Refs #14131 -- Documented why paginating large QuerySets may be slow.
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@ -146,10 +146,12 @@ Required arguments
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clause or with a default :attr:`~django.db.models.Options.ordering` on the
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model.
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.. note::
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.. admonition:: Performance issues paginating large ``QuerySet``\s
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If you are using a ``QuerySet`` with a very large number of items,
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requesting high page numbers might be slow on some database backends.
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If you're using a ``QuerySet`` with a very large number of items,
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requesting high page numbers might be slow on some databases, because
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the resulting ``LIMIT``/``OFFSET`` query needs to count the number of
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``OFFSET`` records which takes longer as the page number gets higher.
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``per_page``
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The maximum number of items to include on a page, not including orphans
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