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Reduced lock contention with parallel HNSW index builds

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This commit is contained in:
Andrew Kane
2024-03-11 19:50:48 -07:00
parent 569fd36396
commit c207a2d50e
2 changed files with 6 additions and 2 deletions
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4
CHANGELOG.md
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@@ -1,3 +1,7 @@
## 0.6.2 (unreleased)
- Reduced lock contention with parallel HNSW index builds
## 0.6.1 (2024-03-04)
- Fixed error with `ANALYZE` and vectors with different dimensions

4
src/hnswbuild.c
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@@ -437,8 +437,8 @@ InsertTupleInMemory(HnswBuildState * buildstate, HnswElement element)
char *base = buildstate->hnswarea;
/* Wait if another process needs exclusive lock */
LWLockAcquire(entryWaitLock, LW_EXCLUSIVE);
LWLockRelease(entryWaitLock);
if (LWLockAcquireOrWait(entryWaitLock, LW_EXCLUSIVE))
LWLockRelease(entryWaitLock);
/* Get entry point */
LWLockAcquire(entryLock, LW_SHARED);