kaivalnp commented on PR #14178:
URL: https://github.com/apache/lucene/pull/14178#issuecomment-2622861110
@benwtrent Thanks for the input! I tried what you mentioned above:
> I would reduce the number of indexing threads to 1, faiss threads to 1,
and merge workers to 1
Lucene:
```
recall latency (ms) nDoc topK fanout maxConn beamWidth quantized
index s index docs/s force merge s num segments index size (MB) vec disk
(MB) vec RAM (MB)
0.812 1.405 200000 100 50 32 200 no
146.34 1366.70 0.01 1 236.93
228.882 228.882
```
Faiss:
```
recall latency (ms) nDoc topK fanout maxConn beamWidth quantized
index s index docs/s force merge s num segments index size (MB) vec disk
(MB) vec RAM (MB)
0.811 1.106 200000 100 50 32 200 no
146.58 1364.41 0.01 1 511.20
228.882 228.882
```
..and the results are surprisingly similar! (ran it twice just to confirm)
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