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Posted to issues@commons.apache.org by "Otmar Ertl (JIRA)" <ji...@apache.org> on 2014/11/21 23:04:34 UTC
[jira] [Updated] (MATH-990) Improve performance of
MathArrays.sortInPlace
[ https://issues.apache.org/jira/browse/MATH-990?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Otmar Ertl updated MATH-990:
----------------------------
Attachment: patch
The performance can be further improved while still using Collections.sort by avoiding the generic Pair class (see attached patch). A reduction of costs by a factor of 0.8 was observed in case of 2 parallel arrays.
> Improve performance of MathArrays.sortInPlace
> ---------------------------------------------
>
> Key: MATH-990
> URL: https://issues.apache.org/jira/browse/MATH-990
> Project: Commons Math
> Issue Type: Improvement
> Affects Versions: 3.2
> Reporter: Gilles
> Assignee: Gilles
> Priority: Minor
> Labels: benchmark
> Fix For: 4.0
>
> Attachments: patch
>
>
> Performance suffers from lots of copying.
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