benwtrent commented on PR #14304:
URL: https://github.com/apache/lucene/pull/14304#issuecomment-2713553719
On GCP, there isn't much difference. I wouldn't expect there to be a huge
amount of difference as the dominate cost is the vector comparisons not the
quantization.
I haven't tested with "flat" yet.
BASELINE
```
recall latency (ms) nDoc topK fanout maxConn beamWidth quantized
visited index s index docs/s force merge s num segments index size (MB)
vec disk (MB) vec RAM (MB)
0.961 2.910 200000 100 50 64 250 7 bits
6677 111.44 1794.70 79.03 1 997.58
976.563 195.313
```
CANDIDATE
```
recall latency (ms) nDoc topK fanout maxConn beamWidth quantized
visited index s index docs/s force merge s num segments index size (MB)
vec disk (MB) vec RAM (MB)
0.960 2.460 200000 100 50 64 250 7 bits
6527 110.99 1801.98 76.68 1 997.55
976.563 195.313
```
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