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Revert "Remove unused wait events."

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This reverts commit 671eb8f34404d24c8f16ae40e94becb38afd93bb. The removed
wait events are used by some extensions and removal of these would force a
recompile of those extensions. We don't want that for released branches.

Discussion: https://postgr.es/m/E1mdOBY-0005j2-QL@gemulon.postgresql.org
This commit is contained in:
Amit Kapila 2021-10-26 08:19:33 +05:30
parent 181361a0c2
commit a6a0ae127e
3 changed files with 33 additions and 1 deletions
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16
doc/src/sgml/monitoring.sgml
View File

@ -1549,6 +1549,22 @@ postgres 27093 0.0 0.0 30096 2752 ? Ss 11:34 0:00 postgres: ser
<entry><literal>WALWrite</literal></entry>
<entry>Waiting for a write to a WAL file.</entry>
</row>
<row>
<entry><literal>LogicalChangesRead</literal></entry>
<entry>Waiting for a read from a logical changes file.</entry>
</row>
<row>
<entry><literal>LogicalChangesWrite</literal></entry>
<entry>Waiting for a write to a logical changes file.</entry>
</row>
<row>
<entry><literal>LogicalSubxactRead</literal></entry>
<entry>Waiting for a read from a logical subxact file.</entry>
</row>
<row>
<entry><literal>LogicalSubxactWrite</literal></entry>
<entry>Waiting for a write to a logical subxact file.</entry>
</row>
</tbody>
</tgroup>
</table>

12
src/backend/utils/activity/wait_event.c
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@ -714,6 +714,18 @@ pgstat_get_wait_io(WaitEventIO w)
case WAIT_EVENT_WAL_WRITE:
event_name = "WALWrite";
break;
case WAIT_EVENT_LOGICAL_CHANGES_READ:
event_name = "LogicalChangesRead";
break;
case WAIT_EVENT_LOGICAL_CHANGES_WRITE:
event_name = "LogicalChangesWrite";
break;
case WAIT_EVENT_LOGICAL_SUBXACT_READ:
event_name = "LogicalSubxactRead";
break;
case WAIT_EVENT_LOGICAL_SUBXACT_WRITE:
event_name = "LogicalSubxactWrite";
break;
/* no default case, so that compiler will warn */
}

6
src/include/utils/wait_event.h
View File

@ -220,7 +220,11 @@ typedef enum
WAIT_EVENT_WAL_READ,
WAIT_EVENT_WAL_SYNC,
WAIT_EVENT_WAL_SYNC_METHOD_ASSIGN,
WAIT_EVENT_WAL_WRITE
WAIT_EVENT_WAL_WRITE,
WAIT_EVENT_LOGICAL_CHANGES_READ,
WAIT_EVENT_LOGICAL_CHANGES_WRITE,
WAIT_EVENT_LOGICAL_SUBXACT_READ,
WAIT_EVENT_LOGICAL_SUBXACT_WRITE
} WaitEventIO;