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Cache Publisher objects to speed up Sphinx #10337

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merged 6 commits into from
May 7, 2022
Merged

Cache Publisher objects to speed up Sphinx #10337

merged 6 commits into from
May 7, 2022
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AA-Turner
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@AA-Turner AA-Turner commented Apr 9, 2022 •
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I don't think this is a big enough change to justify being a "feature". It does seem to be quite a big speed-up though (at least 20% faster).

Tests with builddoc.yml show 55s on 5.x and 35s on this branch (~36% faster).

Tests on the main CI (Python 3.10, ubuntu) show 211s on 5.x and 160s on this branch (~24% faster).

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Feature or Bugfix

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tk0miya
tk0miya reviewed Apr 16, 2022
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@tk0miya tk0miya added the type:proposal a feature suggestion label Apr 16, 2022
@tk0miya tk0miya added this to the 5.0.0 milestone Apr 16, 2022
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Cache publisher for rendering documents

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CI passed.

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tk0miya
tk0miya requested changes May 2, 2022
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sphinx/registry.py Outdated
@@ -461,6 +466,41 @@ def get_envversion(self, app: "Sphinx") -> Dict[str, str]:
envversion['sphinx'] = ENV_VERSION
return envversion

def create_publisher(self, app: "Sphinx", filename: str) -> Publisher:
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I considers registry is a mere storage of components. So it should not have "features" as possible. So I'd like to move this sphinx.io back again.

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@AA-Turner AA-Turner May 2, 2022 •
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How's the current?

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Thank you for your update. I prefer the idea of create_publisher(). +1 for this.

tk0miya
tk0miya reviewed May 5, 2022
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sphinx/registry.py Outdated
@@ -461,6 +466,41 @@ def get_envversion(self, app: "Sphinx") -> Dict[str, str]:
envversion['sphinx'] = ENV_VERSION
return envversion

def create_publisher(self, app: "Sphinx", filename: str) -> Publisher:
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Thank you for your update. I prefer the idea of create_publisher(). +1 for this.

tk0miya
tk0miya approved these changes May 5, 2022
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I commented a few, but it should not prevent merging this into the 5.0 release. So I'd like to merge this before feature freeze and refactor it after the beta release.

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@tk0miya I merged the function into Builder.read_doc, I think that's what you meant?

what is the merit of cloning?

I added a longer comment -- Docutils' publisher reuses the settings object, but in Builder.write_doctree we edit it for pickleability. I want to update Docutils to allow more of the behaviour Sphinx has to patch to happen natively, but that will take a little time.

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CI now passing.

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tk0miya
tk0miya approved these changes May 7, 2022
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LGTM with nits.

sphinx/builders/__init__.py
# The settings object is reused by the Publisher for each document.
# Becuase we modify the settings object in ``write_doctree``, we
# need to ensure that each doctree has an independent copy.
doctree.settings = doctree.settings.copy()
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Thank you for updating comment. I understand what you're going. I think it's much better to move this into write_doctree().

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tk0miya commented May 7, 2022

Thank you for your work. This must be the best improvement in 5.0!

@tk0miya tk0miya merged commit 431caac into sphinx-doc:5.x May 7, 2022
tk0miya added a commit that referenced this pull request May 7, 2022
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Update CHANGES for PR #10337
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@tk0miya tk0miya mentioned this pull request May 7, 2022
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@AA-Turner AA-Turner deleted the reuse-publisher branch May 30, 2022 04:15
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