database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-07-24 14:22:24 +03:00
Code Activity

Enhance checkpointer restartpoint statistics

Browse Source 
Bhis commit introduces enhancements to the pg_stat_checkpointer view by adding
three new columns: restartpoints_timed, restartpoints_req, and
restartpoints_done. These additions aim to improve the visibility and
monitoring of restartpoint processes on replicas.

Previously, it was challenging to differentiate between successful and failed
restartpoint requests. This limitation arises because restartpoints on replicas
are dependent on checkpoint records from the primary, and cannot occur more
frequently than these checkpoints.

The new columns allow for clear distinction and tracking of restartpoint
requests, their triggers, and successful completions.  This enhancement aids
database administrators and developers in better understanding and diagnosing
issues related to restartpoint behavior, particularly in scenarios where
restartpoint requests may fail.

System catalog is changed.  Catversion is bumped.

Discussion: https://postgr.es/m/99b2ccd1-a77a-962a-0837-191cdf56c2b9%40inbox.ru
Author: Anton A. Melnikov
Reviewed-by: Kyotaro Horiguchi, Alexander Korotkov
This commit is contained in:
Alexander Korotkov
2023-12-25 00:52:42 +02:00
parent 64e77b496a
commit 12915a58ee
10 changed files with 134 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
src/backend/utils/adt/pgstatfuncs.c
View File

@ -1193,6 +1193,24 @@ pg_stat_get_checkpointer_num_requested(PG_FUNCTION_ARGS)
PG_RETURN_INT64(pgstat_fetch_stat_checkpointer()->num_requested);
}
Datum
pg_stat_get_checkpointer_restartpoints_timed(PG_FUNCTION_ARGS)
{
PG_RETURN_INT64(pgstat_fetch_stat_checkpointer()->restartpoints_timed);
}
Datum
pg_stat_get_checkpointer_restartpoints_requested(PG_FUNCTION_ARGS)
{
PG_RETURN_INT64(pgstat_fetch_stat_checkpointer()->restartpoints_requested);
}
Datum
pg_stat_get_checkpointer_restartpoints_performed(PG_FUNCTION_ARGS)
{
PG_RETURN_INT64(pgstat_fetch_stat_checkpointer()->restartpoints_performed);
}
Datum
pg_stat_get_checkpointer_buffers_written(PG_FUNCTION_ARGS)
{