René's URL Explorer Experiment


Title: gh-146527: Heap-allocate gc_stats to avoid bloating PyInterpreterState by pablogsal · Pull Request #148057 · python/cpython · GitHub

Open Graph Title: gh-146527: Heap-allocate gc_stats to avoid bloating PyInterpreterState by pablogsal · Pull Request #148057 · python/cpython

X Title: gh-146527: Heap-allocate gc_stats to avoid bloating PyInterpreterState by pablogsal · Pull Request #148057 · python/cpython

Description: The gc_stats struct contains ring buffers of gc_generation_stats entries (11 young + 3×2 old on default builds). Embedding it inline in _gc_runtime_state, which is itself inline in PyInterpreterState, pushed fields like _gil.locked and threads.head to offsets beyond what out-of-process profilers and debuggers can reasonably read in a single buffer (e.g. offset 9384 for _gil.locked vs an 8 KiB read buffer). Heap-allocate generation_stats via PyMem_RawCalloc in _PyGC_Init and free it in _PyGC_Fini. This shrinks PyInterpreterState by ~1.6 KiB and keeps the GIL, thread-list, and other frequently-inspected fields at stable, low offsets. Issue: gh-146527

Open Graph Description: The gc_stats struct contains ring buffers of gc_generation_stats entries (11 young + 3×2 old on default builds). Embedding it inline in _gc_runtime_state, which is itself inline in PyInterpreterSta...

X Description: The gc_stats struct contains ring buffers of gc_generation_stats entries (11 young + 3×2 old on default builds). Embedding it inline in _gc_runtime_state, which is itself inline in PyInterpreterSta...

Opengraph URL: https://github.com/python/cpython/pull/148057

X: @github

direct link

Domain: github.com

route-pattern/:user_id/:repository/pull/:id/files(.:format)
route-controllerpull_requests
route-actionfiles
fetch-noncev2:963d2c02-65d6-c23c-5b1a-e9c92c29e9a9
current-catalog-service-hashae870bc5e265a340912cde392f23dad3671a0a881730ffdadd82f2f57d81641b
request-idACAC:1FEBBD:2008F6:2B946D:6A527235
html-safe-noncec0f278308a43656ef68e1dcd7ba3c288ac04b18f891eb6fcc47f6f50e7fffba4
visitor-payloadeyJyZWZlcnJlciI6IiIsInJlcXVlc3RfaWQiOiJBQ0FDOjFGRUJCRDoyMDA4RjY6MkI5NDZEOjZBNTI3MjM1IiwidmlzaXRvcl9pZCI6IjgwOTk0Nzk2MzM4Njk4Mjg2NjEiLCJyZWdpb25fZWRnZSI6ImlhZCIsInJlZ2lvbl9yZW5kZXIiOiJpYWQifQ==
visitor-hmaca1387db90652b771d31a1a1887c53a606e902b1d8fbb5f093df65863c0fbc15f
hovercard-subject-tagpull_request:3487596528
github-keyboard-shortcutsrepository,pull-request-list,pull-request-conversation,pull-request-files-changed,copilot
google-site-verificationApib7-x98H0j5cPqHWwSMm6dNU4GmODRoqxLiDzdx9I
octolytics-urlhttps://collector.github.com/github/collect
analytics-location///pull_requests/show/files
fb:app_id1401488693436528
apple-itunes-appapp-id=1477376905, app-argument=https://github.com/python/cpython/pull/148057/files
twitter:imagehttps://avatars.githubusercontent.com/u/11718525?s=400&v=4
twitter:cardsummary_large_image
og:imagehttps://avatars.githubusercontent.com/u/11718525?s=400&v=4
og:image:altThe gc_stats struct contains ring buffers of gc_generation_stats entries (11 young + 3×2 old on default builds). Embedding it inline in _gc_runtime_state, which is itself inline in PyInterpreterSta...
og:site_nameGitHub
og:typeobject
hostnamegithub.com
expected-hostnamegithub.com
Noneb9a586c06a05a7a86fc7e3f4dbd03e42f6869085879aa184aa6369456dbd50fb
turbo-cache-controlno-preview
diff-viewunified
go-importgithub.com/python/cpython git https://github.com/python/cpython.git
octolytics-dimension-user_id1525981
octolytics-dimension-user_loginpython
octolytics-dimension-repository_id81598961
octolytics-dimension-repository_nwopython/cpython
octolytics-dimension-repository_publictrue
octolytics-dimension-repository_is_forkfalse
octolytics-dimension-repository_network_root_id81598961
octolytics-dimension-repository_network_root_nwopython/cpython
turbo-body-classeslogged-out env-production page-responsive full-width
disable-turbotrue
browser-stats-urlhttps://api.github.com/_private/browser/stats
browser-errors-urlhttps://api.github.com/_private/browser/errors
release07a982c1d40157c619b364352b704c3ce66bb332
ui-targetfull
theme-color#1e2327
color-schemelight dark

