Horton

Use WaitLatch() instead of pg_usleep() at end-of-vacuum truncation

Michael Paquier <michael@paquier.xyz>

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Commit: 70685385d70f8da73ab189a72f46311091ff09be
Author: Michael Paquier <michael@paquier.xyz>
Date: 2021-07-02T03:58:34Z
Releases: 15.0 
Use WaitLatch() instead of pg_usleep() at end-of-vacuum truncation

This has the advantage to make a process more responsive when the
postmaster dies, even if the wait time was rather limited as there was
only a 50ms timeout here.  Another advantage of this change is for
monitoring, as we gain a new wait event for the end-of-vacuum
truncation.

Author: Bharath Rupireddy
Reviewed-by: Aleksander Alekseev, Thomas Munro, Michael Paquier
Discussion: https://postgr.es/m/CALj2ACU4AdPCq6NLfcA-ZGwX7pPCK5FgEj-CAU0xCKzkASSy_A@mail.gmail.com

Files

PathChange+/−
doc/src/sgml/monitoring.sgml modified +5 −0
src/backend/access/heap/vacuumlazy.c modified +5 −1
src/backend/utils/activity/wait_event.c modified +3 −0
src/include/utils/wait_event.h modified +2 −1

Documentation touched

Discussion