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Posted to commits@airflow.apache.org by "Ash Berlin-Taylor (JIRA)" <ji...@apache.org> on 2018/01/25 09:41:00 UTC

[jira] [Commented] (AIRFLOW-2027) Remove unnecessary 1s sleep in scheduler loop

    [ https://issues.apache.org/jira/browse/AIRFLOW-2027?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16338996#comment-16338996 ] 

Ash Berlin-Taylor commented on AIRFLOW-2027:
--------------------------------------------

Would removing this sleep not also significantly increase the CPU load of the scheduler by putting it in a busy loop?

> Remove unnecessary 1s sleep in scheduler loop
> ---------------------------------------------
>
>                 Key: AIRFLOW-2027
>                 URL: https://issues.apache.org/jira/browse/AIRFLOW-2027
>             Project: Apache Airflow
>          Issue Type: Improvement
>          Components: scheduler
>            Reporter: Dan Davydov
>            Assignee: Dan Davydov
>            Priority: Major
>
> The scheduler loop sleeps for 1 second every loop unnecessarily. Remove this sleep to slightly speed up scheduling. It can add up since it runs to every scheduler loop which runs # of dags to parse/scheduler parallelism times.
>  
> Also remove the unnecessary increased file processing interval in tests which slows them down.



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