eG Monitoring
 

Measures reported by VlbTest

The Voyager Load Balancer (VLB), along with the TP, shares the responsibility for session creation and management. This test reveals performance statistics pertaining to the VLB. The measures made by this test are as follows:

Measurement Description Measurement Unit Interpretation
Current_requests The number of requests executing in this VLB instance. A request consists of a call to the TP to execute but does not include CreateSession or DeleteSession Calls. It does include successful and failed calls. Number A sudden increase or a spike in this value is acceptable, but watch for any value that is consistently high. A consistently high or increasing value of this metric is an indicator of a problem. This value should correlate with the value of the Request_execution_time measure.
Create_session_calls The total number of CreateSession calls processed by all VLB's on this computer during the last measurement period. This includes both successful and failed calls. Number  
Create_session_failures The total number of failed Create Session calls by all VLB's during the last measurement period. "Failures" means an external error like an RPC network error. Number Watch for any increase in this value over time.
Execute_failures The total number of failed Execute calls by all VLBs on this computer during the last measurement period. This value does not include Create/DeleteSession. Number A very high value indicates a host server overload.
Request_count The total number of requests processed by all VLBs on this computer during the last measurement period. This value does not inlcude Create/Delete session. Number  
Request_execution_time The time it took to execute requests which completed in the past minute Secs After peak load this value should be stable, but watch for any value that is consistently high and increasing numbers after peak load. This value should correlate with the value of the Current_requests measure.