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Make catalog cache hash tables resizeable.

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If the hash table backing a catalog cache becomes too full (fillfactor > 2),
enlarge it. A new buckets array, double the size of the old, is allocated,
and all entries in the old hash are moved to the right bucket in the new
hash.

This has two benefits. First, cache lookups don't get so expensive when
there are lots of entries in a cache, like if you access hundreds of
thousands of tables. Second, we can make the (initial) sizes of the caches
much smaller, which saves memory.

This patch dials down the initial sizes of the catcaches. The new sizes are
chosen so that a backend that only runs a few basic queries still won't need
to enlarge any of them.
This commit is contained in:
Heikki Linnakangas
2013-09-05 19:47:56 +03:00
parent b1892aaeaa
commit 20cb18db46
3 changed files with 102 additions and 58 deletions
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104
src/backend/utils/cache/syscache.c vendored
View File

@ -122,7 +122,7 @@ static const struct cachedesc cacheinfo[] = {
0,
0
},
32
16
},
{AccessMethodRelationId, /* AMNAME */
AmNameIndexId,
@ -177,7 +177,7 @@ static const struct cachedesc cacheinfo[] = {
Anum_pg_amproc_amprocrighttype,
Anum_pg_amproc_amprocnum
},
64
16
},
{AttributeRelationId, /* ATTNAME */
AttributeRelidNameIndexId,
@ -188,7 +188,7 @@ static const struct cachedesc cacheinfo[] = {
0,
0
},
2048
32
},
{AttributeRelationId, /* ATTNUM */
AttributeRelidNumIndexId,
@ -199,7 +199,7 @@ static const struct cachedesc cacheinfo[] = {
0,
0
},
2048
128
},
{AuthMemRelationId, /* AUTHMEMMEMROLE */
AuthMemMemRoleIndexId,
@ -210,7 +210,7 @@ static const struct cachedesc cacheinfo[] = {
0,
0
},
128
8
},
{AuthMemRelationId, /* AUTHMEMROLEMEM */
AuthMemRoleMemIndexId,
@ -221,7 +221,7 @@ static const struct cachedesc cacheinfo[] = {
0,
0
},
128
8
},
{AuthIdRelationId, /* AUTHNAME */
AuthIdRolnameIndexId,
@ -232,7 +232,7 @@ static const struct cachedesc cacheinfo[] = {
0,
0
},
128
8
},
{AuthIdRelationId, /* AUTHOID */
AuthIdOidIndexId,
@ -243,7 +243,7 @@ static const struct cachedesc cacheinfo[] = {
0,
0
},
128
8
},
{
CastRelationId, /* CASTSOURCETARGET */
@ -266,7 +266,7 @@ static const struct cachedesc cacheinfo[] = {
Anum_pg_opclass_opcnamespace,
0
},
64
8
},
{OperatorClassRelationId, /* CLAOID */
OpclassOidIndexId,
@ -277,7 +277,7 @@ static const struct cachedesc cacheinfo[] = {
0,
0
},
64
8
},
{CollationRelationId, /* COLLNAMEENCNSP */
CollationNameEncNspIndexId,
@ -288,7 +288,7 @@ static const struct cachedesc cacheinfo[] = {
Anum_pg_collation_collnamespace,
0
},
64
8
},
{CollationRelationId, /* COLLOID */
CollationOidIndexId,
@ -299,7 +299,7 @@ static const struct cachedesc cacheinfo[] = {
0,
0
},
64
8
},
{ConversionRelationId, /* CONDEFAULT */
ConversionDefaultIndexId,
@ -310,7 +310,7 @@ static const struct cachedesc cacheinfo[] = {
Anum_pg_conversion_contoencoding,
