On Wed, Feb 19, 2025 at 4:59 PM Nathan Bossart <nathandboss...@gmail.com> wrote:
>
> On Wed, Feb 19, 2025 at 04:36:05PM -0500, Melanie Plageman wrote:
> > This makes me think I should also not cap relallfrozen when using it
> > in relation_needs_vacanalyze(). There I cap it to relallvisible and
> > relallvisible is capped to relpages. One of the ideas behind letting
> > people modify these stats in pg_class is that they can change a single
> > field to see what the effect on their system is, right?
>
> Right. Capping these values to reflect reality seems like it could make
> that more difficult.
Attache v7 doesn't cap the result for manual stats updating done with
relation_statistics_update(). I did, however, keep the cap for the
places where vacuum/analyze/create index update the stats. There the
number for relallfrozen is coming directly from visibilitymap_count(),
so it should be correct. I could perhaps add an assert instead, but I
didn't think that really made sense. An assert is meant to help the
developer and what could the developer do about the visibility map
being corrupted.
> >> Should we allow manipulating relallfrozen like we do relallvisible? My
> >> assumption is that would even be required for the ongoing statistics
> >> import/export work.
> >
> > Why would it be required for the statistics import/export work?
>
> It's probably not strictly required, but my naive expectation would be that
> we'd handle relallfrozen just like relallvisible, which appears to be
> dumped in the latest stats import/export patch. Is there any reason we
> shouldn't do the same for relallfrozen?
Nope I don't think so, but I also don't know about how people are
envisioning using a manually updated relallvisible.
- Melanie
From 26dac7d2d9768c072913c911776d4f679bb21126 Mon Sep 17 00:00:00 2001
From: Melanie Plageman <melanieplage...@gmail.com>
Date: Thu, 16 Jan 2025 16:31:55 -0500
Subject: [PATCH v7 2/2] Trigger more frequent autovacuums with relallfrozen
Calculate the insert threshold for triggering an autovacuum of a
relation based on the number of unfrozen pages. By only considering the
"active" (unfrozen) portion of the table when calculating how many
tuples to add to the insert threshold, we can trigger more frequent
vacuums of insert-heavy tables and increase the chances of vacuuming
those pages when they still reside in shared buffers.
Reviewed-by: Greg Sabino Mullane
---
doc/src/sgml/config.sgml | 16 +++++------
src/backend/postmaster/autovacuum.c | 27 ++++++++++++++++---
src/backend/utils/misc/postgresql.conf.sample | 4 +--
3 files changed, 34 insertions(+), 13 deletions(-)
diff --git a/doc/src/sgml/config.sgml b/doc/src/sgml/config.sgml
index 007746a4429..cdd477e62c3 100644
--- a/doc/src/sgml/config.sgml
+++ b/doc/src/sgml/config.sgml
@@ -8767,14 +8767,14 @@ COPY postgres_log FROM '/full/path/to/logfile.csv' WITH csv;
</term>
<listitem>
<para>
- Specifies a fraction of the table size to add to
- <varname>autovacuum_vacuum_insert_threshold</varname>
- when deciding whether to trigger a <command>VACUUM</command>.
- The default is <literal>0.2</literal> (20% of table size).
- This parameter can only be set in the <filename>postgresql.conf</filename>
- file or on the server command line;
- but the setting can be overridden for individual tables by
- changing table storage parameters.
+ Specifies a fraction of the active (unfrozen) table size to add to
+ <varname>autovacuum_vacuum_insert_threshold</varname>
+ when deciding whether to trigger a <command>VACUUM</command>.
+ The default is <literal>0.2</literal> (20% of active table size).
+ This parameter can only be set in the <filename>postgresql.conf</filename>
+ file or on the server command line;
+ but the setting can be overridden for individual tables by
+ changing table storage parameters.
