Statistic	Scope	Description
Comm: Bytes Received/sec	Connection, database, and server	Shows the rate at which network data (in bytes) are received.
Comm: Bytes Received Uncompressed/sec	Connection, database, and server	Shows the rate at which bytes would have been received if compression was disabled.
Comm: Bytes Sent/sec	Connection, database, and server	Shows the rate at which bytes are transmitted over the network.
Comm: Bytes Sent Uncompressed/sec	Connection, database, and server	Shows the rate at which bytes would have been sent if compression was disabled.
Comm: Free Buffers	Server	Shows the number of free network buffers.
Comm: Multi-packets Received/sec	Server	Shows the rate at which multi-packet deliveries are received.
Comm: Multi-packets Sent/sec	Server	Shows the rate at which multi-packet deliveries are transmitted.
Comm: Packets Received/sec	Connection, database, and server	Shows the rate at which network packets are received.
Comm: Packets Received Uncompressed/sec	Connection, database, and server	Shows the rate at which network packets would have been received if compression was disabled.
Comm: Packets Sent/sec	Connection, database, and server	Shows the rate at which network packets are transmitted.
Comm: Packets Sent Uncompressed/sec	Connection, database, and server	Shows the rate at which network packets would have been transmitted if compression was disabled.
Comm: Remoteput Waits/sec	Server	Shows the rate at which the communication link must wait because it does not have buffers available to send information. This statistic is collected for TCP/IP only.
Comm: Requests Received	Connection, database, and server	Shows the number of client/server communication requests or round-trips. It is different from the Comm: Packets Received statistic in that multi-packet requests count as one request, and liveness packets are not included.
Comm: Send Fails/sec	Server	Shows the rate at which the underlying protocol(s) failed to send a packet.
Comm: Total Buffers	Server	Shows the total number of network buffers.
Comm: Unique Client Addresses	Server	Shows the number of unique client network addresses connected to the database server. This is usually the number of client machines connected, and may be less than the total number of connections.