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Move WAIT_FOR_WAL_* wait events from Client to IPC class

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WAIT_FOR_WAL_FLUSH, WAIT_FOR_WAL_REPLAY, and WAIT_FOR_WAL_WRITE were
placed in the WaitEventClient class.  But WaitEventClient is about
waiting for a socket to become readable or writable, while these events
have other delay sources as well: local fsync and local replay, which
may be disk- or CPU-bound.  WaitEventIPC is a better fit, so move them
there.

Reported-by: Noah Misch <noah@leadboat.com>
Discussion: https://postgr.es/m/20260706012642.f9.noahmisch@microsoft.com
Backpatch-through: 19
This commit is contained in:
Alexander Korotkov 2026-07-08 20:44:22 +03:00
parent a4639d64e2
commit 306d7680f0
1 changed files with 3 additions and 3 deletions
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6
src/backend/utils/activity/wait_event_names.txt
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@ -89,9 +89,6 @@ LIBPQWALRECEIVER_CONNECT "Waiting in WAL receiver to establish connection to rem
LIBPQWALRECEIVER_RECEIVE "Waiting in WAL receiver to receive data from remote server."
SSL_OPEN_SERVER "Waiting for SSL while attempting connection."
WAIT_FOR_STANDBY_CONFIRMATION "Waiting for WAL to be received and flushed by the physical standby."
WAIT_FOR_WAL_FLUSH "Waiting for WAL flush to reach a target LSN on a primary or standby."
WAIT_FOR_WAL_REPLAY "Waiting for WAL replay to reach a target LSN on a standby."
WAIT_FOR_WAL_WRITE "Waiting for WAL write to reach a target LSN on a standby."
WAL_SENDER_WAIT_FOR_WAL "Waiting for WAL to be flushed in WAL sender process."
WAL_SENDER_WRITE_DATA "Waiting for any activity when processing replies from WAL receiver in WAL sender process."
@ -162,6 +159,9 @@ REPLICATION_SLOT_DROP "Waiting for a replication slot to become inactive so it c
RESTORE_COMMAND "Waiting for <xref linkend="guc-restore-command"/> to complete."
SAFE_SNAPSHOT "Waiting to obtain a valid snapshot for a <literal>READ ONLY DEFERRABLE</literal> transaction."
SYNC_REP "Waiting for confirmation from a remote server during synchronous replication."
WAIT_FOR_WAL_FLUSH "Waiting for WAL flush to reach a target LSN on a primary or standby."
WAIT_FOR_WAL_REPLAY "Waiting for WAL replay to reach a target LSN on a standby."
WAIT_FOR_WAL_WRITE "Waiting for WAL write to reach a target LSN on a standby."
WAL_RECEIVER_EXIT "Waiting for the WAL receiver to exit."
WAL_RECEIVER_WAIT_START "Waiting for startup process to send initial data for streaming replication."
WAL_SUMMARY_READY "Waiting for a new WAL summary to be generated."