On the local machine, I am running multiple pods at the same time. It takes a lot of time to complete even though all the pods achieve the running state almost instantly. Internally i am running a docker image (1.8GB) on each pod. When i run pods on serial order, it takes around 12 sec/pod run but running parallely, the time increases exponentially not even at least the same as serial. What could be the probable cause for this?

EDIT 1

The operation is really cpu intensive, reaching above 90%. Is there a way to queue pods as they come for cpu resources, so that instead of all slowing down, each of them execute fast in a queue.