Update ns stack with already copied ns

[sydney-runkle]

Reducing a significant amount of temporary allocations in cases with large namespaces:

this branch

📏 Total allocations:
        2973786

📦 Total memory allocated:
        4.018GB

🥇 Top 5 largest allocating locations (by size):
        - add_module_globals:/Users/programming/pydantic_work/pydantic/pydantic/_internal/_typing_extra.py:215 -> 2.028GB
        - validate_core_schema:/Users/programming/pydantic_work/pydantic/pydantic/_internal/_core_utils.py:570 -> 902.446MB
        - __init__:/Users/programming/anaconda3/envs/pydantic_env/lib/python3.10/typing.py:668 -> 349.622MB
        - create_schema_validator:/Users/programming/pydantic_work/pydantic/pydantic/plugin/_schema_validator.py:50 -> 162.853MB
        - complete_model_class:/Users/programming/pydantic_work/pydantic/pydantic/_internal/_model_construction.py:595 -> 116.021MB

main

📏 Total allocations:
        2981103

📦 Total memory allocated:
        5.032GB

🥇 Top 5 largest allocating locations (by size):
        - add_module_globals:/Users/programming/pydantic_work/pydantic/pydantic/_internal/_typing_extra.py:215 -> 2.028GB
        - push:/Users/programming/pydantic_work/pydantic/pydantic/_internal/_generate_schema.py:339 -> 1.014GB
        - validate_core_schema:/Users/programming/pydantic_work/pydantic/pydantic/_internal/_core_utils.py:570 -> 901.436MB
        - __init__:/Users/programming/anaconda3/envs/pydantic_env/lib/python3.10/typing.py:668 -> 347.622MB
        - create_schema_validator:/Users/programming/pydantic_work/pydantic/pydantic/plugin/_schema_validator.py:50 -> 164.853MB

[cloudflare-workers-and-pages]

Deploying pydantic-docs with    Cloudflare Pages

Latest commit:	164bc1d
Status:	✅  Deploy successful!
Preview URL:	https://cbe17a71.pydantic-docs.pages.dev
Branch Preview URL:	https://no-dupe-in-push.pydantic-docs.pages.dev

View logs

[codspeed-hq]

CodSpeed Performance Report

Merging #10267 will not alter performance

_{Comparing no-dupe-in-push (164bc1d) with main (3809bd5)}

Summary

✅ 34 untouched benchmarks

[github-actions]

Coverage report

Click to see where and how coverage changed

File	Statements	Missing	Coverage	Coverage (new stmts)	Lines missing
pydantic/_internal
_generate_schema.py
Project Total

This report was generated by python-coverage-comment-action