'
+      expectedFlake8Command = f'flake8 -j {cpuCount - 3} --config=.flake8 --show-source --benchmark'
       Process.fail_fast_run.assert_called_once_with(expectedFlake8Command)
 
    @staticmethod

ZenUnitDevOpsPythonTests/ZenUnitDevOpsPythonTests.pyproj

@@ -6,7 +6,7 @@
     <ProjectGuid>5be2bd06-b3d6-4e12-9d37-cb82aa0ef9d3</ProjectGuid>
     <ProjectHome>
     </ProjectHome>
-    <StartupFile>PythonTests.py</StartupFile>
+    <StartupFile>RunAll.py</StartupFile>
     <SearchPath>..\</SearchPath>
     <WorkingDirectory>..</WorkingDirectory>
     <OutputPath>.</OutputPath>