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[PATCH 4/4] add force_incremental_sort GUC 3+ messages / 3 participants [nested] [flat]
* [PATCH 4/4] add force_incremental_sort GUC @ 2019-07-09 11:36 Tomas Vondra <[email protected]> 0 siblings, 0 replies; 3+ messages in thread From: Tomas Vondra @ 2019-07-09 11:36 UTC (permalink / raw) --- src/backend/optimizer/path/costsize.c | 8 ++++++++ src/backend/utils/misc/guc.c | 10 ++++++++++ src/include/optimizer/cost.h | 1 + 3 files changed, 19 insertions(+) diff --git a/src/backend/optimizer/path/costsize.c b/src/backend/optimizer/path/costsize.c index c6aa17ba67..ee4487b158 100644 --- a/src/backend/optimizer/path/costsize.c +++ b/src/backend/optimizer/path/costsize.c @@ -140,6 +140,8 @@ bool enable_parallel_append = true; bool enable_parallel_hash = true; bool enable_partition_pruning = true; +bool force_incremental_sort = true; + typedef struct { PlannerInfo *root; @@ -1907,6 +1909,12 @@ cost_incremental_sort(Path *path, path->rows = input_tuples; path->startup_cost = startup_cost; path->total_cost = startup_cost + run_cost; + + if (force_incremental_sort) + { + path->startup_cost = input_startup_cost; + path->total_cost = input_total_cost; + } } /* diff --git a/src/backend/utils/misc/guc.c b/src/backend/utils/misc/guc.c index f922ee66a0..d2cc5b56b5 100644 --- a/src/backend/utils/misc/guc.c +++ b/src/backend/utils/misc/guc.c @@ -941,6 +941,16 @@ static struct config_bool ConfigureNamesBool[] = true, NULL, NULL, NULL }, + { + {"force_incremental_sort", PGC_USERSET, QUERY_TUNING_METHOD, + gettext_noop("Makes the incremental sort look like no-cost."), + NULL, + GUC_EXPLAIN + }, + &force_incremental_sort, + false, + NULL, NULL, NULL + }, { {"enable_incrementalsort", PGC_USERSET, QUERY_TUNING_METHOD, gettext_noop("Enables the planner's use of incremental sort steps."), diff --git a/src/include/optimizer/cost.h b/src/include/optimizer/cost.h index b9d7a77e65..bad1d5a330 100644 --- a/src/include/optimizer/cost.h +++ b/src/include/optimizer/cost.h @@ -66,6 +66,7 @@ extern PGDLLIMPORT bool enable_parallel_append; extern PGDLLIMPORT bool enable_parallel_hash; extern PGDLLIMPORT bool enable_partition_pruning; extern PGDLLIMPORT int constraint_exclusion; +extern PGDLLIMPORT bool force_incremental_sort; extern double index_pages_fetched(double tuples_fetched, BlockNumber pages, double index_pages, PlannerInfo *root); -- 2.21.0 --z44ikx7gwyo2xwzv-- ^ permalink raw reply [nested|flat] 3+ messages in thread
* [PATCH v1 8/9] ci: Don't specify amount of memory @ 2023-08-08 00:31 Andres Freund <[email protected]> 0 siblings, 0 replies; 3+ messages in thread From: Andres Freund @ 2023-08-08 00:31 UTC (permalink / raw) The number of CPUs is the cost-determining factor. Most instance types that run tests have more memory/core than what we specified, there's no real benefit in wasting that. --- .cirrus.yml | 4 ---- 1 file changed, 4 deletions(-) diff --git a/.cirrus.yml b/.cirrus.yml index ef825485826..a4d64955489 100644 --- a/.cirrus.yml +++ b/.cirrus.yml @@ -150,7 +150,6 @@ task: image: family/pg-ci-freebsd-13 platform: freebsd cpu: $CPUS - memory: 4G disk: 50 sysinfo_script: | @@ -292,7 +291,6 @@ task: image: family/pg-ci-bullseye platform: linux cpu: $CPUS - memory: 4G ccache_cache: folder: ${CCACHE_DIR} @@ -554,7 +552,6 @@ task: image: family/pg-ci-windows-ci-vs-2019 platform: windows cpu: $CPUS - memory: 4G setup_additional_packages_script: | REM choco install -y --no-progress ... @@ -604,7 +601,6 @@ task: image: family/pg-ci-windows-ci-mingw64 platform: windows cpu: $CPUS - memory: 4G env: TEST_JOBS: 4 # higher concurrency causes occasional failures -- 2.38.0 --uu4yojthqnm7ulmd-- ^ permalink raw reply [nested|flat] 3+ messages in thread
