Updated: Comment #0

Problem/Motivation

Tour module loads all tour config entities on every page and then filters them down to those required for that page. As these are relatively static objects they should be cached per page so subsequent views of the page don't require the full round trip again. This code existed in the original patch but was identified as 'premature optimisation' and subsequently removed.

Proposed resolution

Add back the per-page caching of tours and profile the performance improvement.

Remaining tasks

Write the patch
Add tests
Profile it
Review

User interface changes

None

API changes

None

#1744302: [meta] Resolve known performance regressions in Drupal 8

Comments

tim.plunkett’s picture

tim.plunkett
he/him
Primary language English
Location Philadelphia
commented

This would be partially mitigated by #1918768: Refactor tour module to use routes instead of paths, but still worth doing.

moshe weitzman’s picture

moshe weitzman commented

I don't think we want to casually add more caching to app. To do so, we need benchmarks to show that Drupal is slow without the patch, and fast after it. And then we need to talk about why tour entities are special and so on.

larowlan’s picture

larowlan
Location 🇦🇺🏝.au GMT+10
commented
Title: Add per-page caching of loaded tours. » Add per-page caching of filtered and rendered tours.

The loading isn't the concern, its loading them all, filtering to those relevant to the page and then rendering those. But yeah agreed profile first. Will need to simulate more tours though as we've still only got a few in core.

tim.plunkett’s picture

tim.plunkett
he/him
Primary language English
Location Philadelphia
commented
Title: Add per-page caching of filtered and rendered tours. » Add per-page caching of filtered and rendered tours
Issue tags: +needs profiling

Agreed we need profiling either way.

Tour is special because unlike other cases, we cannot use entity.query to do the filtering before loading (see the issue I liked before for why).

In most other cases, we try to pass a set of IDs to loadMultiple() first.

And yeah, also rendering.

Version: 8.0.x-dev » 8.1.x-dev

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quietone’s picture

quietone commented
Issue summary: View changes
Status: Active » Postponed

This extension is being deprecated, see #3336033: [Meta] Tasks to deprecate Tour module. It will be removed from core and moved to a contrib project, #3376099: [11.x] [Meta] Tasks to remove Tour.

This is now Postponed. The status is set according to two policies. The Remove a core extension and move it to a contributed project and the Extensions approved for removal policies.

Version: 9.5.x-dev » 11.x-dev

Drupal core is moving towards using a “main” branch. As an interim step, a new 11.x branch has been opened, as Drupal.org infrastructure cannot currently fully support a branch named main. New developments and disruptive changes should now be targeted for the 11.x branch. For more information, see the Drupal core minor version schedule and the Allowed changes during the Drupal core release cycle.

smustgrave’s picture

smustgrave commented
Project: Drupal core » Tour
Version: 11.x-dev » 1.0.x-dev
Component: tour.module » Code
Status: Postponed » Active
smustgrave’s picture

smustgrave commented
Version: 1.0.x-dev » 2.0.x-dev
smustgrave’s picture

smustgrave commented
Status: Active » Postponed (maintainer needs more info)

@larowlan would you mind looking at the tour_toolbar() for the 2.0.x branch of contrib to see if the issue you saw still exists?

smustgrave’s picture

smustgrave commented
Status: Postponed (maintainer needs more info) » Closed (outdated)

We've added a bit of caching in 2.0.x version so believe this may be outdated.

If I'm wrong please reopen.