# CycleStart Fields

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.runtime/orleans.runtime.diagnostics.activationrebalancerevents.cyclestart/)

## CycleNumber {#cyclenumber-f2f8d5b2}

[Dedicated page](/orleans/docs/api/csharp/microsoft.orleans.runtime/orleans.runtime.diagnostics.activationrebalancerevents.cyclestart/fields/cyclenumber-f2f8d5b2/)

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.Runtime/Diagnostics/ActivationRebalancerEvents.cs)

```csharp
public readonly int CycleNumber
```

The cycle number within the current session.