ObjectIdAttributeNumber,
},
128
8
},
{ConversionRelationId, /* CONNAMENSP */
ConversionNameNspIndexId,
@ -321,7 +321,7 @@ static const struct cachedesc cacheinfo[] = {
0,
0
},
128
8
},
{ConstraintRelationId, /* CONSTROID */
ConstraintOidIndexId,
@ -332,7 +332,7 @@ static const struct cachedesc cacheinfo[] = {
0,
0
},
1024
16
},
{ConversionRelationId, /* CONVOID */
ConversionOidIndexId,
@ -343,7 +343,7 @@ static const struct cachedesc cacheinfo[] = {
0,
0
},
128
8
},
{DatabaseRelationId, /* DATABASEOID */
DatabaseOidIndexId,
@ -365,7 +365,7 @@ static const struct cachedesc cacheinfo[] = {
Anum_pg_default_acl_defaclobjtype,
0
},
256
8
},
{EnumRelationId, /* ENUMOID */
EnumOidIndexId,
@ -376,7 +376,7 @@ static const struct cachedesc cacheinfo[] = {
0,
0
},
256
8
},
{EnumRelationId, /* ENUMTYPOIDNAME */
EnumTypIdLabelIndexId,
@ -387,7 +387,7 @@ static const struct cachedesc cacheinfo[] = {
0,
0
},
256
8
},
{EventTriggerRelationId, /* EVENTTRIGGERNAME */
EventTriggerNameIndexId,
@ -420,7 +420,7 @@ static const struct cachedesc cacheinfo[] = {
0,
0
},
8
2
},
{ForeignDataWrapperRelationId, /* FOREIGNDATAWRAPPEROID */
ForeignDataWrapperOidIndexId,
@ -431,7 +431,7 @@ static const struct cachedesc cacheinfo[] = {
0,
0
},
8
2
},
{ForeignServerRelationId, /* FOREIGNSERVERNAME */
ForeignServerNameIndexId,
@ -442,7 +442,7 @@ static const struct cachedesc cacheinfo[] = {
0,
0
},
32
2
},
{ForeignServerRelationId, /* FOREIGNSERVEROID */
ForeignServerOidIndexId,
@ -453,7 +453,7 @@ static const struct cachedesc cacheinfo[] = {
0,
0
},
32
2
},
{ForeignTableRelationId, /* FOREIGNTABLEREL */
ForeignTableRelidIndexId,
@ -464,7 +464,7 @@ static const struct cachedesc cacheinfo[] = {
0,
0
},
128
4
},
{IndexRelationId, /* INDEXRELID */
IndexRelidIndexId,
@ -475,7 +475,7 @@ static const struct cachedesc cacheinfo[] = {
0,
0
},
1024
64
},
{LanguageRelationId, /* LANGNAME */
LanguageNameIndexId,
@ -508,7 +508,7 @@ static const struct cachedesc cacheinfo[] = {
0,
0
},
256
4
},
{NamespaceRelationId, /* NAMESPACEOID */
NamespaceOidIndexId,
@ -519,7 +519,7 @@ static const struct cachedesc cacheinfo[] = {
0,
0
},
256
16
},
{OperatorRelationId, /* OPERNAMENSP */
OperatorNameNspIndexId,
@ -530,7 +530,7 @@ static const struct cachedesc cacheinfo[] = {
Anum_pg_operator_oprright,
Anum_pg_operator_oprnamespace
},
1024
256
},
{OperatorRelationId, /* OPEROID */
OperatorOidIndexId,
@ -541,7 +541,7 @@ static const struct cachedesc cacheinfo[] = {
0,
0
},
1024
32
},
{OperatorFamilyRelationId, /* OPFAMILYAMNAMENSP */
OpfamilyAmNameNspIndexId,
@ -552,7 +552,7 @@ static const struct cachedesc cacheinfo[] = {
Anum_pg_opfamily_opfnamespace,
0
},
64
8
},
{OperatorFamilyRelationId, /* OPFAMILYOID */
OpfamilyOidIndexId,
@ -563,7 +563,7 @@ static const struct cachedesc cacheinfo[] = {
0,
0
},
64
8
},
{ProcedureRelationId, /* PROCNAMEARGSNSP */
ProcedureNameArgsNspIndexId,
@ -574,7 +574,7 @@ static const struct cachedesc cacheinfo[] = {
Anum_pg_proc_pronamespace,
0
},
