The customer changed the load balancing method to Round Robin and they're still not satisfied. I attached vServer and servicegroup configuration, connection count at vServer as well as two graphs taken from APM tool, one of them shows the number of connection requests to the servers and the other one shows the number of active connections at the servers. Connection multiplexing is not in use which is obvious when comparing the "Current Client Connections" and "Current Server Connections" at vServer statistics as these values are identical for each service bound to the vServer.
First, since I noticed that the current configuration method is Round Robin becasue "Bound service's state changed to UP" when looking into the vServer configuration, I thought it might be cause of Slow-Start mode, by which NetScaler protects newly enabled or up servers from a possible overhead, but then I found that it's not the root cause as servers' state does not change so often for Slow-Start Mode to switch the load balancing method from configured one to Round Robin.Īnyway, although least connection method is configured, we observe that some servers have 11 connections whereas some of them have 3 so there is always a huge gap between the server that has the most connection and the server that has the least connection. I have a customer complaining that least connection load balancing method does not work as it is supposed to.
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