diff options
Diffstat (limited to 'src/backend')
| -rw-r--r-- | src/backend/utils/activity/pgstat.c | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/src/backend/utils/activity/pgstat.c b/src/backend/utils/activity/pgstat.c index ea8c5691e87..6f8d2378266 100644 --- a/src/backend/utils/activity/pgstat.c +++ b/src/backend/utils/activity/pgstat.c @@ -12,7 +12,8 @@ * Statistics are loaded from the filesystem during startup (by the startup * process), unless preceded by a crash, in which case all stats are * discarded. They are written out by the checkpointer process just before - * shutting down, except when shutting down in immediate mode. + * shutting down (if the stats kind allows it), except when shutting down in + * immediate mode. * * Fixed-numbered stats are stored in plain (non-dynamic) shared memory. * @@ -281,6 +282,7 @@ static const PgStat_KindInfo pgstat_kind_builtin_infos[PGSTAT_KIND_BUILTIN_SIZE] .name = "database", .fixed_amount = false, + .write_to_file = true, /* so pg_stat_database entries can be seen in all databases */ .accessed_across_databases = true, @@ -297,6 +299,7 @@ static const PgStat_KindInfo pgstat_kind_builtin_infos[PGSTAT_KIND_BUILTIN_SIZE] .name = "relation", .fixed_amount = false, + .write_to_file = true, .shared_size = sizeof(PgStatShared_Relation), .shared_data_off = offsetof(PgStatShared_Relation, stats), @@ -311,6 +314,7 @@ static const PgStat_KindInfo pgstat_kind_builtin_infos[PGSTAT_KIND_BUILTIN_SIZE] .name = "function", .fixed_amount = false, + .write_to_file = true, .shared_size = sizeof(PgStatShared_Function), .shared_data_off = offsetof(PgStatShared_Function, stats), @@ -324,6 +328,7 @@ static const PgStat_KindInfo pgstat_kind_builtin_infos[PGSTAT_KIND_BUILTIN_SIZE] .name = "replslot", .fixed_amount = false, + .write_to_file = true, .accessed_across_databases = true, @@ -340,6 +345,7 @@ static const PgStat_KindInfo pgstat_kind_builtin_infos[PGSTAT_KIND_BUILTIN_SIZE] .name = "subscription", .fixed_amount = false, + .write_to_file = true, /* so pg_stat_subscription_stats entries can be seen in all databases */ .accessed_across_databases = true, @@ -359,6 +365,7 @@ static const PgStat_KindInfo pgstat_kind_builtin_infos[PGSTAT_KIND_BUILTIN_SIZE] .name = "archiver", .fixed_amount = true, + .write_to_file = true, .snapshot_ctl_off = offsetof(PgStat_Snapshot, archiver), .shared_ctl_off = offsetof(PgStat_ShmemControl, archiver), @@ -374,6 +381,7 @@ static const PgStat_KindInfo pgstat_kind_builtin_infos[PGSTAT_KIND_BUILTIN_SIZE] .name = "bgwriter", .fixed_amount = true, + .write_to_file = true, .snapshot_ctl_off = offsetof(PgStat_Snapshot, bgwriter), .shared_ctl_off = offsetof(PgStat_ShmemControl, bgwriter), @@ -389,6 +397,7 @@ static const PgStat_KindInfo pgstat_kind_builtin_infos[PGSTAT_KIND_BUILTIN_SIZE] .name = "checkpointer", .fixed_amount = true, + .write_to_file = true, .snapshot_ctl_off = offsetof(PgStat_Snapshot, checkpointer), .shared_ctl_off = offsetof(PgStat_ShmemControl, checkpointer), @@ -404,6 +413,7 @@ static const PgStat_KindInfo pgstat_kind_builtin_infos[PGSTAT_KIND_BUILTIN_SIZE] .name = "io", .fixed_amount = true, + .write_to_file = true, .snapshot_ctl_off = offsetof(PgStat_Snapshot, io), .shared_ctl_off = offsetof(PgStat_ShmemControl, io), @@ -421,6 +431,7 @@ static const PgStat_KindInfo pgstat_kind_builtin_infos[PGSTAT_KIND_BUILTIN_SIZE] .name = "slru", .fixed_amount = true, + .write_to_file = true, .snapshot_ctl_off = offsetof(PgStat_Snapshot, slru), .shared_ctl_off = offsetof(PgStat_ShmemControl, slru), @@ -438,6 +449,7 @@ static const PgStat_KindInfo pgstat_kind_builtin_infos[PGSTAT_KIND_BUILTIN_SIZE] .name = "wal", .fixed_amount = true, + .write_to_file = true, .snapshot_ctl_off = offsetof(PgStat_Snapshot, wal), .shared_ctl_off = offsetof(PgStat_ShmemControl, wal), @@ -1617,6 +1629,10 @@ pgstat_write_statsfile(XLogRecPtr redo) if (pgstat_is_kind_builtin(kind)) Assert(info->snapshot_ctl_off != 0); + /* skip if no need to write to file */ + if (!info->write_to_file) + continue; + pgstat_build_snapshot_fixed(kind); if (pgstat_is_kind_builtin(kind)) ptr = ((char *) &pgStatLocal.snapshot) + info->snapshot_ctl_off; @@ -1663,6 +1679,10 @@ pgstat_write_statsfile(XLogRecPtr redo) /* if not dropped the valid-entry refcount should exist */ Assert(pg_atomic_read_u32(&ps->refcount) > 0); + /* skip if no need to write to file */ + if (!kind_info->write_to_file) + continue; + if (!kind_info->to_serialized_name) { /* normal stats entry, identified by PgStat_HashKey */ |