</para>
</listitem>
</varlistentry>
diff --git a/src/backend/postmaster/autovacuum.c b/src/backend/postmaster/autovacuum.c
index ade2708b59e..050dbd43a22 100644
--- a/src/backend/postmaster/autovacuum.c
+++ b/src/backend/postmaster/autovacuum.c
@@ -2938,7 +2938,6 @@ relation_needs_vacanalyze(Oid relid,
{
bool force_vacuum;
bool av_enabled;
- float4 reltuples; /* pg_class.reltuples */
/* constants from reloptions or GUC variables */
int vac_base_thresh,
@@ -3052,7 +3051,11 @@ relation_needs_vacanalyze(Oid relid,
*/
if (PointerIsValid(tabentry) && AutoVacuumingActive())
{
- reltuples = classForm->reltuples;
+ float4 pcnt_unfrozen = 1;
+ float4 reltuples = classForm->reltuples;
+ int32 relpages = classForm->relpages;
+ int32 relallfrozen = classForm->relallfrozen;
+
vactuples = tabentry->dead_tuples;
instuples = tabentry->ins_since_vacuum;
anltuples = tabentry->mod_since_analyze;
@@ -3061,11 +3064,29 @@ relation_needs_vacanalyze(Oid relid,
if (reltuples < 0)
reltuples = 0;
+ /*
+ * If we have data for relallfrozen, calculate the unfrozen percentage
+ * of the table to modify insert scale factor. This helps us decide
+ * whether or not to vacuum an insert-heavy table based on the number
+ * of inserts to the "active" part of the table.
+ */
+ if (relpages > 0 && relallfrozen > 0)
+ {
+ /*
+ * It could be the stats were updated manually and relallfrozen >
+ * relpages. Clamp relallfrozen to relpages to avoid nonsensical
+ * calculations.
+ */
+ relallfrozen = Min(relallfrozen, relpages);
+ pcnt_unfrozen = 1 - ((float4) relallfrozen / relpages);
+ }
+
vacthresh = (float4) vac_base_thresh + vac_scale_factor * reltuples;
if (vac_max_thresh >= 0 && vacthresh > (float4) vac_max_thresh)
vacthresh = (float4) vac_max_thresh;
- vacinsthresh = (float4) vac_ins_base_thresh + vac_ins_scale_factor * reltuples;
+ vacinsthresh = (float4) vac_ins_base_thresh +
+ vac_ins_scale_factor * reltuples * pcnt_unfrozen;
anlthresh = (float4) anl_base_thresh + anl_scale_factor * reltuples;
/*
diff --git a/src/backend/utils/misc/postgresql.conf.sample b/src/backend/utils/misc/postgresql.conf.sample
index 5362ff80519..acf45efc4ba 100644
--- a/src/backend/utils/misc/postgresql.conf.sample
+++ b/src/backend/utils/misc/postgresql.conf.sample
@@ -675,8 +675,8 @@ autovacuum_worker_slots = 16 # autovacuum worker slots to allocate
#autovacuum_analyze_threshold = 50 # min number of row updates before
# analyze
#autovacuum_vacuum_scale_factor = 0.2 # fraction of table size before vacuum
-#autovacuum_vacuum_insert_scale_factor = 0.2 # fraction of inserts over table
- # size before insert vacuum
+#autovacuum_vacuum_insert_scale_factor = 0.2 # fraction of inserts over active
+ # table size before insert vacuum
#autovacuum_analyze_scale_factor = 0.1 # fraction of table size before analyze
#autovacuum_vacuum_max_threshold = 100000000 # max number of row updates
# before vacuum; -1 disables max
--
2.34.1
From 1437cb0669e3f2aea13ca34fab7618ecb58a8f14 Mon Sep 17 00:00:00 2001
From: Melanie Plageman <melanieplage...@gmail.com>
Date: Thu, 20 Feb 2025 19:22:55 -0500
Subject: [PATCH v7 1/2] Add relallfrozen to pg_class
Add relallfrozen, an estimate of the number of pages marked all-frozen
in the visibility map.
pg_class already has relallvisible, an estimate of the number of pages
in the relation marked all-visible in the visibility map. This is used
primarily for planning.
relallfrozen, however, is useful for estimating the outstanding number
of all-visible but not all-frozen pages in the relation for the purposes
of scheduling manual VACUUMs and tuning vacuum freeze parameters.
In the future, this field could be used to trigger more frequent vacuums
on insert-focused workloads with significant volume of frozen data.
