Re: [D] High CPU and database load caused by Airflow 3 dag-processor and scheduler [airflow]

Fri, 11 Jul 2025 11:18:20 -0700 


GitHub user michaelosthege added a comment to the discussion: High CPU and 
database load caused by Airflow 3 dag-processor and scheduler

Looks like you have to right-click & Save As the flame graphs to get the SVG.

Here's the scheduler at 1s idle sleep:

![scheduler](https://github.com/user-attachments/assets/116da752-347c-411b-acac-33c4ffb8129d)

And 15s idle sleep (still just 7 % in the `time.sleep` and PostgreSQL CPU only 
went down by 50 %)

![scheduler_15s](https://github.com/user-attachments/assets/62a8a29d-1d02-4b11-bf10-8a3ebfa44a07)



GitHub link: 
https://github.com/apache/airflow/discussions/53177#discussioncomment-13734587

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