TCP/IP performance data
When the migration type is TCP/IP, TDMF collects additional information about the transfer to the remote system at the local session, or from the local system at the remote session.
The following table describes TCP/IP performance data.
| Field | Description |
|---|---|
| Total written to target (KB) | The amount of data that is transferred to the remote system for this volume. If the COMPRESS option was specified, this value represents the amount of data before compression. |
| Effective TCP/IP Data Rate (KB/sec) | The amount of uncompressed data (in KB) that was transferred, divided by the number of seconds required by the TCP/IP API routine to send the data (on the local system) or receive the data (on the remote system). Because the TCP/IP send and receive buffers are not infinite, some of this elapsed time includes writing the data to the target volume or reading the data from the source. |
| Data compression effective (%) | The approximate reduction in the amount of data that is transferred because the COMPRESS option was specified. |
The following figure shows an example of TCP/IP performance data.
TCP/IP Performance Data Cumulative Last Interval
Total written to target (KB): 1,444,771 614,089
Effective TCP/IP Data Rate (KB/sec): 24,762 36,812
Data compression effective (%): 37.3