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OR performance #1282

Closed githubmanticore closed 1 year ago

githubmanticore commented 1 year ago

OR searches seems to be 6% average slower in v3 than v2. @glook says he has some ideas to speed it up

A longer topic here (maybe another ticket?): OR searches were already slow compared to mysql or lucene ones (even with ranker=none).
We should investigate how we can make 'dumb' OR searches very fast.

githubmanticore commented 1 year ago

➤ Adrian Nuta commented:

Adding here https://www.elastic.co/blog/faster-retrieval-of-top-hits-in-elasticsearch-with-block-max-wand

githubmanticore commented 1 year ago

➤ Sergey Nikolaev commented:

This one is based this paper http://engineering.nyu.edu/~suel/papers/bmw.pdf There's a continuation of that - http://engineering.nyu.edu/~suel/papers/bmm.pdf

githubmanticore commented 1 year ago

➤ Ilya Kuznetsov commented:

Some interesting stuff here too: http://wwwconference.org/www2008/papers/pdf/p387-zhangA.pdf Particularly the comparison of decompression speed of pfordelta and varint.