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https://issues.apache.org/jira/browse/AIRFLOW-2027?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16338996#comment-16338996
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Ash Berlin-Taylor commented on AIRFLOW-2027:
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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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