Sourced from psutil's changelog.

6.1.0

2024-10-17

Enhancements

• 2366_, [Windows]: drastically speedup process_iter(). We now determine process unique identity by using process "fast" create time method. This will considerably speedup those apps which use process_iter() only once, e.g. to look for a process with a certain name.
• 2446_: use pytest instead of unittest.
• 2448_: add make install-sysdeps target to install the necessary system dependencies (python-dev, gcc, etc.) on all supported UNIX flavors.
• 2449_: add make install-pydeps-test and make install-pydeps-dev targets. They can be used to install dependencies meant for running tests and for local development. They can also be installed via pip install .[test] and pip install .[dev].
• 2456_: allow to run tests via python3 -m psutil.tests even if pytest module is not installed. This is useful for production environments that don't have pytest installed, but still want to be able to test psutil installation.

Bug fixes

• 2427_: psutil (segfault) on import in the free-threaded (no GIL) version of Python 3.13. (patch by Sam Gross)
• 2455_, [Linux]: IndexError may occur when reading /proc/pid/stat and field 40 (blkio_ticks) is missing.
• 2457_, [AIX]: significantly improve the speed of Process.open_files()_ for some edge cases.
• 2460_, [OpenBSD]: Process.num_fds()_ and Process.open_files()_ may fail with NoSuchProcess_ for PID 0. Instead, we now return "null" values (0 and [] respectively).

6.0.0

2024-06-18

Enhancements

• 2109_: maxfile and maxpath fields were removed from the namedtuple returned by disk_partitions()_. Reason: on network filesystems (NFS) this can potentially take a very long time to complete.
• 2366_, [Windows]: log debug message when using slower process APIs.
• 2375_, [macOS]: provide arm64 wheels. (patch by Matthieu Darbois)
• 2396_: process_iter()_ no longer pre-emptively checks whether PIDs have been reused. This makes process_iter()_ around 20x times faster.
• 2396_: a new psutil.process_iter.cache_clear() API can be used the clear

... (truncated)

• fb68f9f pre release
• 567438c [Windows] speed up process_iter() (#2444)
• b1a7593 Use pytest.skip instead of unittest.SkipTest (#2461)
• b19d5bd AIX: improve open_files() regexp speed (#2457)
• 223938f Use @pytest.mark.skipif decorator instead of @unittest.skipIf (#2459)
• f65fe44 [OpenBSD] Process num_fds() and open_files() may raise NSP for PID 0 (#2460)
• 0a71d0e enable ruff cache (faster)
• 4649a88 Run tests without pytests (#2456)
• 80af879 revert change which broke python 2 tests
• 4e85bee change call_until() signature so that it can be used with lambda
• Additional commits viewable in compare view

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