* [PATCH 2/6] Refactor index_concurrently_create_copy() for use with REPACK (CONCURRENTLY). @ 2026-01-22 08:23 Antonin Houska <[email protected]> 0 siblings, 0 replies; 3+ messages in thread From: Antonin Houska @ 2026-01-22 08:23 UTC (permalink / raw) This patch moves the code to index_create_copy() and adds a "concurrently" parameter so it can be used by REPACK (CONCURRENTLY). With the CONCURRENTLY option, REPACK cannot simply swap the heap file and rebuild its indexes. Instead, it needs to build a separate set of indexes (including system catalog entries) *before* the actual swap, to reduce the time AccessExclusiveLock needs to be held for. --- src/backend/catalog/index.c | 54 +++++++++++++++++++++++--------- src/backend/commands/indexcmds.c | 6 ++-- src/backend/nodes/makefuncs.c | 9 +++--- src/include/catalog/index.h | 3 ++ src/include/nodes/makefuncs.h | 4 ++- 5 files changed, 54 insertions(+), 22 deletions(-) diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c index 5ee6389d39c..f8e6c3d804e 100644 --- a/src/backend/catalog/index.c +++ b/src/backend/catalog/index.c @@ -1288,15 +1288,32 @@ index_create(Relation heapRelation, /* * index_concurrently_create_copy * - * Create concurrently an index based on the definition of the one provided by - * caller. The index is inserted into catalogs and needs to be built later - * on. This is called during concurrent reindex processing. - * - * "tablespaceOid" is the tablespace to use for this index. + * Variant of index_create_copy(), called during concurrent reindex + * processing. */ Oid index_concurrently_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid, const char *newName) +{ + return index_create_copy(heapRelation, oldIndexId, tablespaceOid, newName, + true); +} + +/* + * index_create_copy + * + * Create an index based on the definition of the one provided by caller. The + * index is inserted into catalogs. If 'concurrently' is TRUE, it needs to be + * built later on, otherwise it's built immediately. + * + * "tablespaceOid" is the tablespace to use for this index. + * + * The actual implementation of index_concurrently_create_copy(), reusable for + * other purposes. + */ +Oid +index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid, + const char *newName, bool concurrently) { Relation indexRelation; IndexInfo *oldInfo, @@ -1315,6 +1332,7 @@ index_concurrently_create_copy(Relation heapRelation, Oid oldIndexId, List *indexColNames = NIL; List *indexExprs = NIL; List *indexPreds = NIL; + int flags = 0; indexRelation = index_open(oldIndexId, RowExclusiveLock); @@ -1325,7 +1343,7 @@ index_concurrently_create_copy(Relation heapRelation, Oid oldIndexId, * Concurrent build of an index with exclusion constraints is not * supported. */ - if (oldInfo->ii_ExclusionOps != NULL) + if (oldInfo->ii_ExclusionOps != NULL && concurrently) ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("concurrent index creation for exclusion constraints is not supported"))); @@ -1381,9 +1399,7 @@ index_concurrently_create_copy(Relation heapRelation, Oid oldIndexId, } /* - * Build the index information for the new index. Note that rebuild of - * indexes with exclusion constraints is not supported, hence there is no - * need to fill all the ii_Exclusion* fields. + * Build the index information for the new index. */ newInfo = makeIndexInfo(oldInfo->ii_NumIndexAttrs, oldInfo->ii_NumIndexKeyAttrs, @@ -1392,10 +1408,13 @@ index_concurrently_create_copy(Relation heapRelation, Oid oldIndexId, indexPreds, oldInfo->ii_Unique, oldInfo->ii_NullsNotDistinct, - false, /* not ready for inserts */ - true, + !concurrently, /* isready */ + concurrently, /* concurrent */ indexRelation->rd_indam->amsummarizing, - oldInfo->ii_WithoutOverlaps); + oldInfo->ii_WithoutOverlaps, + oldInfo->ii_ExclusionOps, + oldInfo->ii_ExclusionProcs, + oldInfo->ii_ExclusionStrats); /* * Extract the list of column names and the column numbers for the new @@ -1433,6 +1452,9 @@ index_concurrently_create_copy(Relation heapRelation, Oid oldIndexId, stattargets[i].isnull = isnull; } + if (concurrently) + flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT; + /* * Now create the new index. * @@ -1456,7 +1478,7 @@ index_concurrently_create_copy(Relation heapRelation, Oid oldIndexId, indcoloptions->values, stattargets, reloptionsDatum, - INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT, + flags, 0, true, /* allow table to be a system catalog? */ false, /* is_internal? */ @@ -2450,7 +2472,8 @@ BuildIndexInfo(Relation index) indexStruct->indisready, false, index->rd_indam->amsummarizing, - indexStruct->indisexclusion && indexStruct->indisunique); + indexStruct->indisexclusion && indexStruct->indisunique, + NULL, NULL, NULL); /* fill in attribute numbers */ for (i = 0; i < numAtts; i++) @@ -2510,7 +2533,8 @@ BuildDummyIndexInfo(Relation index) indexStruct->indisready, false, index->rd_indam->amsummarizing, - indexStruct->indisexclusion && indexStruct->indisunique); + indexStruct->indisexclusion && indexStruct->indisunique, + NULL, NULL, NULL); /* fill in attribute numbers */ for (i = 0; i < numAtts; i++) diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c index 635679cc1f2..34209bd1393 100644 --- a/src/backend/commands/indexcmds.c +++ b/src/backend/commands/indexcmds.c @@ -243,7 +243,8 @@ CheckIndexCompatible(Oid oldId, */ indexInfo = makeIndexInfo(numberOfAttributes, numberOfAttributes, accessMethodId, NIL, NIL, false, false, - false, false, amsummarizing, isWithoutOverlaps); + false, false, amsummarizing, isWithoutOverlaps, + NULL, NULL, NULL); typeIds = palloc_array(Oid, numberOfAttributes); collationIds = palloc_array(Oid, numberOfAttributes); opclassIds = palloc_array(Oid, numberOfAttributes); @@ -930,7 +931,8 @@ DefineIndex(ParseState *pstate, !concurrent, concurrent, amissummarizing, - stmt->iswithoutoverlaps); + stmt->iswithoutoverlaps, + NULL, NULL, NULL); typeIds = palloc_array(Oid, numberOfAttributes); collationIds = palloc_array(Oid, numberOfAttributes); diff --git a/src/backend/nodes/makefuncs.c b/src/backend/nodes/makefuncs.c index 2caec621d73..ca7e21e8349 100644 --- a/src/backend/nodes/makefuncs.c +++ b/src/backend/nodes/makefuncs.c @@ -834,7 +834,8 @@ IndexInfo * makeIndexInfo(int numattrs, int numkeyattrs, Oid amoid, List *expressions, List *predicates, bool unique, bool nulls_not_distinct, bool isready, bool concurrent, bool summarizing, - bool withoutoverlaps) + bool withoutoverlaps, Oid *exclusion_ops, Oid *exclusion_procs, + uint16 *exclusion_strats) { IndexInfo *n = makeNode(IndexInfo); @@ -863,9 +864,9 @@ makeIndexInfo(int numattrs, int numkeyattrs, Oid amoid, List *expressions, n->ii_PredicateState = NULL; /* exclusion constraints */ - n->ii_ExclusionOps = NULL; - n->ii_ExclusionProcs = NULL; - n->ii_ExclusionStrats = NULL; + n->ii_ExclusionOps = exclusion_ops; + n->ii_ExclusionProcs = exclusion_procs; + n->ii_ExclusionStrats = exclusion_strats; /* speculative inserts */ n->ii_UniqueOps = NULL; diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h index b259c4141ed..3426087b445 100644 --- a/src/include/catalog/index.h +++ b/src/include/catalog/index.h @@ -99,6 +99,9 @@ extern Oid index_concurrently_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid, const char *newName); +extern Oid index_create_copy(Relation heapRelation, Oid oldIndexId, + Oid tablespaceOid, const char *newName, + bool concurrently); extern void index_concurrently_build(Oid heapRelationId, Oid indexRelationId); diff --git a/src/include/nodes/makefuncs.h b/src/include/nodes/makefuncs.h index 982ec25ae14..dcea148ae1a 100644 --- a/src/include/nodes/makefuncs.h +++ b/src/include/nodes/makefuncs.h @@ -99,7 +99,9 @@ extern IndexInfo *makeIndexInfo(int numattrs, int numkeyattrs, Oid amoid, List *expressions, List *predicates, bool unique, bool nulls_not_distinct, bool isready, bool concurrent, - bool summarizing, bool withoutoverlaps); + bool summarizing, bool withoutoverlaps, + Oid *exclusion_ops, Oid *exclusion_procs, + uint16 *exclusion_strats); extern Node *makeStringConst(char *str, int location); extern DefElem *makeDefElem(char *name, Node *arg, int location); -- 2.47.3 --=-=-= Content-Type: text/x-diff Content-Disposition: attachment; filename=v31-0003-Move-conversion-of-a-historic-to-MVCC-snapshot-to-a-.patch ^ permalink raw reply [nested|flat] 3+ messages in thread
end of thread, other threads:[~2026-01-22 08:23 UTC | newest] Thread overview: 3+ messages (download: mbox mbox.gz follow: Atom feed) -- links below jump to the message on this page -- 2019-07-09 11:36 [PATCH 4/4] add force_incremental_sort GUC Tomas Vondra <[email protected]> 2023-08-08 00:31 [PATCH v1 8/9] ci: Don't specify amount of memory Andres Freund <[email protected]> 2026-01-22 08:23 [PATCH 2/6] Refactor index_concurrently_create_copy() for use with REPACK (CONCURRENTLY). Antonin Houska <[email protected]>
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