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https://issues.apache.org/jira/browse/LUCENE-3892?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13431762#comment-13431762
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Han Jiang commented on LUCENE-3892:
-----------------------------------
Thank you Adrien! The BlockPacked PF also worked well on my computer :)
{noformat}
Task QPS base StdDev base QPS packedStdDev packed Pct
diff
AndHighHigh 122.57 3.01 123.90 2.49 -3% -
5%
AndHighLow 2260.53 21.18 2273.77 55.09 -2% -
3%
AndHighMed 328.01 8.18 329.31 11.36 -5% -
6%
Fuzzy1 86.37 0.94 86.24 2.12 -3% -
3%
Fuzzy2 31.40 0.46 31.22 0.64 -4% -
2%
HighPhrase 9.09 0.51 9.15 0.40 -8% -
11%
HighSloppyPhrase 5.30 0.25 5.34 0.08 -5% -
7%
HighSpanNear 10.11 0.44 10.42 0.34 -4% -
11%
HighTerm 179.43 7.26 178.96 5.70 -7% -
7%
IntNRQ 61.87 3.79 60.59 4.31 -14% -
11%
LowPhrase 41.23 1.54 42.97 1.32 -2% -
11%
LowSloppyPhrase 62.83 2.11 68.23 0.99 3% -
14%
LowSpanNear 81.28 2.74 85.74 2.67 -1% -
12%
LowTerm 1763.70 29.21 1778.41 23.07 -2% -
3%
MedPhrase 27.06 1.16 27.54 0.88 -5% -
9%
MedSloppyPhrase 31.82 1.16 33.70 0.14 1% -
10%
MedSpanNear 23.09 0.93 23.84 0.79 -4% -
11%
MedTerm 659.09 22.65 671.54 19.79 -4% -
8%
OrHighHigh 27.36 0.52 27.41 1.25 -6% -
6%
OrHighLow 154.99 2.07 156.20 7.08 -5% -
6%
OrHighMed 105.13 1.52 105.30 4.65 -5% -
6%
PKLookup 210.64 6.95 217.57 2.08 0% -
7%
Prefix3 170.22 6.22 166.80 4.18 -7% -
4%
Respell 83.96 1.47 83.75 1.25 -3% -
3%
Wildcard 155.08 4.31 155.31 3.12 -4% -
5%
{noformat}
> 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 - Core
> Issue Type: Improvement
> Reporter: Michael McCandless
> Labels: gsoc2012, lucene-gsoc-12
> Fix For: 4.1
>
> Attachments: LUCENE-3892-BlockTermScorer.patch,
> LUCENE-3892-blockFor&hardcode(base).patch,
> LUCENE-3892-blockFor&packedecoder(comp).patch,
> LUCENE-3892-blockFor-with-packedints-decoder.patch,
> LUCENE-3892-blockFor-with-packedints-decoder.patch,
> LUCENE-3892-blockFor-with-packedints.patch, LUCENE-3892-bulkVInt.patch,
> LUCENE-3892-direct-IntBuffer.patch, LUCENE-3892-for&pfor-with-javadoc.patch,
> LUCENE-3892-handle_open_files.patch, LUCENE-3892-non-specialized.patch,
> LUCENE-3892-pfor-compress-iterate-numbits.patch,
> LUCENE-3892-pfor-compress-slow-estimate.patch, LUCENE-3892_for_byte[].patch,
> LUCENE-3892_for_int[].patch, LUCENE-3892_for_unfold_method.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.
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