Reviewed-by: Nathan Bossart <nathandboss...@gmail.com>
Reviewed-by: Greg Sabino Mullane <htamf...@gmail.com>
Discussion: https://postgr.es/m/flat/Z7ZUWje-e1e_fKeu%40nathan#18ec7b0a585a16a58fe317b4ec42efe0
---
doc/src/sgml/catalogs.sgml | 22 ++++++++++++++
src/backend/access/heap/vacuumlazy.c | 17 ++++++++---
src/backend/catalog/heap.c | 2 ++
src/backend/catalog/index.c | 18 ++++++++++--
src/backend/commands/analyze.c | 19 +++++++++----
src/backend/commands/cluster.c | 5 ++++
src/backend/commands/vacuum.c | 6 ++++
src/backend/statistics/relation_stats.c | 38 +++++++++++++++++++++++--
src/backend/utils/cache/relcache.c | 2 ++
src/include/catalog/pg_class.h | 3 ++
src/include/commands/vacuum.h | 1 +
11 files changed, 117 insertions(+), 16 deletions(-)
diff --git a/doc/src/sgml/catalogs.sgml b/doc/src/sgml/catalogs.sgml
index ee59a7e15d0..e371cd905f2 100644
--- a/doc/src/sgml/catalogs.sgml
+++ b/doc/src/sgml/catalogs.sgml
@@ -2066,6 +2066,28 @@ SCRAM-SHA-256$<replaceable><iteration count></replaceable>:<replaceable>&l
</para></entry>
</row>
+ <row>
+ <entry role="catalog_table_entry"><para role="column_definition">
+ <structfield>relallfrozen</structfield> <type>int4</type>
+ </para>
+ <para>
+ Number of pages that are marked all-frozen in the table's visibility
+ map. This is only an estimate used for triggering autovacuums. It is
+ updated by <link linkend="sql-vacuum"><command>VACUUM</command></link>,
+ <link linkend="sql-analyze"><command>ANALYZE</command></link>, and a few
+ DDL commands such as <link linkend="sql-createindex"><command>CREATE
+ INDEX</command></link>. Every all-frozen page must also be marked
+ all-visible in the visibility map, so internal processes will always
+ update <structfield>relallfrozen</structfield> to a value less than or
+ equal to <structfield>relallvisible</structfield>. However, if either
+ field is updated manually, it is possible for
+ <structfield>relallfrozen</structfield> to exceed
+ <structfield>relallvisible</structfield>. This will be corrected the
+ next time these estimates are updated internally.
+ </para></entry>
+ </row>
+
+
<row>
<entry role="catalog_table_entry"><para role="column_definition">
<structfield>reltoastrelid</structfield> <type>oid</type>
diff --git a/src/backend/access/heap/vacuumlazy.c b/src/backend/access/heap/vacuumlazy.c
index 1af18a78a2b..ad01d7a2150 100644
--- a/src/backend/access/heap/vacuumlazy.c
+++ b/src/backend/access/heap/vacuumlazy.c
@@ -623,7 +623,8 @@ heap_vacuum_rel(Relation rel, VacuumParams *params,
minmulti_updated;
BlockNumber orig_rel_pages,
new_rel_pages,
- new_rel_allvisible;
+ new_rel_allvisible,
+ new_rel_allfrozen;
PGRUsage ru0;
TimestampTz starttime = 0;
PgStat_Counter startreadtime = 0,
@@ -898,10 +899,17 @@ heap_vacuum_rel(Relation rel, VacuumParams *params,
* pg_class.relpages to
*/
new_rel_pages = vacrel->rel_pages; /* After possible rel truncation */
- visibilitymap_count(rel, &new_rel_allvisible, NULL);
+ visibilitymap_count(rel, &new_rel_allvisible, &new_rel_allfrozen);
if (new_rel_allvisible > new_rel_pages)
new_rel_allvisible = new_rel_pages;
+ /*
+ * An all-frozen block _must_ be all-visible. As such, clamp the count of
+ * all-frozen blocks to the count of all-visible blocks.
+ */
+ if (new_rel_allfrozen > new_rel_allvisible)
+ new_rel_allfrozen = new_rel_allvisible;
+
/*
* Now actually update rel's pg_class entry.
*
@@ -910,7 +918,8 @@ heap_vacuum_rel(Relation rel, VacuumParams *params,
* scan every page that isn't skipped using the visibility map.
