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https://issues.apache.org/jira/browse/LUCENE-2886?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12990555#comment-12990555
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Michael McCandless commented on LUCENE-2886:
--------------------------------------------
I test perf of BulkVInt vs Simple64VarInt (Linux, 10M wikipedia index,
NIOFSDir, multi-seg, java -server -Xbatch -Xmx2g -Xms2g):
||Query||QPS bulkvint||QPS simple64varint||Pct diff||||
|+united +states|19.46|16.47|{color:red}-15.4%{color}|
|"united states"|11.92|10.09|{color:red}-15.3%{color}|
|unit~0.5|17.35|16.96|{color:red}-2.2%{color}|
|"united states"~3|5.70|5.72|{color:green}0.3%{color}|
|united~0.6|8.24|8.31|{color:green}0.8%{color}|
|doctitle:.*[Uu]nited.*|5.36|5.48|{color:green}2.1%{color}|
|united~0.75|12.45|12.75|{color:green}2.4%{color}|
|unit~0.7|27.37|28.08|{color:green}2.6%{color}|
|spanFirst(unit, 5)|156.48|162.78|{color:green}4.0%{color}|
|united states|15.35|16.07|{color:green}4.7%{color}|
|spanNear([unit, state], 10, true)|42.84|46.11|{color:green}7.6%{color}|
|states|48.13|52.03|{color:green}8.1%{color}|
|unit*|32.80|37.07|{color:green}13.0%{color}|
|doctimesecnum:[10000 TO 60000]|12.38|14.16|{color:green}14.4%{color}|
|uni*|18.66|21.53|{color:green}15.3%{color}|
|u*d|9.66|11.17|{color:green}15.7%{color}|
|un*d|19.00|22.04|{color:green}16.0%{color}|
|+nebraska +states|101.66|141.83|{color:green}39.5%{color}|
> Adaptive Frame Of Reference
> ----------------------------
>
> Key: LUCENE-2886
> URL: https://issues.apache.org/jira/browse/LUCENE-2886
> Project: Lucene - Java
> Issue Type: New Feature
> Components: Codecs
> Reporter: Renaud Delbru
> Fix For: 4.0
>
> Attachments: LUCENE-2886_simple64.patch,
> LUCENE-2886_simple64_varint.patch, lucene-afor.tar.gz
>
>
> We could test the implementation of the Adaptive Frame Of Reference [1] on
> the lucene-4.0 branch.
> I am providing the source code of its implementation. Some work needs to be
> done, as this implementation is working on the old lucene-1458 branch.
> I will attach a tarball containing a running version (with tests) of the AFOR
> implementation, as well as the implementations of PFOR and of Simple64
> (simple family codec working on 64bits word) that has been used in the
> experiments in [1].
> [1] http://www.deri.ie/fileadmin/documents/deri-tr-afor.pdf
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