Hi,
We have EP 7 installed in our environment. The Portal has a Central Instance and two dialog instances. We are using NetScaler 7 as a load balancer. Our load balancer is currently configured with a weighted round-robin of 3:3:1. For all requests, 3 connections are set to each of the dialog instance with only 1 connection sent to the central instance.
We have recently received a monitoring report which indicates that, despite the load balancing configurations, one of the dialog instance (DI1) is having a higher CPU load. We assume this means that more requests are being sent to one particular instance. Comparing this report with the past reports we have received, this particular instance has been consistently getting higher CPU loads, which is puzzling. The dialog instances in our Portal setup do not do anything else, other than serving Portal requests. In other words, no third party applications are installed on these servers. We do not know why this particular instance is having a higher CPU load. Is there anything that we can do to find out why this instance keeps having a higher CPU load? Is there something we should be doing at the load balancer's end?
On a different note, the other dialog instance (DI2) is having high paging activities. From one of the posts in the forums, it seems to indicate that the high paging might be an indication that the Portal is undergoing some garbage collection activities. However, it does not make sense that only ONE instance is having high paging if garbage collection is carried out on. How is it that the rest of the instances are not having high paging issues? Has anyone come across this situation? What should we do to find out what is going on behind the screens?
Any suggestions/advice would be much appreciated.
Thank You.