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Michael McCandless commented on LUCENE-3892: -------------------------------------------- Those are interesting results! Curious how much faster indexing is for PFor if you use all_Vs; cutting the header is also a nice reduction on index size. Instead of having P/ForUtil reach up into P/ForPostingsFormat for the default block size, I think we can assume the int[] array length (of the decoded buffer) is the size of the block? > Add a useful intblock postings format (eg, FOR, PFOR, PFORDelta, > Simple9/16/64, etc.) > ------------------------------------------------------------------------------------- > > Key: LUCENE-3892 > URL: https://issues.apache.org/jira/browse/LUCENE-3892 > Project: Lucene - Java > Issue Type: Improvement > Reporter: Michael McCandless > Labels: gsoc2012, lucene-gsoc-12 > Fix For: 4.1 > > Attachments: LUCENE-3892-BlockTermScorer.patch, > LUCENE-3892-direct-IntBuffer.patch, LUCENE-3892-for&pfor-with-javadoc.patch, > LUCENE-3892-for&pfor-with-javadoc.patch, > LUCENE-3892-for&pfor-with-javadoc.patch, > LUCENE-3892-for&pfor-with-javadoc.patch, LUCENE-3892-for&pfor.patch, > LUCENE-3892-handle_open_files.patch, LUCENE-3892_for.patch, > LUCENE-3892_for_byte[].patch, LUCENE-3892_for_int[].patch, > LUCENE-3892_for_unfold_method.patch, LUCENE-3892_pfor.patch, > LUCENE-3892_pfor.patch, LUCENE-3892_pfor.patch, > LUCENE-3892_pfor_unfold_method.patch, LUCENE-3892_pulsing_support.patch, > LUCENE-3892_settings.patch, LUCENE-3892_settings.patch > > > On the flex branch we explored a number of possible intblock > encodings, but for whatever reason never brought them to completion. > There are still a number of issues opened with patches in different > states. > Initial results (based on prototype) were excellent (see > http://blog.mikemccandless.com/2010/08/lucene-performance-with-pfordelta-codec.html > ). > I think this would make a good GSoC project. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org