International Business Machines Corporation
Load balancing based on utilization percentage of CPU cores

Abstract:

In an approach to storage level load balancing, the load level of a storage system is monitored, where the load level is a utilization percentage of a plurality of CPU cores in the storage system. An overload condition is detected based on the utilization percentage of one or more CPU cores exceeding a threshold, where the overload condition is caused by an overlap of one or more I/O queues from multiple host computers accessing a single CPU core. Responsive to detecting the overload condition, a new I/O queue is selected on a second CPU core, where the second CPU core has a utilization percentage less than a second threshold. A recommendation is sent to a host computer, where the recommendation is to move I/O traffic from the first CPU core to the new I/O queue on the second CPU core to rebalance the load level of the storage system.