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Posted to jira@arrow.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2021/10/19 06:17:00 UTC

[jira] [Updated] (ARROW-14341) [C++] Refine decimal benchmark

     [ https://issues.apache.org/jira/browse/ARROW-14341?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated ARROW-14341:
-----------------------------------
    Labels: pull-request-available  (was: )

> [C++] Refine decimal benchmark
> ------------------------------
>
>                 Key: ARROW-14341
>                 URL: https://issues.apache.org/jira/browse/ARROW-14341
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: C++
>            Reporter: Yibo Cai
>            Assignee: Yibo Cai
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> Decimal benchmark mixes {{+-*/}} operations in one test loop[1]. Divide always dominates the result. It's ~6x slower than multiplication, let alone addition.
> It's better to test division, multiplication, addition/subtraction separately to get more reasonable results.
> [1] https://github.com/apache/arrow/blob/master/cpp/src/arrow/util/decimal_benchmark.cc#L141-L145



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