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-rw-r--r--src/include/catalog/catversion.h2
-rw-r--r--src/include/catalog/pg_proc.dat8
-rw-r--r--src/include/pgstat.h33
3 files changed, 40 insertions, 3 deletions
diff --git a/src/include/catalog/catversion.h b/src/include/catalog/catversion.h
index 650e1f733ed..1be01797243 100644
--- a/src/include/catalog/catversion.h
+++ b/src/include/catalog/catversion.h
@@ -53,6 +53,6 @@
*/
/* yyyymmddN */
-#define CATALOG_VERSION_NO 202009181
+#define CATALOG_VERSION_NO 202010021
#endif
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index f48f5fb4d99..d6f3e2d286b 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5481,6 +5481,14 @@
proname => 'pg_stat_get_buf_alloc', provolatile => 's', proparallel => 'r',
prorettype => 'int8', proargtypes => '', prosrc => 'pg_stat_get_buf_alloc' },
+{ oid => '1136', descr => 'statistics: information about WAL activity',
+ proname => 'pg_stat_get_wal', proisstrict => 'f', provolatile => 's',
+ proparallel => 'r', prorettype => 'record', proargtypes => '',
+ proallargtypes => '{int8,timestamptz}',
+ proargmodes => '{o,o}',
+ proargnames => '{wal_buffers_full,stats_reset}',
+ prosrc => 'pg_stat_get_wal' },
+
{ oid => '2306', descr => 'statistics: information about SLRU caches',
proname => 'pg_stat_get_slru', prorows => '100', proisstrict => 'f',
proretset => 't', provolatile => 's', proparallel => 'r',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 0dfbac46b4b..343eef507ea 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -61,6 +61,7 @@ typedef enum StatMsgType
PGSTAT_MTYPE_ANALYZE,
PGSTAT_MTYPE_ARCHIVER,
PGSTAT_MTYPE_BGWRITER,
+ PGSTAT_MTYPE_WAL,
PGSTAT_MTYPE_SLRU,
PGSTAT_MTYPE_FUNCSTAT,
PGSTAT_MTYPE_FUNCPURGE,
@@ -122,7 +123,8 @@ typedef struct PgStat_TableCounts
typedef enum PgStat_Shared_Reset_Target
{
RESET_ARCHIVER,
- RESET_BGWRITER
+ RESET_BGWRITER,
+ RESET_WAL
} PgStat_Shared_Reset_Target;
/* Possible object types for resetting single counters */
@@ -437,6 +439,16 @@ typedef struct PgStat_MsgBgWriter
} PgStat_MsgBgWriter;
/* ----------
+ * PgStat_MsgWal Sent by backends and background processes to update WAL statistics.
+ * ----------
+ */
+typedef struct PgStat_MsgWal
+{
+ PgStat_MsgHdr m_hdr;
+ PgStat_Counter m_wal_buffers_full;
+} PgStat_MsgWal;
+
+/* ----------
* PgStat_MsgSLRU Sent by a backend to update SLRU statistics.
* ----------
*/
@@ -596,6 +608,7 @@ typedef union PgStat_Msg
PgStat_MsgAnalyze msg_analyze;
PgStat_MsgArchiver msg_archiver;
PgStat_MsgBgWriter msg_bgwriter;
+ PgStat_MsgWal msg_wal;
PgStat_MsgSLRU msg_slru;
PgStat_MsgFuncstat msg_funcstat;
PgStat_MsgFuncpurge msg_funcpurge;
@@ -614,7 +627,7 @@ typedef union PgStat_Msg
* ------------------------------------------------------------
*/
-#define PGSTAT_FILE_FORMAT_ID 0x01A5BC9D
+#define PGSTAT_FILE_FORMAT_ID 0x01A5BC9E
/* ----------
* PgStat_StatDBEntry The collector's data per database
@@ -746,6 +759,15 @@ typedef struct PgStat_GlobalStats
} PgStat_GlobalStats;
/*
+ * WAL statistics kept in the stats collector
+ */
+typedef struct PgStat_WalStats
+{
+ PgStat_Counter wal_buffers_full;
+ TimestampTz stat_reset_timestamp;
+} PgStat_WalStats;
+
+/*
* SLRU statistics kept in the stats collector
*/
typedef struct PgStat_SLRUStats
@@ -1266,6 +1288,11 @@ extern char *pgstat_stat_filename;
extern PgStat_MsgBgWriter BgWriterStats;
/*
+ * WAL statistics counter is updated by backends and background processes
+ */
+extern PgStat_MsgWal WalStats;
+
+/*
* Updated by pgstat_count_buffer_*_time macros
*/
extern PgStat_Counter pgStatBlockReadTime;
@@ -1464,6 +1491,7 @@ extern void pgstat_twophase_postabort(TransactionId xid, uint16 info,
extern void pgstat_send_archiver(const char *xlog, bool failed);
extern void pgstat_send_bgwriter(void);
+extern void pgstat_send_wal(void);
/* ----------
* Support functions for the SQL-callable functions to
@@ -1478,6 +1506,7 @@ extern PgStat_StatFuncEntry *pgstat_fetch_stat_funcentry(Oid funcid);
extern int pgstat_fetch_stat_numbackends(void);
extern PgStat_ArchiverStats *pgstat_fetch_stat_archiver(void);
extern PgStat_GlobalStats *pgstat_fetch_global(void);
+extern PgStat_WalStats *pgstat_fetch_stat_wal(void);
extern PgStat_SLRUStats *pgstat_fetch_slru(void);
extern void pgstat_count_slru_page_zeroed(int slru_idx);