Load is high for shared runners manager 3 and 4
It seems every instance of docker-machine consumes about 5% of CPU. Why so high? There are about 500 instances being managed by each.
top says:
top - 18:20:37 up 4 days, 22:59, 1 user, load average: 410.10, 327.09, 266.35
/cc: @ahanselka, @ayufan