# How are the `Operators` Executed? (Continue...)

+ `PD` sends operator steps in sequence
+ `Store` updates progress by reporting `region` heartbeats
+ Focus on execution time of steps
  + Transfer `leader` usually less than 1 seconds
  + Move `peer` usually less than 10 seconds
![`smart`](OperatorRunning_aa_001_20221024.png)
![`smart`](OperatorCountStepDuration_aa_001_20221024.png)

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