# Amazon DCV server sessions
<a name="dcv-server-sessions"></a>

Counters in this set provide information about a single session. There's one instance of this counter set for each created session, whether a user is connected or not. 

If the administrator closes a session, the corresponding instance is removed; if the administrator re-creates a session with the same name, all the counters restart from zero.


| Counter name | Description | Unit | 
| --- | --- | --- | 
| Session Duration sec | Total number of seconds the session has been open | Seconds | 
| Total Pixels | Number of pixels in the display area, which is the sum of the number of pixels across all the displays in the session | Pixels | 
| Display Count | Number of displays in the session | Count | 

The following counters are the same as the ones in **Amazon DCV Server** counter set, with minor differences in the description:


| Counter name | Description | 
| --- | --- | 
| Active Connections | Number of active connections to the session instance | 
| Total Connections | Incrementing number of connections to the session instance, including active, reconnected and disconnected clients | 
| Idle Disconnections | Incrementing number of connections to the session instance that were disconnected because of inactivity | 
| Ungraceful Disconnections | Incrementing number of connections to the session instance that were disconnected because of an error | 
| Receive Rate bits/sec | Rate in bits per second at which data is received within the session | 
| Received Bytes | Total number of bytes received since session start | 
| Send Rate bits/sec | Rate in bits per second at which data is sent within the session | 
| Sent Bytes | Total number of bytes sent since session start | 
| HTTP Download Rate bits/sec | Bandwidth in bits per second for outgoing HTTP data within the session | 
| HTTP Downloaded Bytes | Total number of bytes sent over HTTP within the session | 
| Round-Trip Time ms | Average round-trip latency between server and clients within the session, in milliseconds | 
| Minimum Round-Trip Time ms | Minimum round-trip latency detected since the session was established, in milliseconds | 
| Total WebSocket Connections | Incrementing number of WebSocket connections to the server, including active, reconnected and disconnected clients. | 
| Active WebSocket Connections | Number of active WebSocket connections to the server. | 
| Total QUIC Connections | Incrementing number of QUIC connections to the server, including active, reconnected and disconnected clients. | 
| Active QUIC Connections | Number of active QUIC connections to the server. |