#26867: Migrate very slow
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Reporter: hugotacito | Owner: nobody
Type: Cleanup/optimization | Status: new
Component: Migrations | Version: 1.9
Severity: Normal | Keywords:
Triage Stage: Unreviewed | Has patch: 0
Easy pickings: 0 | UI/UX: 0
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When I have to run migrations between the change of modules it gets very
slow.
Example:
Applying financial.010_auto_20150819_1451... OK (24.984s)
'''(wait 5 minutes)'''
Applying fleet.00120_auto_20150819_1451... OK (17.156s)
Applying fleet.00121_auto_20150819_1451... OK (10.234s)
Applying fleet.00122_auto_20150819_1451... OK (09.352s)
Applying fleet.00123_auto_20150819_1451... OK (14.471s)
'''(wait 5 minutes)'''
Applying parking.0054_auto_20150819_1451... OK (11.604s)
'''(wait 5 minutes)'''
Applying poll.0085_auto_20150805_1413... OK (9.664s)
Applying poll.0086_auto_20150819_1451... OK (34.831s)
'''(wait 5 minutes)'''
Applying protocol.0021_auto_20150819_1451... OK (10.068s)
I think this happens because after the first migration is executed, the
'migrate' command reloads all models again for each subsequent migration,
without ignoring the migrations that was already run in previous 'migrate'
commands.
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Ticket URL: <https://code.djangoproject.com/ticket/26867>
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