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GeezerVison is showing github.com — gh-91048: Revert the memory cache removal for remote debugging by pablogsal · Pull Request #136440 · python/cpython

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@pablogsal

@pablogsal pablogsal commented Jul 8, 2025 •
edited by bedevere-app Bot
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Some users have complained that removing the cache makes async introspection slower

  • Issue: Async Call-Stack Reconstruction #91048

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@pablogsal
pythongh-91048: Reintroduce the memory cache for remote debugging
8847d02
@pablogsal
pablogsal requested review from 1st1 and ambv as code owners July 8, 2025 23:51
@pablogsal pablogsal added the needs backport to 3.14 bugs and security fixes label Jul 8, 2025
@bedevere-app bedevere-app Bot added the awaiting core review label Jul 8, 2025
@bedevere-app bedevere-app Bot mentioned this pull request Jul 8, 2025
Async Call-Stack Reconstruction #91048
Closed
@pablogsal pablogsal added the skip news label Jul 8, 2025
@pablogsal

pablogsal commented Jul 8, 2025

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Note: this partially reverts the cache removal of #136005 so this code was in previous betas, just reverting back to it.
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@pablogsal pablogsal changed the title gh-91048: Reintroduce the memory cache for remote debugging gh-91048: Revert the memory cache removal for remote debugging Jul 8, 2025
@pablogsal

pablogsal commented Jul 8, 2025

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Confirmed the regression:

Current:

Real-time sampling stats: Mean: 4498.8Hz (222.28µs) Min: 83.1Hz (12029.75µs) Max: 5065.9Hz (197.40µs) Samples: 7503^CTraceback (most recent call last):

Before the cache removal:

Real-time sampling stats: Mean: 10835.8Hz (92.29µs) Min: 81.9Hz (12207.85µs) Max: 11610.2Hz (86.13µs) Samples: 7413
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@pablogsal
pablogsal enabled auto-merge (squash) July 8, 2025 23:55
@pablogsal
Fix crash when reading NULL name
b65bbf4
@pablogsal
pablogsal merged commit 77d25e5 into python:main Jul 9, 2025
@pablogsal
pablogsal deleted the cache branch July 9, 2025 00:31
@miss-islington-app

miss-islington-app Bot commented Jul 9, 2025

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Thanks @pablogsal for the PR 🌮🎉.. I'm working now to backport this PR to: 3.14.
🐍🍒⛏🤖
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@bedevere-app bedevere-app Bot removed the awaiting core review label Jul 9, 2025
miss-islington pushed a commit to miss-islington/cpython that referenced this pull request Jul 9, 2025
@pablogsal @miss-islington
pythongh-91048: Revert the memory cache removal for remote debugging (p…
a2d6ea0 
…ythonGH-136440)

(cherry picked from commit 77d25e5)

Co-authored-by: Pablo Galindo Salgado <[email protected]>
pythongh-91048: Reintroduce the memory cache for remote debugging
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bedevere-app Bot commented Jul 9, 2025

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GH-136443 is a backport of this pull request to the 3.14 branch.
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@bedevere-app bedevere-app Bot removed the needs backport to 3.14 bugs and security fixes label Jul 9, 2025
pablogsal added a commit that referenced this pull request Jul 9, 2025
@miss-islington @pablogsal
[3.14] gh-91048: Revert the memory cache removal for remote debugging (…
9a79c51 
…GH-136440) (#136443)

gh-91048: Revert the memory cache removal for remote debugging (GH-136440)
(cherry picked from commit 77d25e5)


gh-91048: Reintroduce the memory cache for remote debugging

Co-authored-by: Pablo Galindo Salgado <[email protected]>
@bedevere-bot

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AndPuQing pushed a commit to AndPuQing/cpython that referenced this pull request Jul 11, 2025
@pablogsal @AndPuQing
pythongh-91048: Revert the memory cache removal for remote debugging (p…
f8f0602 
…ython#136440)

pythongh-91048: Reintroduce the memory cache for remote debugging
Pranjal095 pushed a commit to Pranjal095/cpython that referenced this pull request Jul 12, 2025
@pablogsal @Pranjal095
pythongh-91048: Revert the memory cache removal for remote debugging (p…
3afd7d4 
…ython#136440)

pythongh-91048: Reintroduce the memory cache for remote debugging
picnixz pushed a commit to picnixz/cpython that referenced this pull request Jul 13, 2025
@pablogsal @picnixz
pythongh-91048: Revert the memory cache removal for remote debugging (p…
8c470ab 
…ython#136440)

pythongh-91048: Reintroduce the memory cache for remote debugging
taegyunkim pushed a commit to taegyunkim/cpython that referenced this pull request Aug 4, 2025
@pablogsal @taegyunkim
pythongh-91048: Revert the memory cache removal for remote debugging (p…
5b2e39d 
…ython#136440)

pythongh-91048: Reintroduce the memory cache for remote debugging
Agent-Hellboy pushed a commit to Agent-Hellboy/cpython that referenced this pull request Aug 19, 2025
@pablogsal @Agent-Hellboy
pythongh-91048: Revert the memory cache removal for remote debugging (p…
1a219b5 
…ython#136440)

pythongh-91048: Reintroduce the memory cache for remote debugging
kumaraditya303 pushed a commit to miss-islington/cpython that referenced this pull request Sep 9, 2025
@miss-islington @pablogsal @kumaraditya303
[3.14] pythongh-91048: Revert the memory cache removal for remote deb…
cfc1321 
…ugging (pythonGH-136440) (python#136443)

pythongh-91048: Revert the memory cache removal for remote debugging (pythonGH-136440)
(cherry picked from commit 77d25e5)


pythongh-91048: Reintroduce the memory cache for remote debugging

Co-authored-by: Pablo Galindo Salgado <[email protected]>
@maurycy maurycy mentioned this pull request May 9, 2026
_remote_debugging: reading whole pages over and over #149584
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@ambv ambv Awaiting requested review from ambv
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@pablogsal @bedevere-bot
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