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Understanding Combined Metrics

Combined metrics are relative to application performance and consist of both server and network metrics.

Metric

Description

Data Transfer Time

Time it takes to transmit a complete response as measured from the initial to final packet in a response. Data Transfer Time excludes the initial server response time and includes only Network Round Trip Time if there is more data to send than fits in the TCP window.

Transaction Time

Time elapsed from the moment a client sends the request (packet-level or transaction-level) to the point when the client receives the last packet in the response. The management console shows this type of response time data in the summary Response Time Composition: Average view in the Engineering page.

You can set a threshold for a relative metric. The management console calculates average measurements of relative metrics over a 5-minute period to report baselines.

Note: Metric definitions differ for WAN-optimized transactions.