My team saw a 40% CPU usage increase on all of our EC2 instances and even our RDS instances. We were shocked since the media was downplaying the performance impact.
When I read this I thought how weird. It is usually claimed that max performance drop is around 30%. Then I remembered that we are talking in ratios, so a 30% drop in performance(0.7) means a 42% increase in CPU usage(1/0.7=1.42).
I tried to start a poll but it seems as though my team was just the unlucky one: https://news.ycombinator.com/item?id=16109036