Description

pablogsal

opened on Jun 25, 2025

Issue body actions

Feature or enhancement

Implement a new high-frequency runtime observer that leverages the existing _remote_debugging module to collect detailed execution statistics from running Python processes. This tool enables non-intrusive observation of production applications by attaching to already-running processes without requiring any code modifications, restarts, or special startup flags. The observer can perform extremely high-frequency sampling of stack traces and interpreter state, providing detailed runtime execution analysis of live applications.

Linked PRs

• gh-135953: Implement sampling tool under profile.sample #135998
• gh-135953: Profile a module or script with sampling profiler #136777
• gh-135953: Add flamegraph reporter to sampling profiler #138304
• gh-135953: Add flamegraph reporter to sampling profiler #138715
• gh-135953: Fix refleak in cache method #138721
• gh-135953: Reduce memory usage of stack collectors #138875
• gh-135953: Prevent overflow in the profiler flamegraph hover boxes #138880
• gh-135953: Add Gecko reporter to sampling profiler #139364
• gh-135953: Add GIL contention markers to sampling profiler Gecko format #139485
• gh-135953: Simplify GC markers in the tachyon profiler #141666
• gh-135953: Refactor test_sampling_profiler into multiple files #141689
• gh-135953: Avoid BytesWarning when sampling profiler tests fail #141719
• gh-135953: Properly obtain main thread identifier in Gecko Collector #146045

Reacted by Taegyun Kim

Activity

1. pablogsal

   added

   type-featureA feature request or enhancementA feature request or enhancement

   on Jun 25, 2025
2. pablogsal commented on Jun 25, 2025

   

   pablogsal

   on Jun 25, 2025

   MemberAuthor

   More actions

   I'm working on this with @lkollar
3. picnixz

   added

   interpreter-core(Objects, Python, Grammar, and Parser dirs)(Objects, Python, Grammar, and Parser dirs)

   on Jun 27, 2025
4. pablogsal

   added a commit that references this issue on Jul 10, 2025

   gh-135953: Implement sampling tool under profile.sample (#135998)

   59acdba
5. AndPuQing

   added a commit that references this issue on Jul 11, 2025

   pythongh-135953: Implement sampling tool under profile.sample (python…

   d58d9ae
6. Pranjal095

   added a commit that references this issue on Jul 12, 2025

   pythongh-135953: Implement sampling tool under profile.sample (python…

   95427d6
7. picnixz

   added a commit that references this issue on Jul 13, 2025

   pythongh-135953: Implement sampling tool under profile.sample (python…

   e44038a
8. StanFromIreland

   added a sub-issue on Jul 19, 2025

   • One million hertz #136793
9. taegyunkim

   added a commit that references this issue on Aug 4, 2025

   pythongh-135953: Implement sampling tool under profile.sample (python…

   8368e2d
10. pablogsal

    added a commit that references this issue on Aug 11, 2025

    gh-135953: Profile a module or script with sampling profiler (#136777)

    4497ad4
11. maurycy

    added a commit that references this issue on Aug 12, 2025

    Merge branch 'main' into csv-sniffer-counter-set

    11c891d
12. Agent-Hellboy

    added 2 commits that reference this issue on Aug 19, 2025

    pythongh-135953: Implement sampling tool under profile.sample (python…

    7bf790e

    pythongh-135953: Profile a module or script with sampling profiler (p…

    5e3eba3
13. pablogsal

    added 2 commits that reference this issue on Sep 9, 2025

    gh-135953: Add flamegraph reporter to sampling profiler (#138715)

    137519a

    pythongh-135953: Fix refleak in cache method

    3ed9e9e
14. 19 remaining items
15. pablogsal

    added 5 commits that reference this issue on Nov 17, 2025

    pythongh-135953: Simplify GC markers in the tachyon profiler

    5c473cb

    gh-135953: Simplify GC markers in the tachyon profiler (#141666)

    274a26c

    pythongh-135953: Refactor test_sampling_profiler into multiple files

    7326587

    pythongh-135953: Refactor test_sampling_profiler into multiple files

    eec35ae

    gh-135953: Refactor test_sampling_profiler into multiple files (#141689)

    a52c39e
16. encukou

    added 2 commits that reference this issue on Nov 18, 2025

    pythongh-135953: Avoid BytesWarning when sampling profiler tests fail

    06a7158

    gh-135953: Avoid BytesWarning when sampling profiler tests fail (GH-1…

    e217874
17. StanFromIreland

    added 4 commits that reference this issue on Dec 6, 2025

    pythongh-135953: Add GIL contention markers to sampling profiler Geck…

    d68a2ac

    pythongh-135953: Simplify GC markers in the tachyon profiler (python#…

    c2f6778

    pythongh-135953: Refactor test_sampling_profiler into multiple files (p…

    eff5a2a

    pythongh-135953: Avoid BytesWarning when sampling profiler tests fail (…

    22ece0b
18. ashm-dev

    added a commit that references this issue on Dec 8, 2025

    pythongh-135953: Avoid BytesWarning when sampling profiler tests fail (…

    2aee349
19. pablogsal

    added a commit that references this issue on Mar 22, 2026

    gh-135953: Properly obtain main thread identifier in Gecko Collector (#…

    a17301a
20. CuriousLearner

    added a commit that references this issue on Mar 23, 2026

    Merge branch 'main' of github.com:python/cpython into fix-pythongh-13…

    3e05fa3
21. ljfp

    added a commit that references this issue on Apr 25, 2026

    pythongh-135953: Properly obtain main thread identifier in Gecko Coll…

    92090c7

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