Investigate CPU increase for redis ratelimiting in k8s
During our production rollout to use redis ratelimiting in k8s, we discovered a significant increase in primary CPU usage between the primary ratelimiting on VMs and primary ratelimiting on k8s.
@igorwwwwwwwwwwwwwwwwwwww gathered some flamegraphs and data during the rollout and before we rolled back, which is linked on the production change request.
We do not have an option to increase the machine CPU usage as all of redis is currently using c2 family hosts.