ChrisHegarty commented on PR #14980:
URL: https://github.com/apache/lucene/pull/14980#issuecomment-3141192639
Some luceneutil benchmark results, showing a nice improvement in search
latency and force merge times.
Linux Skylake
```
baseline
recall latency(ms) netCPU avgCpuCount 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) indexType
0.942 2.502 2.497 0.998 1000000 100 50 64
250 no 2021.03 494.80 959.16 1
3022.71 2929.688 2929.688 HNSW
0.942 2.528 2.521 0.997 1000000 100 50 64
250 no 0.00 Infinity 0.09 1
3022.71 2929.688 2929.688 HNSW
0.942 2.525 2.518 0.997 1000000 100 50 64
250 no 0.00 Infinity 0.09 1
3022.71 2929.688 2929.688 HNSW
candidate
0.941 2.029 2.016 0.994 1000000 100 50 64
250 no 1969.44 507.76 572.05 1
3020.53 2929.688 2929.688 HNSW
0.941 2.019 2.011 0.996 1000000 100 50 64
250 no 0.00 Infinity 0.09 1
3020.53 2929.688 2929.688 HNSW
0.941 2.019 2.011 0.996 1000000 100 50 64
250 no 0.00 Infinity 0.09 1
3020.53 2929.688 2929.688 HNSW
```
linux-arm (c6g.8xlarge)
```
baseline (forcemerge)
recall latency(ms) netCPU avgCpuCount 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) indexType
0.939 4.012 4.003 0.998 500000 100 50 32
250 no 300.48 1664.02 511.45 1
1504.30 1464.844 1464.844 HNSW
0.939 4.139 4.130 0.998 500000 100 50 32
250 no 0.00 Infinity 0.16 1
1504.30 1464.844 1464.844 HNSW
0.939 4.207 4.198 0.998 500000 100 50 32
250 no 0.00 Infinity 0.17 1
1504.30 1464.844 1464.844 HNSW
candidate
0.936 2.895 2.881 0.995 500000 100 50 32
250 no 221.61 2256.25 325.71 1
1503.43 1464.844 1464.844 HNSW
0.936 2.884 2.875 0.997 500000 100 50 32
250 no 0.00 Infinity 0.18 1
1503.43 1464.844 1464.844 HNSW
0.936 2.845 2.836 0.997 500000 100 50 32
250 no 0.00 Infinity 0.17 1
1503.43 1464.844 1464.844 HNSW
```
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