[3.14] gh-142183: Cache one datachunk per tstate to prevent alloc/dealloc thrashing (GH-145789)#145828
Open
miss-islington wants to merge 2 commits intopython:3.14from
Open
[3.14] gh-142183: Cache one datachunk per tstate to prevent alloc/dealloc thrashing (GH-145789)#145828miss-islington wants to merge 2 commits intopython:3.14from
miss-islington wants to merge 2 commits intopython:3.14from
Conversation
…loc thrashing (pythonGH-145789) Cache one datachunk per tstate to prevent alloc/dealloc thrashing when repeatedly hitting the same call depth at exactly the wrong boundary. --------- (cherry picked from commit 706fd4e) Co-authored-by: T. Wouters <thomas@python.org> Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>
This was referenced Mar 11, 2026
… of the struct's layout. (The struct is only created by the runtime, and the new field only used by the runtime, so it should be safe.)
Member
|
@hugovk What do you think, is fixing a pathological performance degradation worth the risk of this change? |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Cache one datachunk per tstate to prevent alloc/dealloc thrashing when repeatedly hitting the same call depth at exactly the wrong boundary.
(cherry picked from commit 706fd4e)
Co-authored-by: T. Wouters thomas@python.org
Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>