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| author | Masahiko Sawada <msawada@postgresql.org> | 2025-10-08 10:05:04 -0700 |
|---|---|---|
| committer | Masahiko Sawada <msawada@postgresql.org> | 2025-10-08 10:05:04 -0700 |
| commit | d3b6183dd988928dd369b4b7d641917e77f1ae4e (patch) | |
| tree | 021b43628b3e43871984121ba75c4a41b8992720 /src/backend/utils/adt/pgstatfuncs.c | |
| parent | 14ad0d7bf2b8d5f26061df7cbdf18cfffcdcb225 (diff) | |
Add mem_exceeded_count column to pg_stat_replication_slots.
This commit introduces a new column mem_exceeded_count to the
pg_stat_replication_slots view. This counter tracks how often the
memory used by logical decoding exceeds the logical_decoding_work_mem
limit. The new statistic helps users determine whether exceeding the
logical_decoding_work_mem limit is a rare occurrences or a frequent
issue, information that wasn't available through existing statistics.
Bumps catversion.
Author: Bertrand Drouvot <bertranddrouvot.pg@gmail.com>
Reviewed-by: Masahiko Sawada <sawada.mshk@gmail.com>
Reviewed-by: Amit Kapila <amit.kapila16@gmail.com>
Reviewed-by: shveta malik <shveta.malik@gmail.com>
Reviewed-by: Ashutosh Bapat <ashutosh.bapat.oss@gmail.com>
Reviewed-by: Chao Li <li.evan.chao@gmail.com>
Discussion: https://postgr.es/m/978D21E8-9D3B-40EA-A4B1-F87BABE7868C@yesql.se
Diffstat (limited to 'src/backend/utils/adt/pgstatfuncs.c')
| -rw-r--r-- | src/backend/utils/adt/pgstatfuncs.c | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c index 3802a4cb888..1fe33df2756 100644 --- a/src/backend/utils/adt/pgstatfuncs.c +++ b/src/backend/utils/adt/pgstatfuncs.c @@ -2121,7 +2121,7 @@ pg_stat_get_archiver(PG_FUNCTION_ARGS) Datum pg_stat_get_replication_slot(PG_FUNCTION_ARGS) { -#define PG_STAT_GET_REPLICATION_SLOT_COLS 10 +#define PG_STAT_GET_REPLICATION_SLOT_COLS 11 text *slotname_text = PG_GETARG_TEXT_P(0); NameData slotname; TupleDesc tupdesc; @@ -2146,11 +2146,13 @@ pg_stat_get_replication_slot(PG_FUNCTION_ARGS) INT8OID, -1, 0); TupleDescInitEntry(tupdesc, (AttrNumber) 7, "stream_bytes", INT8OID, -1, 0); - TupleDescInitEntry(tupdesc, (AttrNumber) 8, "total_txns", + TupleDescInitEntry(tupdesc, (AttrNumber) 8, "mem_exceeded_count", INT8OID, -1, 0); - TupleDescInitEntry(tupdesc, (AttrNumber) 9, "total_bytes", + TupleDescInitEntry(tupdesc, (AttrNumber) 9, "total_txns", INT8OID, -1, 0); - TupleDescInitEntry(tupdesc, (AttrNumber) 10, "stats_reset", + TupleDescInitEntry(tupdesc, (AttrNumber) 10, "total_bytes", + INT8OID, -1, 0); + TupleDescInitEntry(tupdesc, (AttrNumber) 11, "stats_reset", TIMESTAMPTZOID, -1, 0); BlessTupleDesc(tupdesc); @@ -2173,13 +2175,14 @@ pg_stat_get_replication_slot(PG_FUNCTION_ARGS) values[4] = Int64GetDatum(slotent->stream_txns); values[5] = Int64GetDatum(slotent->stream_count); values[6] = Int64GetDatum(slotent->stream_bytes); - values[7] = Int64GetDatum(slotent->total_txns); - values[8] = Int64GetDatum(slotent->total_bytes); + values[7] = Int64GetDatum(slotent->mem_exceeded_count); + values[8] = Int64GetDatum(slotent->total_txns); + values[9] = Int64GetDatum(slotent->total_bytes); if (slotent->stat_reset_timestamp == 0) - nulls[9] = true; + nulls[10] = true; else - values[9] = TimestampTzGetDatum(slotent->stat_reset_timestamp); + values[10] = TimestampTzGetDatum(slotent->stat_reset_timestamp); /* Returns the record as Datum */ PG_RETURN_DATUM(HeapTupleGetDatum(heap_form_tuple(tupdesc, values, nulls))); |