[
https://issues.apache.org/jira/browse/LUCENE-5266?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13791591#comment-13791591
]
Michael McCandless commented on LUCENE-5266:
--------------------------------------------
I tested Ryan's patch with Karl's float benchmark (but first I switched it to
use MMapDir).
Before (4.x):
{noformat}
Scoring 25000000 documents with a lucene value (without square root) source
took 1361
Scoring 25000000 documents with a lucene value (without square root) source
took 1344
Scoring 25000000 documents with a lucene value (without square root) source
took 1338
Scoring 25000000 documents with a lucene value (without square root) source
took 1373
Scoring 25000000 documents with a lucene value (without square root) source
took 1344
{noformat}
With Ryan's patch:
{noformat}
Scoring 25000000 documents with a lucene value (without square root) source
took 1116
Scoring 25000000 documents with a lucene value (without square root) source
took 1088
Scoring 25000000 documents with a lucene value (without square root) source
took 1086
Scoring 25000000 documents with a lucene value (without square root) source
took 1086
Scoring 25000000 documents with a lucene value (without square root) source
took 1089
{noformat}
It's just a micro-benchmark but it looks like a nice speedup!
> Optimization of the direct PackedInts readers
> ---------------------------------------------
>
> Key: LUCENE-5266
> URL: https://issues.apache.org/jira/browse/LUCENE-5266
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Adrien Grand
> Assignee: Adrien Grand
> Priority: Minor
> Attachments: LUCENE-5266.patch, LUCENE-5266.patch
>
>
> Given that the initial focus for PackedInts readers was more on in-memory
> readers (for storing stuff like the mapping from old to new doc IDs at
> merging time), I never spent time trying to optimize the direct readers
> although it could be beneficial now that they are used for disk-based doc
> values.
--
This message was sent by Atlassian JIRA
(v6.1#6144)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
