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Yonik Seeley commented on LUCENE-7261: -------------------------------------- Thanks Adrien, interesting. Definitely not the results I expected (but I never tested against anything else). IIRC I think reorder looked a bit different in my implementation. When I get some time, I'll take a crack at it just for the fun of it :-) > Speed up LSBRadixSorter > ----------------------- > > Key: LUCENE-7261 > URL: https://issues.apache.org/jira/browse/LUCENE-7261 > Project: Lucene - Core > Issue Type: Improvement > Reporter: Adrien Grand > Assignee: Adrien Grand > Priority: Minor > Fix For: 6.1, master (7.0) > > Attachments: LUCENE-7261.patch, MSBRadixSorter.java > > > Currently it always does 4 passes over the data (one per byte, since ints > have 4 bytes). However, most of the time, we know {{maxDoc}}, so we can use > this information to do fewer passes when they are not necessary. For > instance, if maxDoc is less than or equal to 2^24, we only need 3 passes, and > if maxDoc is less than or equals to 2^16, we only need two passes. -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org