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gh-118518: Minor improvements to perf docs by stratakis · Pull Request #130866 · python/cpython · GitHub

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gh-118518: Minor improvements to perf docs #130866

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pablogsal merged 1 commit into from
Mar 10, 2025
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gh-118518: Minor improvements to perf docs #130866

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6 changes: 3 additions & 3 deletions Doc/howto/perf_profiling.rst
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Expand Up @@ -162,12 +162,12 @@ the :option:`!-X` option takes precedence over the environment variable.

Example, using the environment variable::

$ PYTHONPERFSUPPORT=1 perf record -F 9999 -g -o perf.data python script.py
$ PYTHONPERFSUPPORT=1 perf record -F 9999 -g -o perf.data python my_script.py
$ perf report -g -i perf.data

Example, using the :option:`!-X` option::

$ perf record -F 9999 -g -o perf.data python -X perf script.py
$ perf record -F 9999 -g -o perf.data python -X perf my_script.py
$ perf report -g -i perf.data

Example, using the :mod:`sys` APIs in file :file:`example.py`:
Expand Down Expand Up @@ -236,7 +236,7 @@ When using the perf JIT mode, you need an extra step before you can run ``perf
report``. You need to call the ``perf inject`` command to inject the JIT
information into the ``perf.data`` file.::

$ perf record -F 9999 -g --call-graph dwarf -o perf.data python -Xperf_jit my_script.py
$ perf record -F 9999 -g -k 1 --call-graph dwarf -o perf.data python -Xperf_jit my_script.py
$ perf inject -i perf.data --jit --output perf.jit.data
$ perf report -g -i perf.jit.data

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