expose platform-specific PRIO_DARWIN_* constants for core type selection on macOS in os module.
#103545
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ronaldoussoren
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ronaldoussoren
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…s`` (#104606) This adds a number of PRIO_DARWIN_* constants to the os module for use with os.setpriority. --------- Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>
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Thanks for the report. The constants will be in 3.12. The PR cannot be back ported to older releases because this changes the API of the |
carljm
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May 20, 2023
* main: (30 commits) pythongh-103987: fix several crashes in mmap module (python#103990) docs: fix wrong indentation causing rendering error in dis page (python#104661) pythongh-94906: Support multiple steps in math.nextafter (python#103881) pythongh-104472: Skip `test_subprocess.ProcessTestCase.test_empty_env` if ASAN is enabled (python#104667) pythongh-103839: Allow building Tkinter against Tcl 8.7 without external libtommath (pythonGH-103842) pythongh-85984: New additions and improvements to the tty library. (python#101832) pythongh-104659: Consolidate python examples in enum documentation (python#104665) pythongh-92248: Deprecate `type`, `choices`, `metavar` parameters of `argparse.BooleanOptionalAction` (python#103678) pythongh-104645: fix error handling in marshal tests (python#104646) pythongh-104600: Make type.__type_params__ writable (python#104634) pythongh-104602: Add additional test for listcomp with lambda (python#104639) pythongh-104640: Disallow walrus in comprehension within type scopes (python#104641) pythongh-103921: Rename "type" header in argparse docs (python#104654) Improve readability of `typing._ProtocolMeta.__instancecheck__` (python#104649) pythongh-96522: Fix deadlock in pty.spawn (python#96639) pythonGH-102818: Do not call `PyTraceBack_Here` in sys.settrace trampoline. (pythonGH-104579) pythonGH-103545: Add macOS specific constants for ``os.setpriority`` to ``os`` (python#104606) pythongh-104623: Update macOS installer to SQLite 3.42.0 (pythonGH-104624) pythongh-104619: never leak comprehension locals to outer locals() (python#104637) pythongh-104602: ensure all cellvars are known up front (python#104603) ...
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Feature or enhancement
As described in this stack overflow answer, the way to select "efficiency" vs. "performance" cores on Apple Silicon macOS machines is to use
setpriority. However, you need to use custom platform-specific constants to do this, specifically,PRIO_DARWIN_BG, and eitherPRIO_DARWIN_THREADorPRIO_DARWIN_PROCESS.Pitch
It's just a few integer constants and it would expose a pretty important bit of power-efficiency/performance-tuning functionality for Python.
Previous discussion
No previous discussion anywhere, this seems like a fairly minor addition. This platform-specific functionality seems consistent with the way these functions are already treated, given that
os.PRIO_*are already "Unix, not Emscripten, not WASI".Linked PRs
os.setprioritytoos#104606The text was updated successfully, but these errors were encountered: