#19501: Allow for fast path model loading
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Reporter: akaariai | Owner: akaariai
Type: | Status: new
Cleanup/optimization | Version: master
Component: Database layer | Resolution:
(models, ORM) | Triage Stage: Accepted
Severity: Normal | Needs documentation: 0
Keywords: | Patch needs improvement: 1
Has patch: 0 | UI/UX: 0
Needs tests: 0 |
Easy pickings: 0 |
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Comment (by akaariai):
See PR https://github.com/django/django/pull/2802 for a basic
implementation.
The cost of this is 10% slower query_all benchmark, and around 15% slower
query_select_related benchmark (these fetch large amount of objects and do
nothing else). OTOH, using the new hook it will be possible to speed up
model loading dramatically (query_all is 1.7x faster with direct __dict__
assignment).
My feeling is that if you have a bottleneck due to model instantiation
speed, then you want this patch so that you can optimize the way your
models are loaded. If you don't have a bottleneck in model instantiation,
then you don't care about the 10% in any case.
--
Ticket URL: <https://code.djangoproject.com/ticket/19501#comment:6>
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