The OS Load: Average column displays the average amount of processes using or waiting for CPU on your node over a period of time.

Average OS load larger than the number of cores indicates that the CPU was temporarily overloaded and reached the limits of its processing capacity. If you are experiencing consistently high OS load and not reaching the desired throughput on your cluster, you may need to tune your data model or add nodes to your cluster to increase processing capacity. Contact [email protected] if you need further assistance in dealing with OS load issues.