| Measurement |
Description |
Measurement
Unit |
Interpretation |
| Server_connections |
The number of server connections in the NetScaler device |
Number |
|
| Client_connections |
The number of client connections in the NetScaler device
|
Number |
|
| Conns_serving_requests |
The number of connections to the Netscaler device that are
currently serving requests |
Number |
This metric is a key indicator of the workload handled by
the Netscaler device. |
| Established_server_conns |
The number of server connections in NetScaler in established state |
Number |
|
| Established_client_conns |
The number of client connections in NetScaler in established state |
Number |
|
| Spare_connections |
The number of spare connections ready to be used |
Number |
|
| Surge_queue_length |
The number of connections in surge queue |
Number |
The Netscaler device can be used to limit the number of simultaneous requests that
are passed on to a server. When a request is completed, additional requests are
forwarded to the server. If a request arrives and the server is handling the maximum
configured number of requests, the Netscaler device places the new request in a surge
queue, where the request waits for its turn to be sent to the server for processing.
The surge queue allows a server to run at peak capacity
without the risk of having it spiral out of control because of a surge of incoming requests.
The surge queue length indicates whether a server is able to keep up with its incoming
workload or not. If the surge queue is consistently greater than 0, this indicates
that the server is not able to keep up with the workload and additional server capacity
is required. On the other hand, a periodic surge is not a cause for concern.
|
| Server_conns_opened |
The total number of opened server connections |
Number |
|
| Client_conns_opened |
The total number of opened client connections |
Number |
|
| Data_received |
The TCP traffic received during the last measurement period |
MB/Sec |
|
| Data_transmitted |
The TCP traffic transmitted during the last measurement period |
MB/Sec |
|
| Connection_timeouts |
The number of times connection establishment timed out during the
last measurement period |
Number |
|
| Connection_retries |
The number of times TCP connection established was retried during the
last measurement period |
Number |
|
| Client_retransmits |
The number of retranmissions from clients during the last measurement period
|
Number |
Ideally, the number of retransmissions should be a small fraction (< 5%)
of the total number of transmissions. |
| Server_retransmits |
The number of retranmissions from servers during the last measurement period
|
Number |
Ideally, the number of retransmissions should be a small fraction (< 5%)
of the total number of transmissions. |
| Retransmits_sent |
The number of retranmissions sent during the last measurement period
|
Number |
|
| Retransmit_failures |
The number of retranmission failures during the last measurement period
|
Number |
|