[
https://issues.apache.org/jira/browse/LUCENE-10145?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17424027#comment-17424027
]
Uwe Schindler commented on LUCENE-10145:
----------------------------------------
This is only single long/int comparisons where you are asking about? Because if
you compare byte[] using Arrays.compate, the underlying impl already bulks by
long/int if possible when it calls Unsafe.compareMemory().
> 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: 40m
> 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: [email protected]
For additional commands, e-mail: [email protected]