*/
vac_update_relstats(rel, new_rel_pages, vacrel->new_live_tuples,
- new_rel_allvisible, vacrel->nindexes > 0,
+ new_rel_allvisible, new_rel_allfrozen,
+ vacrel->nindexes > 0,
vacrel->NewRelfrozenXid, vacrel->NewRelminMxid,
&frozenxid_updated, &minmulti_updated, false);
@@ -3720,7 +3729,7 @@ update_relstats_all_indexes(LVRelState *vacrel)
vac_update_relstats(indrel,
istat->num_pages,
istat->num_index_tuples,
- 0,
+ 0, 0,
false,
InvalidTransactionId,
InvalidMultiXactId,
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 956f196fc95..7ef6f0f1cba 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -924,6 +924,7 @@ InsertPgClassTuple(Relation pg_class_desc,
values[Anum_pg_class_relpages - 1] = Int32GetDatum(rd_rel->relpages);
values[Anum_pg_class_reltuples - 1] = Float4GetDatum(rd_rel->reltuples);
values[Anum_pg_class_relallvisible - 1] = Int32GetDatum(rd_rel->relallvisible);
+ values[Anum_pg_class_relallfrozen - 1] = Int32GetDatum(rd_rel->relallfrozen);
values[Anum_pg_class_reltoastrelid - 1] = ObjectIdGetDatum(rd_rel->reltoastrelid);
values[Anum_pg_class_relhasindex - 1] = BoolGetDatum(rd_rel->relhasindex);
values[Anum_pg_class_relisshared - 1] = BoolGetDatum(rd_rel->relisshared);
@@ -994,6 +995,7 @@ AddNewRelationTuple(Relation pg_class_desc,
new_rel_reltup->relpages = 0;
new_rel_reltup->reltuples = -1;
new_rel_reltup->relallvisible = 0;
+ new_rel_reltup->relallfrozen = 0;
/* Sequences always have a known size */
if (relkind == RELKIND_SEQUENCE)
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index cdabf780244..ac4d43fa3d3 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -2794,8 +2794,8 @@ FormIndexDatum(IndexInfo *indexInfo,
* hasindex: set relhasindex to this value
* reltuples: if >= 0, set reltuples to this value; else no change
*
- * If reltuples >= 0, relpages and relallvisible are also updated (using
- * RelationGetNumberOfBlocks() and visibilitymap_count()).
+ * If reltuples >= 0, relpages, relallvisible, and relallfrozen are also
+ * updated (using RelationGetNumberOfBlocks() and visibilitymap_count()).
*
* NOTE: an important side-effect of this operation is that an SI invalidation
* message is sent out to all backends --- including me --- causing relcache
@@ -2813,6 +2813,7 @@ index_update_stats(Relation rel,
bool update_stats;
BlockNumber relpages = 0; /* keep compiler quiet */
BlockNumber relallvisible = 0;
+ BlockNumber relallfrozen = 0;
Oid relid = RelationGetRelid(rel);
Relation pg_class;
ScanKeyData key[1];
@@ -2852,7 +2853,13 @@ index_update_stats(Relation rel,
relpages = RelationGetNumberOfBlocks(rel);
if (rel->rd_rel->relkind != RELKIND_INDEX)
- visibilitymap_count(rel, &relallvisible, NULL);
+ {
+ visibilitymap_count(rel, &relallvisible, &relallfrozen);
+
+ /* An all-frozen block must be all-visible in the VM */
+ if (relallfrozen > relallvisible)
+ relallfrozen = relallvisible;
+ }
}
/*
@@ -2925,6 +2932,11 @@ index_update_stats(Relation rel,
rd_rel->relallvisible = (int32) relallvisible;
dirty = true;
}
+ if (rd_rel->relallfrozen != (int32) relallfrozen)
+ {
+ rd_rel->relallfrozen = (int32) relallfrozen;
+ dirty = true;
+ }
}
/*
diff --git a/src/backend/commands/analyze.c b/src/backend/commands/analyze.c
index cd75954951b..9c4755a96d5 100644
--- a/src/backend/commands/analyze.c
+++ b/src/backend/commands/analyze.c
@@ -630,12 +630,18 @@ do_analyze_rel(Relation onerel, VacuumParams *params,
*/
if (!inh)
{
- BlockNumber relallvisible;
+ BlockNumber relallvisible = 0;
+ BlockNumber relallfrozen = 0;
if (RELKIND_HAS_STORAGE(onerel->rd_rel->relkind))
- visibilitymap_count(onerel, &relallvisible, NULL);
- else
- relallvisible = 0;
+ visibilitymap_count(onerel, &relallvisible, &relallfrozen);
+
+ /*
+ * An all-frozen block _must_ be all-visible. As such, clamp the count
+ * of all-frozen blocks to the count of all-visible blocks.
