The Silent Recall Drop: pgvector HNSW Under Concurrent Writes 02:11:47 WARN ingest p99_insert_ms=3412 rows=48000 workers=6 02:11:47 WARN lockwait relation=job_chunks_hnsw held=2980ms 02:12:03 INFO eval recall@10=0. 52 baseline=0. 91 Two regressions in the same window, and only one of them was...

Source: [Dev.to](https://dev.to/samuel_oakley/the-silent-recall-drop-pgvector-hnsw-under-concurrent-writes-49jp)

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