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base repository: postgresql-cfbot/postgresql
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head repository: postgresql-cfbot/postgresql
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compare: cf/5919
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  • 2 commits
  • 4 files changed
  • 2 contributors

Commits on Aug 10, 2025

  1. Eager evict bulkwrite strategy ring 

    Operations using BAS_BULKWRITE (COPY FROM and createdb) will inevitably
need to flush buffers in the strategy ring buffer in order to reuse
them. By eagerly evicting the buffers in a larger batch, we incur less
interleaving of WAL flushes and data file writes. The effect is mainly
noticeable with multiple parallel COPY FROMs. In this case, client
backends achieve higher write throughput and end up spending less time
waiting on acquiring the lock to flush WAL. Larger flush operations also
mean less time waiting for flush operations at the kernel level as well.

The heuristic for eager eviction is to only evict buffers in the
strategy ring which flushing does not require flushing WAL.
    @melanieplageman
    melanieplageman authored and Commitfest Bot committed Aug 10, 2025
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  2. [CF 5919] v1 - Eagerly evict bulkwrite strategy ring 

    This branch was automatically generated by a robot using patches from an
email thread registered at:

https://commitfest.postgresql.org/patch/5919

The branch will be overwritten each time a new patch version is posted to
the thread, and also periodically to check for bitrot caused by changes
on the master branch.

Patch(es): https://www.postgresql.org/message-id/CAAKRu_Yjn4mvN9NBxtmsCQSGwup45CoA4e05nhR7ADP-v0WCig@mail.gmail.com
Author(s): Melanie Plageman
    Commitfest Bot committed Aug 10, 2025
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