#19276: ORM performance regression between 1.4.x and 1.5.x
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Reporter: akaariai | Owner: nobody
Type: | Status: new
Cleanup/optimization | Version: 1.5-alpha-1
Component: Database | Keywords:
layer (models, ORM) | Has patch: 1
Severity: Normal | Needs tests: 0
Triage Stage: | Easy pickings: 0
Unreviewed |
Needs documentation: 0 |
Patch needs improvement: 0 |
UI/UX: 0 |
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I did some benchmarking for performance regressions between 1.4 and 1.5
(using Python 2.6.7 and djangobench). I found that nearly every ORM
benchmark for djangobench has regressed about 10%. I made a time series of
one benchmark (query_annotate), available here:
http://users.tkk.fi/~akaariai/djbench/query_annotate.html
There are two commits which show up in the graph:
- Minor regession for: 4a103086d5c67fa4fcc53c106c9fdf644c742dd8 (unicode
literals for py3)
- A bit larger regression for: ab6cd1c839b136cbc94178da433b2e97ab7f6061
(updated dict like datastructs for py3)
It seems there is some low-hanging fruit especially for the second commit,
see here: https://github.com/akaariai/django/compare/orm_perf
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Ticket URL: <https://code.djangoproject.com/ticket/19276>
Django <https://code.djangoproject.com/>
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