eG Monitoring
 

Measures reported by WVDTcpTest

This test tracks various statistics pertaining to TCP connections to and from the chosen Session Host / Azure Virtual desktop. The details of the test are provided below:

Outputs of the test : One set of results for each type of TCP connection handled by the chosen Session Host / Azure Virtual Desktop.

The measures made by this test are as follows:

Measurement Description Measurement Unit Interpretation
In_connection_rate Indicates the connections per second received by the virtual desktop. Conns/Sec A high value can indicate an increase in input load.
Out_connection_rate Indicates the connections per second initiated by the virtual desktop. Conns/Sec A high value can indicate that the virtual desktop has started using a number of TCP connections to some other VM or host.
Current_connections Indicates the currently established connections. Number A sudden increase in the number of connections established on a virtual desktop can indicate either an increase in load to one or more of the applications executing on the desktop, or that one or more of the applications are experiencing a problem (e.g., a slow down). On Microsoft Windows, the current connections metrics is the total number of TCP connections that are currently in the ESTABLISHED or CLOSE_WAIT states.
Connection_drop_rate Indicates the rate of established TCP connections dropped from the TCP listen queue. Conns/Sec This value should be 0 for most of the time. Any non-zero value implies that one or more applications on the desktop are under overload.
Connection_failure_rate Indicates the 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 desktop is under SYN attack or that there is a problem with the network link to the desktop that is resulting in connections being dropped without completion.