For comparison of performance of bulk update using the new inbuilt Django method and the package django-bulk-update.
Basic comparison using PostgreSQL 11.5 on this example project.
In [1]: Something.objects.count()
Out[1]: 1008895
In [2]: from apps.something.test_bulk_update import *
In [3]: %time inbuilt()
CPU times: user 2min 9s, sys: 653 ms, total: 2min 10s
Wall time: 2min 24s
In [4]: %time bulk_update_package()
CPU times: user 11.2 s, sys: 41.6 ms, total: 11.3 s
Wall time: 24.2 s
PyInstrument profiling available in folder pyinstrument.