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Andrew Kane
2024-01-09 13:33:03 -08:00
parent 7d75d423e4
commit 8a65c0e831
1 changed files with 16 additions and 16 deletions
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@@ -190,22 +190,6 @@ CREATE INDEX ON items USING hnsw (embedding vector_cosine_ops);
Vectors with up to 2,000 dimensions can be indexed. Vectors with up to 2,000 dimensions can be indexed.
### Index Build Time
Indexes build significantly faster when the graph fits into `maintenance_work_mem`
```sql
SET maintenance_work_mem = '8GB';
```
A notice is shown when the graph no longer fits
```text
NOTICE: hnsw graph no longer fits into maintenance_work_mem after 100000 tuples
DETAIL: Building will take significantly more time.
HINT: Increase maintenance_work_mem to speed up builds.
```
### Index Options ### Index Options
Specify HNSW parameters Specify HNSW parameters
@@ -238,6 +222,22 @@ SELECT ...
COMMIT; COMMIT;
``` ```
### Index Build Time
Indexes build significantly faster when the graph fits into `maintenance_work_mem`
```sql
SET maintenance_work_mem = '8GB';
```
A notice is shown when the graph no longer fits
```text
NOTICE: hnsw graph no longer fits into maintenance_work_mem after 100000 tuples
DETAIL: Building will take significantly more time.
HINT: Increase maintenance_work_mem to speed up builds.
```
### Indexing Progress ### Indexing Progress
Check [indexing progress](https://www.postgresql.org/docs/current/progress-reporting.html#CREATE-INDEX-PROGRESS-REPORTING) with Postgres 12+ Check [indexing progress](https://www.postgresql.org/docs/current/progress-reporting.html#CREATE-INDEX-PROGRESS-REPORTING) with Postgres 12+