mikemccand commented on issue #13768:
URL: https://github.com/apache/lucene/issues/13768#issuecomment-2346091188
OK I disabled Panama (via temporary code change in
`VectorizationProvider.java` -- we don't accept sysprops to disable this
anymore right?):
```
recall latency (ms) nDoc topK fanout maxConn beamWidth quantized
index s force merge s num segments index size (MB)
0.318 0.312 1500000 10 6 32 50 4 bits
175.21 125.64 1 5013.21
0.319 0.285 1500000 10 6 32 50 4 bits
174.54 124.80 1 5562.51
```
Indeed there is some performance penalty now (285 usec -> 312 usec, ~9.5%)
... recall also bounced around a bit, but prolly that's acceptable HNSW
randomness noise. And wow look how much slower indexing / force merging got
... those SIMD instructions clearly help ;)
But I don't think we should block removing `compress` option due to non-SIMD
results?
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