Measures reported by VmgEDTTest
Adaptive Transport - a new transport mechanism for virtual servers is faster, reliable and more scalable, and improves application interactivity and quickly delivers HDX content to users on long-haul WAN and Internet over UDP or TCP. While TCP is a default choice for HDX content delivery, Adaptive Transport uses an enhanced version of UDP as the primary data transport protocol i.e., Enlightened Data Transport (EDT) protocol to overcome shortfalls of TCP. This mechanism has been built with the intelligence to automatically understand network conditions and react to changes dynamically. Based on dynamic determination of conditions where TCP would perform better, or should the network not support UDP, or in the event of an EDT failure, the ICA virtual channels intelligently switch from EDT to TCP automatically. Automatic fallback to TCP ensures that there is no connection timeout, faster and uninterrupted session connectivity for the users on WAN and increased session reliability. These benefits make the EDT a standard data transport protocol for HDX content delivery in the virtual environments. With such great user impact, monitoring the performance of sessions that are established via EDT becomes inevitable for administrators. Before a user complains about a problem on an EDT session, administrators need to have the capability to continuously monitor EDT performance and connectivity, and isolate bottlenecks for proactive troubleshooting. This is where the VmgEDTTest test helps!
This test auto-discovers the virtual desktop user sessions that use the EDT protocol, and reports the bandwidth usage, network traffic, and latency of each such session. Using these performance metrics, administrators can measure the experience of users connected over EDT, and accurately isolate bandwidth-hungry and latent user sessions.
Note:
This test will report metrics only if the following configuration is available in the environment:
XenApp and XenDesktop 7.13 and above VDA for Desktop OS 7.13 and above VDA for Server OS 7.13 and above StoreFront 3.9 and above Citrix Receiver for Windows 4.7 and above Citrix Receiver for Mac 12.5 and above Citrix Receiver for iOS 7.2 and above IPv4 VDAs only. IPv6 and mixed IPv6 and IPv4 configurations are not supported. NetScaler 11.1-51.21
Outputs of the test : ne set of results for every user who is currently connected to the virtual server via the EDT protocol.
| Measurement |
Description |
Measurement Unit |
Interpretation |
| No_of_sessions |
Indicates the number of sessions intiated by this user. |
Number |
The value 0 indicates that the user is not currently connected to the Citrix server. |
| Bandwidth |
Indicates the bandwidth usage of all sessions of this user. |
Kbps |
Compare the value of this measure across users to know which user is consuming the maximum bandwidth. |
| Round_trip_time |
Indicates the round trip latency between the virtual machine and this user. |
Seconds |
Comparing the value of this measure across users will enable administrators to quickly and accurately identify users who are experiencing higher latency when connecting to a virtual machine via EDT protocol. |
| Flow_window |
Indicates the size of the flow window. |
KB |
The flow window and congestion window are used to control the congestion in the network. The smaller the value of both the windows, the data will be sent without any delay. The larger the value, the data will be added up in the sent queue and it will be sent with delay. |
| Congession_window |
Indicates the size of the congestion window. |
KB |
| Sent_data |
Indicates the number of EDT packets sent by this user. |
Packets |
|
| Received_data |
Indicates the number of EDT packets received by this user. |
Packets |
|
| Retransmitted_data |
Indicates the number of EDT packets that were retransmitted by the user. |
Packets |
|
| Sent_lost |
Indicates the number of packets lost by this user during transmission. |
Packets |
Ideally, the value of this measure should be zero.
Comparing the value of these measures across users will enable administrators to quickly and accurately identify users who have extensively lost packets during transmission and reception of packets via EDT protocol. |
| Received_lost |
Indicates the number of packets lost by this user during reception. |
Packets |
| Sent_Acks |
Indicates the number of acknowledgements that were received by this user for sending the EDT packets. |
Number |
|
| Sent_Nak |
Indicates the number of negative acknowledgements that were received by this user for sending the EDT packets. |
Number |
|
| Rcvd_Acks |
Indicates the number of acknowledgements that were received by this user for reception of EDT packets. |
Number |
|
| Rcvd_Nak |
Indicates the number of negative acknowledgements that were received by this user for reception of EDT packets. |
Number |
|
|