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Use a lower max allocation size than default to allow scanning more tuples for iterative search before exceeding work_mem [skip ci]

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Andrew Kane
2024-10-10 20:57:57 -07:00
parent 124018b8dd
commit 8e88b481a6
1 changed files with 6 additions and 1 deletions
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7
src/hnswscan.c
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@@ -118,9 +118,14 @@ hnswbeginscan(Relation index, int nkeys, int norderbys)
so->first = true; so->first = true;
so->v.tids = NULL; so->v.tids = NULL;
so->discarded = NULL; so->discarded = NULL;
/*
* Use a lower max allocation size than default to allow scanning more
* tuples for iterative search before exceeding work_mem
*/
so->tmpCtx = AllocSetContextCreate(CurrentMemoryContext, so->tmpCtx = AllocSetContextCreate(CurrentMemoryContext,
"Hnsw scan temporary context", "Hnsw scan temporary context",
ALLOCSET_DEFAULT_SIZES); 0, 8 * 1024, 512 * 1024);
/* Set support functions */ /* Set support functions */
HnswInitSupport(&so->support, index); HnswInitSupport(&so->support, index);