vitaly-krugl opened a new issue #12348:
URL: https://github.com/apache/airflow/issues/12348


   Regarding the FAQ note "How to reduce airflow dag scheduling latency in 
production" -
   Per 
https://github.com/apache/airflow/blame/f097ae39a7243bd25d4d26664bc259981b2ba217/docs/faq.rst#L209:
   > User should consider to increase ``scheduler_heartbeat_sec`` config to a 
higher value (e.g 60 secs) which controls how frequent the airflow scheduler 
gets the heartbeat and updates the job's entry in database.
   
   However, since `scheduler_heartbeat_sec` is used as a duration (not as 
heartbeats/sec rate), increasing it to 60 (from the default 5 sec) would 
actually cause scheduling to become more sluggish, thus increasing latency.
   


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