Look at your traffic logs. Is your growth linear (1, 2, 3...) or exponential (10, 100, 1000...)? If it's the latter, linear load sharing will eventually crash your smaller nodes.
Use log10 to visualize your metrics. Often, a logarithmic graph of load sharing provides a much clearer picture of system health than a standard bar chart. Conclusion log10 loadshare
Understanding log10 loadshare : The Key to Balancing Massive Network Traffic Look at your traffic logs
By using a log10 scale, a load balancer can compress a massive range of input values into a smaller, more stable range of output weights. 3...) or exponential (10