#25228: Performance degradation of template rendering
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Reporter: yml | Owner: nobody
Type: Bug | Status: new
Component: Template system | Version: 1.8
Severity: Normal | Keywords:
Triage Stage: Unreviewed | Has patch: 0
Easy pickings: 0 | UI/UX: 0
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I noticed a performance regression after an upgrade from django `1.6.11`
to `1.8.3` ; the project does an extensive usage of `include` and
`extends`. I have simplified the problem into a mini django project on
github called: [https://github.com/yml/django-perfo-regression django-
perfo-regression]. This project contains 2 branches (different settings)
and 4 tests used to time various cases of template rendering:
* Standalone
* `include`
* `extends`
* `include` & `extends`
Depending on the settings there has been 2 major changes in the
performance characteristic over the releases since django 1.4.
* `1.7` doubled the rendering time with DEBUG=True for `include`
* `1.8.3` degraded the simplified production ready (`DEBUG=False` &
`cached.Loader`)
This [https://docs.google.com/spreadsheets/d/1v-cXcx8lLOF7sphtvdofU-
30GmpPCyvgn1TjIRJk4OM/edit?usp=sharing spreadsheet] contains the result I
am observing on my laptop.
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Ticket URL: <https://code.djangoproject.com/ticket/25228>
Django <https://code.djangoproject.com/>
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