+ */
+ if (relallfrozen > relallvisible)
+ relallfrozen = relallvisible;
/*
* Update pg_class for table relation. CCI first, in case acquirefunc
@@ -646,6 +652,7 @@ do_analyze_rel(Relation onerel, VacuumParams *params,
relpages,
totalrows,
relallvisible,
+ relallfrozen,
hasindex,
InvalidTransactionId,
InvalidMultiXactId,
@@ -662,7 +669,7 @@ do_analyze_rel(Relation onerel, VacuumParams *params,
vac_update_relstats(Irel[ind],
RelationGetNumberOfBlocks(Irel[ind]),
totalindexrows,
- 0,
+ 0, 0,
false,
InvalidTransactionId,
InvalidMultiXactId,
@@ -678,7 +685,7 @@ do_analyze_rel(Relation onerel, VacuumParams *params,
*/
CommandCounterIncrement();
vac_update_relstats(onerel, -1, totalrows,
- 0, hasindex, InvalidTransactionId,
+ 0, 0, hasindex, InvalidTransactionId,
InvalidMultiXactId,
NULL, NULL,
in_outer_xact);
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 99193f5c886..54a08e4102e 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1226,6 +1226,7 @@ swap_relation_files(Oid r1, Oid r2, bool target_is_pg_class,
int32 swap_pages;
float4 swap_tuples;
int32 swap_allvisible;
+ int32 swap_allfrozen;
swap_pages = relform1->relpages;
relform1->relpages = relform2->relpages;
@@ -1238,6 +1239,10 @@ swap_relation_files(Oid r1, Oid r2, bool target_is_pg_class,
swap_allvisible = relform1->relallvisible;
relform1->relallvisible = relform2->relallvisible;
relform2->relallvisible = swap_allvisible;
+
+ swap_allfrozen = relform1->relallfrozen;
+ relform1->relallfrozen = relform2->relallfrozen;
+ relform2->relallfrozen = swap_allfrozen;
}
/*
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index 0239d9bae65..e81c9a8aba3 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -1427,6 +1427,7 @@ void
vac_update_relstats(Relation relation,
BlockNumber num_pages, double num_tuples,
BlockNumber num_all_visible_pages,
+ BlockNumber num_all_frozen_pages,
bool hasindex, TransactionId frozenxid,
MultiXactId minmulti,
bool *frozenxid_updated, bool *minmulti_updated,
@@ -1476,6 +1477,11 @@ vac_update_relstats(Relation relation,
pgcform->relallvisible = (int32) num_all_visible_pages;
dirty = true;
}
+ if (pgcform->relallfrozen != (int32) num_all_frozen_pages)
+ {
+ pgcform->relallfrozen = (int32) num_all_frozen_pages;
+ dirty = true;
+ }
/* Apply DDL updates, but not inside an outer transaction (see above) */
diff --git a/src/backend/statistics/relation_stats.c b/src/backend/statistics/relation_stats.c
index 046661d7c3f..e80fd52a876 100644
--- a/src/backend/statistics/relation_stats.c
+++ b/src/backend/statistics/relation_stats.c
@@ -27,6 +27,7 @@
#define DEFAULT_RELPAGES Int32GetDatum(0)
#define DEFAULT_RELTUPLES Float4GetDatum(-1.0)
#define DEFAULT_RELALLVISIBLE Int32GetDatum(0)
+#define DEFAULT_RELALLFROZEN Int32GetDatum(0)
/*
* Positional argument numbers, names, and types for
@@ -39,6 +40,7 @@ enum relation_stats_argnum
RELPAGES_ARG,
RELTUPLES_ARG,
RELALLVISIBLE_ARG,
+ RELALLFROZEN_ARG,
NUM_RELATION_STATS_ARGS
};
@@ -48,6 +50,7 @@ static struct StatsArgInfo relarginfo[] =
[RELPAGES_ARG] = {"relpages", INT4OID},
[RELTUPLES_ARG] = {"reltuples", FLOAT4OID},
[RELALLVISIBLE_ARG] = {"relallvisible", INT4OID},
+ [RELALLFROZEN_ARG] = {"relallfrozen", INT4OID},
[NUM_RELATION_STATS_ARGS] = {0}
};
@@ -67,7 +70,9 @@ relation_statistics_update(FunctionCallInfo fcinfo, int elevel, bool inplace)
float reltuples = DEFAULT_RELTUPLES;
bool update_reltuples = false;
int32 relallvisible = DEFAULT_RELALLVISIBLE;
+ int32 relallfrozen = DEFAULT_RELALLFROZEN;
bool update_relallvisible = false;
+ bool update_relallfrozen = false;
