I think it really has more to do with a lack of spare capacity - each server is ...

brown9-2 on March 13, 2013 | parent | context | favorite | on: How We Went from 30 Servers to 2: Go

I think it really has more to do with a lack of spare capacity - each server is so maxed out that it can't handle a 1/n increase in load when one server goes away.