On Sun, Jun 08, 2025 at 10:30:45PM +0800, Xuneng Zhou wrote: > This is more problematic in logical replication scenarios where these > waits can be very long - for example, when creating a logical > replication slot on a busy system. Without a specific wait event, it's > hard to distinguish legitimate wait from other issues.
Gotcha.
> Based on suggestions from Fujii and Kevin [1], the patch introduces
> WAIT_EVENT_XACT_DONE ("Waiting for a transaction to commit or abort")
> and instructs both functions to report this event during their
> pg_usleep() calls With patch applied, when backends are waiting in
> these functions, pg_stat_activity will show what they're waiting for.
+ pgstat_report_wait_start(WAIT_EVENT_XACT_DONE);
[...]
+ pgstat_report_wait_start(WAIT_EVENT_XACT_DONE);
Wouldn't it be better to use two wait events named differently to be
able to make the difference between the two code paths?
--
Michael
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