Links:

Skip to contenthttps://github.com/python/cpython/pull/148057/files#start-of-content
https://github.com/
Sign in https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fpython%2Fcpython%2Fpull%2F148057%2Ffiles
GitHub CopilotWrite better code with AIhttps://github.com/features/copilot
GitHub Copilot appDirect agents from issue to mergehttps://github.com/features/ai/github-app
MCP RegistryNewIntegrate external toolshttps://github.com/mcp
ActionsAutomate any workflowhttps://github.com/features/actions
CodespacesInstant dev environmentshttps://github.com/features/codespaces
IssuesPlan and track workhttps://github.com/features/issues
Code ReviewManage code changeshttps://github.com/features/code-review
GitHub Advanced SecurityFind and fix vulnerabilitieshttps://github.com/security/advanced-security
Code securitySecure your code as you buildhttps://github.com/security/advanced-security/code-security
Secret protectionStop leaks before they starthttps://github.com/security/advanced-security/secret-protection
Why GitHubhttps://github.com/why-github
Documentationhttps://docs.github.com
Bloghttps://github.blog
Changeloghttps://github.blog/changelog
Marketplacehttps://github.com/marketplace
View all featureshttps://github.com/features
Enterpriseshttps://github.com/enterprise
Small and medium teamshttps://github.com/team
Startupshttps://github.com/enterprise/startups
Nonprofitshttps://github.com/solutions/industry/nonprofits
App Modernizationhttps://github.com/solutions/use-case/app-modernization
DevSecOpshttps://github.com/solutions/use-case/devsecops
DevOpshttps://github.com/solutions/use-case/devops
CI/CDhttps://github.com/solutions/use-case/ci-cd
View all use caseshttps://github.com/solutions/use-case
Healthcarehttps://github.com/solutions/industry/healthcare
Financial serviceshttps://github.com/solutions/industry/financial-services
Manufacturinghttps://github.com/solutions/industry/manufacturing
Governmenthttps://github.com/solutions/industry/government
View all industrieshttps://github.com/solutions/industry
View all solutionshttps://github.com/solutions
AIhttps://github.com/resources/articles?topic=ai
Software Developmenthttps://github.com/resources/articles?topic=software-development
DevOpshttps://github.com/resources/articles?topic=devops
Securityhttps://github.com/resources/articles?topic=security
View all topicshttps://github.com/resources/articles
Customer storieshttps://github.com/customer-stories
Events & webinarshttps://github.com/resources/events
Ebooks & reportshttps://github.com/resources/whitepapers
Business insightshttps://github.com/solutions/executive-insights
GitHub Skillshttps://skills.github.com
Documentationhttps://docs.github.com
Customer supporthttps://support.github.com
Community forumhttps://github.com/orgs/community/discussions
Trust centerhttps://github.com/trust-center
Partnershttps://github.com/partners
View all resourceshttps://github.com/resources
GitHub SponsorsFund open source developershttps://github.com/open-source/sponsors
Security Labhttps://securitylab.github.com
Maintainer Communityhttps://maintainers.github.com
Acceleratorhttps://github.com/open-source/accelerator
GitHub Starshttps://stars.github.com
Archive Programhttps://archiveprogram.github.com
Topicshttps://github.com/topics
Trendinghttps://github.com/trending
Collectionshttps://github.com/collections
Enterprise platformAI-powered developer platformhttps://github.com/enterprise
GitHub Advanced SecurityEnterprise-grade security featureshttps://github.com/security/advanced-security
Copilot for BusinessEnterprise-grade AI featureshttps://github.com/features/copilot/copilot-business
Premium SupportEnterprise-grade 24/7 supporthttps://github.com/enterprise/premium-support
Pricinghttps://github.com/pricing
Search syntax tipshttps://docs.github.com/search-github/github-code-search/understanding-github-code-search-syntax
