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https://issues.apache.org/jira/browse/LUCENE-3648?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Simon Willnauer updated LUCENE-3648:
------------------------------------
Attachment: LUCENE-3648.patch
here is a new patch that gives me more stable results.
without deletes:
{code}
Task QPS trunk StdDev trunk QPS patch StdDev patch Pct
diff
SloppyPhrase 3.97 0.20 3.88 0.25 -12% -
9%
Phrase 13.93 0.73 13.67 0.82 -12% -
9%
Respell 45.64 1.99 45.08 2.32 -10% -
8%
Fuzzy2 20.12 0.86 20.05 1.07 -9% -
9%
SpanNear 5.97 0.27 5.98 0.21 -7% -
8%
Fuzzy1 54.91 2.14 55.08 2.54 -7% -
9%
PKLookup 88.94 5.86 90.98 4.66 -8% -
15%
TermGroup1M 17.59 0.25 18.07 0.25 0% -
5%
Wildcard 42.64 1.22 43.86 1.08 -2% -
8%
TermBGroup1M1P 37.90 0.93 39.22 0.35 0% -
7%
TermBGroup1M 13.14 0.24 13.64 0.18 0% -
7%
Prefix3 32.60 1.14 34.01 0.90 -1% -
10%
IntNRQ 5.06 0.45 5.36 0.40 -9% -
24%
AndHighMed 32.92 1.87 35.00 2.26 -5% -
19%
AndHighHigh 7.63 0.41 8.14 0.44 -4% -
18%
Term 70.92 3.59 76.52 4.56 -3% -
20%
OrHighMed 6.89 0.25 7.44 0.29 0% -
16%
OrHighHigh 3.41 0.13 3.70 0.15 0% -
17%
{code}
with deletes:
{code}
Task QPS trunk StdDev trunk QPS patch StdDev patch Pct
diff
PKLookup 92.65 5.06 91.04 4.36 -11% -
8%
AndHighHigh 9.55 0.58 9.54 0.43 -10% -
11%
Respell 47.56 2.19 47.60 2.22 -8% -
9%
Fuzzy2 44.42 2.15 44.54 2.09 -8% -
10%
SloppyPhrase 3.66 0.17 3.68 0.19 -8% -
10%
AndHighMed 18.79 1.69 18.90 1.04 -12% -
16%
Fuzzy1 51.89 2.44 52.25 2.30 -8% -
10%
TermBGroup1M1P 26.23 0.61 26.57 0.63 -3% -
6%
Phrase 9.25 0.72 9.38 0.69 -12% -
17%
SpanNear 2.86 0.13 2.90 0.11 -6% -
10%
TermBGroup1M 27.50 0.62 27.90 0.73 -3% -
6%
TermGroup1M 25.48 0.58 25.87 0.59 -2% -
6%
Wildcard 19.02 0.70 19.43 0.67 -4% -
9%
Term 41.22 1.70 42.15 1.94 -6% -
11%
IntNRQ 4.52 0.27 4.63 0.33 -10% -
16%
Prefix3 18.09 0.77 18.59 0.70 -5% -
11%
OrHighMed 9.09 0.42 9.70 0.34 -1% -
15%
OrHighHigh 6.56 0.29 7.00 0.23 -1% -
15%
{code}
> Speed up SegementDocsEnum by making it more friendly for JIT optimizations
> --------------------------------------------------------------------------
>
> Key: LUCENE-3648
> URL: https://issues.apache.org/jira/browse/LUCENE-3648
> Project: Lucene - Java
> Issue Type: Improvement
> Components: core/codecs, core/search
> Affects Versions: 4.0
> Reporter: Simon Willnauer
> Assignee: Simon Willnauer
> Fix For: 4.0
>
> Attachments: LUCENE-3648.patch, LUCENE-3648.patch
>
>
> Since we moved the bulk reading into the codec ie. make all bulk reading
> codec private in LUCENE-3584 we have seen some performance
> [regression|http://people.apache.org/~mikemccand/lucenebench/Term.html] on
> different CPUs. I tried to optimize the implementation to make it more
> eligible for runtime optimizations, tried to make loops JIT friendly by
> moving out branches where I can, minimize member access in all loops, use
> final members where possible and specialize the two common cases With &
> Without LiveDocs.
> I will attache a patch and my benchmark results in a minute.
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