[
https://issues.apache.org/jira/browse/LUCENE-1345?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Eks Dev updated LUCENE-1345:
----------------------------
Attachment: TestIteratorPerf.java
Hi Paul,
I gave it a try on micro benchmarking, and it looks like we could gain a lot by
switcing to sentinel approach for iterators, apart for being faster they are
also a bit robuster to "one off" bugs.
This test is just a simulation made assuming docId is long (I have tried it
with int and it is about the same result).
Just attaching it here as I did not want to create new issue for now, before we
identify if there are some design/performance knock-out criteria.
test on my setup:
32bit java version "1.6.0_10-rc"
java(TM) SE Runtime Environment (build 1.6.0_10-rc-b28)
Windows XP Profesional 32bit
notebook, 3Gb RAM,
CPU x86 Family 6 Model 15 Stepping 11 GenuineIntel ~2194 Mhz
java -server -Xbatch
result (with docID long):
old milliseconds=6938
old milliseconds=6953
old milliseconds=6890
old milliseconds=6938
old milliseconds=6906
old milliseconds=6922
old milliseconds=6906
old milliseconds=6938
old milliseconds=6906
old milliseconds=6906
old total milliseconds=69203
new milliseconds=5797
new milliseconds=5703
new milliseconds=5266
new milliseconds=5250
new milliseconds=5234
new milliseconds=5250
new milliseconds=5235
new milliseconds=5250
new milliseconds=5250
new milliseconds=5250
new total milliseconds=53485
New/Old Time 53485/69203 (77.28711%)
all in all, faster more than 22% !!
Of course, this type of benchmark does not mean all iterator ops in real life
are going to be 20% faster... other things probably dominate, but if it proves
that this test does not have some flaws (easy possible)... well worth of
pursuing
cheers, eks
> Allow Filter as clause to BooleanQuery
> --------------------------------------
>
> Key: LUCENE-1345
> URL: https://issues.apache.org/jira/browse/LUCENE-1345
> Project: Lucene - Java
> Issue Type: Improvement
> Components: Search
> Reporter: Paul Elschot
> Priority: Minor
> Attachments: DisjunctionDISI.patch, DisjunctionDISI.patch,
> LUCENE-1345.patch, TestIteratorPerf.java
>
>
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
