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Forum Discussion

Mike_Harpe_6170's avatar
Mike_Harpe_6170
Icon for Nimbostratus rankNimbostratus
May 16, 2014

User wants perfect 'Round Robin' load distribution

I have a LTM VS with a pool of 40 nodes. The VS is doing SSL offload. The nodes consist of four IP addresses each serving 10 different TCP ports. The hardware is an active/standby pair of 8900s runni...
application delivery
design
devops
iRules
LTM
performance
What_Lies_Bene1's avatar
What_Lies_Bene1
Icon for Cirrostratus rankCirrostratus
May 16, 2014

I would suggest Least Connections would actually be better.

 

What you have to remember with Round Robin is that it doesn't take into account the length of a session. So, lets say you had three servers. Connection 1 to server 1 lasts 30 seconds, connection 2 to server 2 lasts 10 minutes, connection 3 to server three lasts 5. Connection 4 to server 1 lasts 29 seconds. Connection 5 to server 2 lasts 3 minutes.

 

After 1 minute server 1 has 0 connections, server 2 has 2, server 3 has 1.

 

Keep going and you can see how things get all uneven.