# GGSN PSD Statistics

## Navigation

1. Right-click the device, and select Monitor. The Monitor Device dialog box appears.

2. Select GGSN PSD Statistics from the Category list.

The following information appears:

> Write Data Record Transfer Request (cPsdClientDSWriteReq)

> Read Data Record Transfer Request (cPsdClientDSReadReq)

> Retransmission Data Record Transfer Request (cPsdClientDSRdWrRetrans)

> State Transitions (cPsdClientDSDiskFullTrans)

### Write Data Record Transfer Request (cPsdClientDSWriteReq)

The number of Data Record Transfer request (for write) messages sent to the PSD server. This counter is incremented when the FIFO write request is sent to the PSD server from the client.

### Read Data Record Transfer Request (cPsdClientDSReadReq)

The number of Data Record Transfer request (for read) messages sent to the PSD server. This counter is incremented when the FIFO read request message is sent to the PSD server.

### Retransmission Data Record Transfer Request (cPsdClientDSRdWrRetrans)

The number of Data Record Transfer Request (retransmission) messages sent to the PSD server. The PSD does not differentiate between a retransmission and an original request. This counter and the two previous counters (cPsdClientDSReadReq and cPsdClientDSWriteReq) can be used to tally the number of messages received by the PSD client.

This counter is incremented when FIFO read/write retransmission messages are sent to the PSD server.

### State Transitions (cPsdClientDSDiskFullTrans)

The number of state transitions made by the PSD from state 'disk available' to 'disk full'. This counter is incremented when the client receives the disk full indication from the PSD server.