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base repository: postgresql-cfbot/postgresql
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base: cf/5806~1
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head repository: postgresql-cfbot/postgresql
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compare: cf/5806
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  • 2 commits
  • 6 files changed
  • 2 contributors

Commits on Aug 10, 2025

  1. Optimize transaction waiting during logical decoding on hot standby s… 

    …ervers. On hot standby servers, XactLockTableWait falls back to polling TransactionIdIsInProgress() with fixed 1ms sleeps when transactions from the primary have no local lock table entries, causing excessive CPU usage.

Introduce a new waiting waiting path for hot-standby that uses the existing
KnownAssignedXids infrastructure combined with a condition variable to replace
the use of XactLockTableWait in standby, eliminating the polling loop.
    @alterego655
    alterego655 authored and Commitfest Bot committed Aug 10, 2025
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  2. [CF 5806] v9 - Add progressive backoff to XactLockTableWait 

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

https://commitfest.postgresql.org/patch/5806

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/CABPTF7W9CqbisVWT7DwfcnmUW7iUJXd2h9VFd20HmDBD6Ni45A@mail.gmail.com
Author(s): Xuneng Zhou
    Commitfest Bot committed Aug 10, 2025
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    1672b67 View commit details
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