You are viewing a plain text version of this content. The canonical link for it is here.
Posted to issues@lucene.apache.org by "Adrien Grand (Jira)" <ji...@apache.org> on 2021/10/04 16:36:00 UTC
[jira] [Resolved] (LUCENE-10145) Use VarHandles to speedup byte[]
comparisons in some cases
[ https://issues.apache.org/jira/browse/LUCENE-10145?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Adrien Grand resolved LUCENE-10145.
-----------------------------------
Fix Version/s: main (9.0)
Resolution: Fixed
> Use VarHandles to speedup byte[] comparisons in some cases
> ----------------------------------------------------------
>
> Key: LUCENE-10145
> URL: https://issues.apache.org/jira/browse/LUCENE-10145
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Adrien Grand
> Priority: Minor
> Fix For: main (9.0)
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> I noticed that using Long#compareUnsigned on longs read via VarHandles is significantly faster than calling compareUnsigned directly. There are cases when this could be leveraged easily such as BKDWriter, which often keeps comparing 4-bytes or 8-bytes across byte[] arrays.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscribe@lucene.apache.org
For additional commands, e-mail: issues-help@lucene.apache.org