robertvanwinkle1138 commented on issue #12615: URL: https://github.com/apache/lucene/issues/12615#issuecomment-1805417696
Another notable difference in the Lucene implementation is delta variable byte encoding of node ids. The increase in disk space requires the user to purchase more RAM per server. Also variable byte encoding is significantly slower to decode than raw integers. In the example [listed](https://github.com/apache/lucene/issues/12615#issuecomment-1793186041) the jvec index size is a whopping 32% greater. https://github.com/apache/lucene/blob/main/lucene/core/src/java/org/apache/lucene/codecs/lucene99/Lucene99HnswVectorsReader.java#L593 https://github.com/jbellis/jvector/blob/main/jvector-base/src/main/java/io/github/jbellis/jvector/disk/OnDiskGraphIndex.java#L130 -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: issues-unsubscr...@lucene.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@lucene.apache.org For additional commands, e-mail: issues-h...@lucene.apache.org