documentationhttps://docs.github.com/search-github/github-code-search/understanding-github-code-search-syntax
Sign in https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fpython%2Fcpython%2Fpull%2F148057%2Ffiles
Sign up https://github.com/signup?ref_cta=Sign+up&ref_loc=header+logged+out&ref_page=%2F%3Cuser-name%3E%2F%3Crepo-name%3E%2Fpull_requests%2Fshow%2Ffiles&source=header-repo&source_repo=python%2Fcpython
Reloadhttps://github.com/python/cpython/pull/148057/files
Reloadhttps://github.com/python/cpython/pull/148057/files
Reloadhttps://github.com/python/cpython/pull/148057/files
Please reload this pagehttps://github.com/python/cpython/pull/148057/files
python https://github.com/python
cpythonhttps://github.com/python/cpython
Please reload this pagehttps://github.com/python/cpython/pull/148057/files
Notifications https://github.com/login?return_to=%2Fpython%2Fcpython
Fork 35k https://github.com/login?return_to=%2Fpython%2Fcpython
Star 73.8k https://github.com/login?return_to=%2Fpython%2Fcpython
Code https://github.com/python/cpython
Issues 5k+ https://github.com/python/cpython/issues
Pull requests 2.3k https://github.com/python/cpython/pulls
Actions https://github.com/python/cpython/actions
Projects https://github.com/python/cpython/projects
Security and quality 0 https://github.com/python/cpython/security
Insights https://github.com/python/cpython/pulse
Code https://github.com/python/cpython
Issues https://github.com/python/cpython/issues
Pull requests https://github.com/python/cpython/pulls
Actions https://github.com/python/cpython/actions
Projects https://github.com/python/cpython/projects
Security and quality https://github.com/python/cpython/security
Insights https://github.com/python/cpython/pulse
Sign up for GitHub https://github.com/signup?return_to=%2Fpython%2Fcpython%2Fissues%2Fnew%2Fchoose
terms of servicehttps://docs.github.com/terms
privacy statementhttps://docs.github.com/privacy
Sign inhttps://github.com/login?return_to=%2Fpython%2Fcpython%2Fissues%2Fnew%2Fchoose
pablogsalhttps://github.com/pablogsal
python:mainhttps://github.com/python/cpython/tree/main
pablogsal:gh-betterhttps://github.com/pablogsal/cpython/tree/gh-better
Conversation 1 https://github.com/python/cpython/pull/148057
Commits 1 https://github.com/python/cpython/pull/148057/commits
Checks 53 https://github.com/python/cpython/pull/148057/checks
Files changed 4 https://github.com/python/cpython/pull/148057/files
gh-146527: Heap-allocate gc_stats to avoid bloating PyInterpreterState https://github.com/python/cpython/pull/148057/files#top
Show all changes 1 commit https://github.com/python/cpython/pull/148057/files
a53bb2e gh-146527: Heap-allocate gc_stats to avoid bloating PyInterpreterState pablogsal Apr 3, 2026 https://github.com/python/cpython/pull/148057/commits/a53bb2ecd83e9fa394b17cce71e8473ec8059998
Clear filters https://github.com/python/cpython/pull/148057/files
Please reload this pagehttps://github.com/python/cpython/pull/148057/files
Please reload this pagehttps://github.com/python/cpython/pull/148057/files
pycore_interp_structs.h https://github.com/python/cpython/pull/148057/files#diff-6075b6142803c1eccc213aa150704fd639443c65311d5999f69a5ea77cb76756
gcmodule.c https://github.com/python/cpython/pull/148057/files#diff-3ba495fac5f4cc4a582187117515f3177ab91823c65a59af962fe180e06d9e77
gc.c https://github.com/python/cpython/pull/148057/files#diff-a848a0ef178aa113a092e72403da0e344f37bd141bb90a7aa65015c77bfe7385
gc_free_threading.c https://github.com/python/cpython/pull/148057/files#diff-4722ae850a2da3e12f50815c0e3932627ebe67edeaa8b7f28a94f20c8698204d
Include/internal/pycore_interp_structs.hhttps://github.com/python/cpython/pull/148057/files#diff-6075b6142803c1eccc213aa150704fd639443c65311d5999f69a5ea77cb76756
View file https://github.com/pablogsal/cpython/blob/a53bb2ecd83e9fa394b17cce71e8473ec8059998/Include/internal/pycore_interp_structs.h
Open in desktop https://desktop.github.com
https://github.co/hiddenchars