2048
128
},
{ProcedureRelationId, /* PROCOID */
ProcedureOidIndexId,
@ -585,7 +585,7 @@ static const struct cachedesc cacheinfo[] = {
0,
0
},
2048
128
},
{RangeRelationId, /* RANGETYPE */
RangeTypidIndexId,
@ -596,7 +596,7 @@ static const struct cachedesc cacheinfo[] = {
0,
0
},
64
4
},
{RelationRelationId, /* RELNAMENSP */
ClassNameNspIndexId,
@ -607,7 +607,7 @@ static const struct cachedesc cacheinfo[] = {
0,
0
},
1024
128
},
{RelationRelationId, /* RELOID */
ClassOidIndexId,
@ -618,7 +618,7 @@ static const struct cachedesc cacheinfo[] = {
0,
0
},
1024
128
},
{RewriteRelationId, /* RULERELNAME */
RewriteRelRulenameIndexId,
@ -629,7 +629,7 @@ static const struct cachedesc cacheinfo[] = {
0,
0
},
1024
8
},
{StatisticRelationId, /* STATRELATTINH */
StatisticRelidAttnumInhIndexId,
@ -640,7 +640,7 @@ static const struct cachedesc cacheinfo[] = {
Anum_pg_statistic_stainherit,
0
},
1024
128
},
{TableSpaceRelationId, /* TABLESPACEOID */
TablespaceOidIndexId,
@ -651,7 +651,7 @@ static const struct cachedesc cacheinfo[] = {
0,
0,
},
16
4
},
{TSConfigMapRelationId, /* TSCONFIGMAP */
TSConfigMapIndexId,
@ -662,7 +662,7 @@ static const struct cachedesc cacheinfo[] = {
Anum_pg_ts_config_map_mapseqno,
0
},
4
2
},
{TSConfigRelationId, /* TSCONFIGNAMENSP */
TSConfigNameNspIndexId,
@ -673,7 +673,7 @@ static const struct cachedesc cacheinfo[] = {
0,
0
},
16
2
},
{TSConfigRelationId, /* TSCONFIGOID */
TSConfigOidIndexId,
@ -684,7 +684,7 @@ static const struct cachedesc cacheinfo[] = {
0,
0
},
16
2
},
{TSDictionaryRelationId, /* TSDICTNAMENSP */
TSDictionaryNameNspIndexId,
@ -695,7 +695,7 @@ static const struct cachedesc cacheinfo[] = {
0,
0
},
16
2
},
{TSDictionaryRelationId, /* TSDICTOID */
TSDictionaryOidIndexId,
@ -706,7 +706,7 @@ static const struct cachedesc cacheinfo[] = {
0,
0
},
16
2
},
{TSParserRelationId, /* TSPARSERNAMENSP */
TSParserNameNspIndexId,
@ -717,7 +717,7 @@ static const struct cachedesc cacheinfo[] = {
0,
0
},
4
2
},
{TSParserRelationId, /* TSPARSEROID */
TSParserOidIndexId,
@ -728,7 +728,7 @@ static const struct cachedesc cacheinfo[] = {
0,
0
},
4
2
},
{TSTemplateRelationId, /* TSTEMPLATENAMENSP */
TSTemplateNameNspIndexId,
@ -739,7 +739,7 @@ static const struct cachedesc cacheinfo[] = {
0,
0
},
16
2
},
{TSTemplateRelationId, /* TSTEMPLATEOID */
TSTemplateOidIndexId,
@ -750,7 +750,7 @@ static const struct cachedesc cacheinfo[] = {
0,
0
},
16
2
},
{TypeRelationId, /* TYPENAMENSP */
TypeNameNspIndexId,
@ -761,7 +761,7 @@ static const struct cachedesc cacheinfo[] = {
0,
0
},
1024
64
},
{TypeRelationId, /* TYPEOID */
TypeOidIndexId,
@ -772,7 +772,7 @@ static const struct cachedesc cacheinfo[] = {
0,
0
},
1024
64
},
{UserMappingRelationId, /* USERMAPPINGOID */
UserMappingOidIndexId,
@ -783,7 +783,7 @@ static const struct cachedesc cacheinfo[] = {
0,
0
},
128
2
},
{UserMappingRelationId, /* USERMAPPINGUSERSERVER */
UserMappingUserServerIndexId,
@ -794,7 +794,7 @@ static const struct cachedesc cacheinfo[] = {
0,
0
},
128
2
}
};