bool result = true;
if (!PG_ARGISNULL(RELPAGES_ARG))
@@ -120,6 +125,21 @@ relation_statistics_update(FunctionCallInfo fcinfo, int elevel, bool inplace)
update_relallvisible = true;
}
+ if (!PG_ARGISNULL(RELALLFROZEN_ARG))
+ {
+ relallfrozen = PG_GETARG_INT32(RELALLFROZEN_ARG);
+
+ if (relallfrozen < 0)
+ {
+ ereport(elevel,
+ (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
+ errmsg("relallfrozen cannot be < 0")));
+ result = false;
+ }
+ else
+ update_relallfrozen = true;
+ }
+
stats_check_required_arg(fcinfo, relarginfo, RELATION_ARG);
reloid = PG_GETARG_OID(RELATION_ARG);
@@ -169,6 +189,11 @@ relation_statistics_update(FunctionCallInfo fcinfo, int elevel, bool inplace)
pgcform->relallvisible = relallvisible;
dirty = true;
}
+ if (update_relallfrozen && pgcform->relallfrozen != relallfrozen)
+ {
+ pgcform->relallfrozen = relallfrozen;
+ dirty = true;
+ }
if (dirty)
systable_inplace_update_finish(inplace_state, ctup);
@@ -182,9 +207,9 @@ relation_statistics_update(FunctionCallInfo fcinfo, int elevel, bool inplace)
TupleDesc tupdesc = RelationGetDescr(crel);
HeapTuple ctup;
Form_pg_class pgcform;
- int replaces[3] = {0};
- Datum values[3] = {0};
- bool nulls[3] = {0};
+ int replaces[4] = {0};
+ Datum values[4] = {0};
+ bool nulls[4] = {0};
int nreplaces = 0;
ctup = SearchSysCache1(RELOID, ObjectIdGetDatum(reloid));
@@ -219,6 +244,13 @@ relation_statistics_update(FunctionCallInfo fcinfo, int elevel, bool inplace)
nreplaces++;
}
+ if (update_relallfrozen && relallfrozen != pgcform->relallfrozen)
+ {
+ replaces[nreplaces] = Anum_pg_class_relallfrozen;
+ values[nreplaces] = Int32GetDatum(relallfrozen);
+ nreplaces++;
+ }
+
if (nreplaces > 0)
{
HeapTuple newtup;
diff --git a/src/backend/utils/cache/relcache.c b/src/backend/utils/cache/relcache.c
index 398114373e9..d1ae761b3f6 100644
--- a/src/backend/utils/cache/relcache.c
+++ b/src/backend/utils/cache/relcache.c
@@ -1928,6 +1928,7 @@ formrdesc(const char *relationName, Oid relationReltype,
relation->rd_rel->relpages = 0;
relation->rd_rel->reltuples = -1;
relation->rd_rel->relallvisible = 0;
+ relation->rd_rel->relallfrozen = 0;
relation->rd_rel->relkind = RELKIND_RELATION;
relation->rd_rel->relnatts = (int16) natts;
@@ -3885,6 +3886,7 @@ RelationSetNewRelfilenumber(Relation relation, char persistence)
classform->relpages = 0; /* it's empty until further notice */
classform->reltuples = -1;
classform->relallvisible = 0;
+ classform->relallfrozen = 0;
}
classform->relfrozenxid = freezeXid;
classform->relminmxid = minmulti;
diff --git a/src/include/catalog/pg_class.h b/src/include/catalog/pg_class.h
index f0d612ca487..fa96ba07bf4 100644
--- a/src/include/catalog/pg_class.h
+++ b/src/include/catalog/pg_class.h
@@ -68,6 +68,9 @@ CATALOG(pg_class,1259,RelationRelationId) BKI_BOOTSTRAP BKI_ROWTYPE_OID(83,Relat
/* # of all-visible blocks (not always up-to-date) */
int32 relallvisible BKI_DEFAULT(0);
+ /* # of all-frozen blocks (not always up-to-date) */
+ int32 relallfrozen BKI_DEFAULT(0);
+
/* OID of toast table; 0 if none */
Oid reltoastrelid BKI_DEFAULT(0) BKI_LOOKUP_OPT(pg_class);
diff --git a/src/include/commands/vacuum.h b/src/include/commands/vacuum.h
index 1571a66c6bf..baacc63f590 100644
--- a/src/include/commands/vacuum.h
+++ b/src/include/commands/vacuum.h
@@ -349,6 +349,7 @@ extern void vac_update_relstats(Relation relation,
BlockNumber num_pages,
double num_tuples,
BlockNumber num_all_visible_pages,
+ BlockNumber num_all_frozen_pages,
bool hasindex,
TransactionId frozenxid,
MultiXactId minmulti,
--
2.34.1
