eG Monitoring
 

Measures reported by RADLBVSStatTest

Each real server group is mapped to a virtual server. The virtual server receives incoming client requests , uses a load-balancing algorithm to select an available real server in the group, and routes the requests to the selected real server.

Since application requests are front-ended by a virtual server, tracking the session load on a virtual server will reveal the load on the applications running on the real servers mapped to that virtual server. This also means that if the virtual server experiences a processing bottleneck, it is bound to impact load distribution and processing by the real servers, which will consequently affect user experience with the applications in the backend. To understand the load on your applications and to proactively detect any potential slowness that your applications may experience, it is good practice to continuously monitor each virtual server. This is exactly what the Virtual Server test does!

This test auto-discovers the virtual servers that are mapped to real server groups. For each virtual server, the test then reports the session load on the server and the rate at which each server processes data. Additionally, the test also reports the count and names of real servers and server groups mapped to each virtual server. This way, you can figure out which are the applications load-balanced by the virtual servers, and will be impacted by performance issues in the virtual servers.

Outputs of the test : One set of results for the Radware Alteon load balancer being monitored.

The measures made by this test are as follows:

Measurement Description Measurement Unit Interpretation
groupCount Indicates the number of real server groups associated with this virtual server. Number Use the detailed diagnosis of this measure to know which groups and real servers are associated with the virtual server.
rsCount Indicates the number of real servers associated with this virtual server. Number Use the detailed diagnosis of this measure to know which groups and real servers are associated with the virtual server.
curSession Indicates the number of sessions currently handled by this virtual server. Number Compare the value of this measure across virtual servers to identify the server that is handling the maximum number of sessions.
totalSession Indicates the total number of sessions handled by this virtual server from the time it was started. Number  
transmitRate Indicates the rate at which data was handled by this virtual server. MB/Sec Compare the value of this measure across the virtual servers to know which server is the slowest in processing requests. Such a server could be experiencing a processing bottleneck. You may want to investigate the reasons for the slowness and fix it before it impacts load distribution and processing by the real servers.