| Measurement |
Description |
Measurement
Unit |
Interpretation |
| In_connection_rate |
Connections
per second received by the server |
Conns/Sec |
A
high value can indicate an increase in input load.
|
| Out_connection_rate |
Connections
per second initiated by the server
|
Conns/Sec |
A
high value can indicate that one or more applications executing on the
host have started using a number of TCP connections to some other
host(s).
|
| Connection_failure_rate |
Rate
of half open TCP connections dropped from the listen queue |
Conns/Sec |
This
value should be 0 for most of the time. A prolonged non-zero value can
indicate either that the server is under SYN attack or that there is a
problem with the network link to the server that is resulting in
connections being dropped without completion.
|
| Current_connections |
Currently
established connections |
Number |
A
sudden increase in the number of connections established on a host can
indicate either an increase in load to one or more of the applications
executing on the host, or that one or more of the applications are
experiencing a problem (e.g., a slow down).
|
| In_segment_rate |
The
total number of segments received, including those received with
errors. This count includes segments received on currently established
connections |
Segments/Sec |
|
| Out_segment_rate |
The
total number of segments sent, including those on current connections
but excluding those containing only retransmitted octets. |
Segments/Sec |
|
| Retransmission_rate |
The
total number of segments retransmitted – that is, the number of TCP
segments transmitted containing one or more previously transmitted
octets. |
Segments/Sec |
|