Calculations of total supply chain response time involves following factors
1. Forecast Cycle Time
2. Intra manufacturing Re-Plan Cycle Time
3. Re-Plan Cycle time
4. Market Cycle time
5. Order fulfillment lead time
Sometimes minimum change in market demand is defined against which supply chain response time is measured. Generally it is measured against 20% change in market demand.
Responsiveness of supply chain can depend on many factors such as size of supply chain, number of components involved, flexibility of producer & distributor, Bottlenecks if any, alternatives to each activity or each path etc.