[jira] [Commented] (ARROW-10544) [C++] Provide per-processor Executors to support pinning workflows to a core

["Ben Kietzman (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/ARROW-10544?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17229232#comment-17229232 ] 

Ben Kietzman commented on ARROW-10544:
--------------------------------------

[~wesm]

> [C++] Provide per-processor Executors to support pinning workflows to a core
> ----------------------------------------------------------------------------
>
>                 Key: ARROW-10544
>                 URL: https://issues.apache.org/jira/browse/ARROW-10544
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: C++
>    Affects Versions: 2.0.0
>            Reporter: Ben Kietzman
>            Priority: Major
>              Labels: compute
>
> For many workflows, there is a distinct performance advantage to avoiding transfer of a task between processors.  For example when iteratively processing a small dataset keeping everything local to a single CPU can avoid churn in split caches. Allowing each logical core to be accessible as an {{Executor}} would be one way to give developers the requisite control.



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