Changes between Initial Version and Version 1 of Ticket #30842


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Timestamp:
Oct 6, 2019, 6:20:11 AM (5 years ago)
Author:
Alex Aktsipetrov
Comment:

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  • Ticket #30842 – Description

    initial v1  
    11As part of the [https://code.djangoproject.com/ticket/26226 bugfix] django started constructing N+1 querysets during a typical prefetch_related call while only 2 sql queries are executed.
    22
    3 This adds a noticeable slowdown. Attaching the flamegraph for queryset fetching 100 objects.
     3This adds a noticeable slowdown. Attaching the flamegraph for queryset fetching 100 objects, roughly 2/3 of the time are spent there.
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