https://github.com/python/cpython/pull/148057/{{ revealButtonHref }}
https://github.com/python/cpython/pull/148057/files#diff-6075b6142803c1eccc213aa150704fd639443c65311d5999f69a5ea77cb76756
https://github.com/python/cpython/pull/148057/files#diff-6075b6142803c1eccc213aa150704fd639443c65311d5999f69a5ea77cb76756
https://github.com/python/cpython/blob/main/.github/CODEOWNERS#L480
Modules/gcmodule.chttps://github.com/python/cpython/pull/148057/files#diff-3ba495fac5f4cc4a582187117515f3177ab91823c65a59af962fe180e06d9e77
View file https://github.com/pablogsal/cpython/blob/a53bb2ecd83e9fa394b17cce71e8473ec8059998/Modules/gcmodule.c
Open in desktop https://desktop.github.com
https://github.co/hiddenchars
https://github.com/python/cpython/pull/148057/{{ revealButtonHref }}
https://github.com/python/cpython/pull/148057/files#diff-3ba495fac5f4cc4a582187117515f3177ab91823c65a59af962fe180e06d9e77
https://github.com/python/cpython/pull/148057/files#diff-3ba495fac5f4cc4a582187117515f3177ab91823c65a59af962fe180e06d9e77
Python/gc.chttps://github.com/python/cpython/pull/148057/files#diff-a848a0ef178aa113a092e72403da0e344f37bd141bb90a7aa65015c77bfe7385
View file https://github.com/pablogsal/cpython/blob/a53bb2ecd83e9fa394b17cce71e8473ec8059998/Python/gc.c
Open in desktop https://desktop.github.com
https://github.co/hiddenchars
https://github.com/python/cpython/pull/148057/{{ revealButtonHref }}
https://github.com/python/cpython/pull/148057/files#diff-a848a0ef178aa113a092e72403da0e344f37bd141bb90a7aa65015c77bfe7385
https://github.com/python/cpython/pull/148057/files#diff-a848a0ef178aa113a092e72403da0e344f37bd141bb90a7aa65015c77bfe7385
https://github.com/python/cpython/pull/148057/files#diff-a848a0ef178aa113a092e72403da0e344f37bd141bb90a7aa65015c77bfe7385
https://github.com/python/cpython/pull/148057/files#diff-a848a0ef178aa113a092e72403da0e344f37bd141bb90a7aa65015c77bfe7385
https://github.com/python/cpython/pull/148057/files#diff-a848a0ef178aa113a092e72403da0e344f37bd141bb90a7aa65015c77bfe7385
https://github.com/python/cpython/pull/148057/files#diff-a848a0ef178aa113a092e72403da0e344f37bd141bb90a7aa65015c77bfe7385
https://github.com/python/cpython/pull/148057/files#diff-a848a0ef178aa113a092e72403da0e344f37bd141bb90a7aa65015c77bfe7385
Python/gc_free_threading.chttps://github.com/python/cpython/pull/148057/files#diff-4722ae850a2da3e12f50815c0e3932627ebe67edeaa8b7f28a94f20c8698204d
View file https://github.com/pablogsal/cpython/blob/a53bb2ecd83e9fa394b17cce71e8473ec8059998/Python/gc_free_threading.c
Open in desktop https://desktop.github.com
https://github.co/hiddenchars
https://github.com/python/cpython/pull/148057/{{ revealButtonHref }}
https://github.com/python/cpython/pull/148057/files#diff-4722ae850a2da3e12f50815c0e3932627ebe67edeaa8b7f28a94f20c8698204d
https://github.com/python/cpython/pull/148057/files#diff-4722ae850a2da3e12f50815c0e3932627ebe67edeaa8b7f28a94f20c8698204d
https://github.com/python/cpython/pull/148057/files#diff-4722ae850a2da3e12f50815c0e3932627ebe67edeaa8b7f28a94f20c8698204d
https://github.com/python/cpython/pull/148057/files#diff-4722ae850a2da3e12f50815c0e3932627ebe67edeaa8b7f28a94f20c8698204d
https://github.com/python/cpython/pull/148057/files#diff-4722ae850a2da3e12f50815c0e3932627ebe67edeaa8b7f28a94f20c8698204d
https://github.com/python/cpython/pull/148057/files#diff-4722ae850a2da3e12f50815c0e3932627ebe67edeaa8b7f28a94f20c8698204d
Please reload this pagehttps://github.com/python/cpython/pull/148057/files
https://github.com
Termshttps://docs.github.com/site-policy/github-terms/github-terms-of-service
Privacyhttps://docs.github.com/site-policy/privacy-policies/github-privacy-statement
Securityhttps://github.com/security
Statushttps://www.githubstatus.com/
Communityhttps://github.community/
Docshttps://docs.github.com/
Contacthttps://support.github.com?tags=dotcom-footer

Viewport: width=device-width

URLs of crawlers that visited me.