Users By Countries - OS Test

Virtual Desktop Infrastructure (VDI) hosts desktop environments on a centralized server and deploys them to end-users on request. The virtual desktops in VDI are accessed by users from different cities, countries and regions of the world at any time. As VDI offers better user mobility, ease of access, flexibility and greater security, it is VDI administrator's responsibility to ensure a consistent experience for all users, regardless of their geographic location. When server resources are shared by users from multiple countries , excessive resource and bandwidth utilization by users from a specific country could impact the performance for users from other countries. Therefore, continuous monitoring of the activities of each and every country's users to the virtual desktops on the server is critical. Towards this end, the Users By Countries - OS test assesses the traffic between the virtual desktops on the server and the user terminals and reveals the experience of users from different countries.

This test continuously monitors the CPU and memory resources taken up by a user's session on the virtual desktop for each country. The results of this test can be used in troubleshooting and proactive monitoring. For example, when a user from a particular country reports a performance problem, administrators can quickly check the bandwidth utilized by that particular country's user, the CPU/memory usage as well as the resource usage of user sessions established from other countries. The administrator also has access to details on the number of application processes launched by the users from each country and time taken for the same. This information can be used to spot a particular country from which the maximum number of application processes are launched on the virtual desktop.

This test is disabled by default. To enable the test, go to the enable / disable tests page using the menu sequence : Agents -> Tests -> Enable/Disable, pick the desired Component type, set Performance as the Test type, choose the test from the disabled tests list, and click on the < button to move the test to the ENABLED TESTS list. Finally, click the Update button.

Target of the test : A Microsoft Hyper-V VDI server

Agent deploying the test : A remote agent

Outputs of the test : One set of results for each country from which users are logging in to a virtual desktop on the Microsoft Hyper-V VDI server.

Configurable parameters for the test
Parameters	Description
Test Period	How often should the test be executed. By default, this is 5 minutes.
Host	The host for which the test is to be configured.
Port	The port at which the specified Host listens. By default, this is NULL.

Measurements made by the test
Measurement	Description	Measurement Unit	Interpretation
User sessions	Indicates the total number of user sessions established from this country.	Number
CPU usage for user sessions	Indicates the percentage of CPU utilized during the user sessions established from this country.	Percent	A high value for this measure is a cause of concern. Comparing the value of this measure across countries helps administrators in identifying the country from which too much of CPU resources are being utilized.
Memory usage for user sessions	Indicates the percentage of memory utilized during the user sessions established from this country.	Percent	A high value for this measure is a cause of concern. Comparing the value of this measure across countries helps administrators in identifying the country from which too much of memory resources are being utilized.
I/O reads for user sessions	Indicates the rate of I/O reads done during all user sessions established from this country.	KB/sec	Comparison across the countries helps identify the country from which the most I/O-intensive operations are performed during user sessions.
I/O writes for user sessions	Indicates the rate of I/O writes done during all user sessions established from this country.	KB/sec
Total reads and writes for user sessions	Indicates the rate at which the I/O reads and writes done during all user sessions established from this country.	KB/sec
Screen refresh latency - avg	Indicates the average time interval measured at the client between the first step (user action) and the last step (graphical response displayed) of the user's interactions with this Virtual desktop. The value reported is the average of the latencies for all the current user sessions established from this country.	Seconds	This is a measurement of the screen lag that a user experiences while interacting with the virtual desktop. In other words, is the latency detected from when the user hits a key until the response is displayed. Comparing the value of this measure across users from different countries will enable administrators to quickly and accurately identify if the screen lag is significantly higher for any of the countries when users from that particular are interacting with the virtual desktop.
Screen refresh latency - max	Indicates the maximum time interval measured at the client between the first step (user action) and the last step (graphical response displayed) of the user's interactions with this virtual desktop during the sessions established from this country.	Seconds	Ideally, the value of this measure is preferred to be low.
Client network latency - avg	Indicates the average latency experienced by a user from this country when transmitting/receiving data over the ICA channel. The value reported is the average of the latencies for all the current user sessions established from this country.	Seconds	Ideally, the value of this measure is desired to be low.
Client network latency - max	Indicates the maximum latency experienced by a user from this country when transmitting/receiving data over the ICA channel.	Seconds	Ideally, the value of this measure is desired to be low.
Input bandwidth	Indicates the average bandwidth used for client to server communications for all the sessions of a user from this country.	Kbps
Output bandwidth	Indicates the average bandwidth used for server to client communications for all the sessions of a user from this country.	Kbps
Total bandwidth	Indicates the total bandwidth used for communication between the server and the client for all the sessions of a user from this country.	Kbps
Output bandwidth usage	Indicates the percentage of bandwidth used for server to client communications for all the sessions of a user from this country.	Percent	Compare the value of this measure across countries to know which country's users are consuming the maximum HDX bandwidth.
Frame rate	Indicates the rate at which frames are processed during user sessions established from this country.	Frames/sec	FPS is how fast your graphics card can output individual frames each second. It is the most time-tested and ideal measure of performance of a GPU. Higher the value of this measure, healthier is the GPU.
Framehawk frame rate	Indicates the rate at which frames are processed by the Framehawk virtual channel, if it is enabled for user sessions from this country.	Frames/sec	This is a good measure of the effectiveness of Framehawk in optimizing the bandwidth usage over the virtual delivery channel. A low value is desired for this measure. Note: This measure will report the value 0 if Framehawk is not enabled for a user from a country or if the device from which the user is accessing the application does not support Framehawk.
Framehawk latency	Indicates the latency experienced during user sessions established from this country when the Framehawk virtual delivery channel is used.	Seconds	This measure will report the value 0 if Framehawk is not enabled for a user from a country or if the device from which the user is accessing the application does not support Framehawk.
Total audio bandwidth	Indicates the total bandwidth used while transmitting and receiving sound/audio by users from this country.	Kbps	Comparing this value across countries will reveal which country's users are sending/receiving bandwidth-intensive sound/audio files over the ICA channel. To minimize bandwidth consumption, you may want to consider disabling client audio mapping.
Total HDX media stream for flash data bandwidth	Indicates the total bandwidth used for flash data traffic between users from this country and this virtual desktop.	Kbps
Total printer bandwidth	Indicates the total bandwidth used by a user from this country to issue print jobs to a desktop printer and receive response from the desktop over the ICA channel.	Kbps	Comparing the value of this measure across different countries will reveal which country's users are issuing bandwidth-intensive print commands over the channel. If bandwidth consumption is too high, you may want to consider disabling printing. Alternatively, you can avoid printing large documents.
Total application processes launch count	Indicates the count of application processes launched during the user sessions established from this country.	Number	By comparing the value of this measure across countries, administrators will be able to find out the country from which maximum number of application processes are launched.
Total application processes launch duration	Indicates the time taken for launching application processes during the user sessions established from this country.	Seconds	An unusually high value for this measure may require investigation.
Total user logons	Indicates the number of user logons from this country.	Number
Total user logon duration	Indicates the time that users from this country took to logon to the server.	Seconds	The value of this measure should be low.