Adjusting a dispatch ratio for multiple queues

A computer system, comprising:

• one or more processors, one or more computer-readable memories and one or more computer-readable, tangible storage devices;
• and
• program instructions, stored on at least one of the one or more computer-readable, tangible storage devices for execution by at least one of the one or more processors via at least one of the one or more memories, to perform operations, the operations comprising:
• setting a dispatch ratio for each queue of a plurality of queues, wherein each of the plurality of queues has an associated priority;
• tracking a number of Central Processing Unit (CPU) cycles used by tasks from each of the plurality of queues during an interval;
• determining a CPU high percentage that indicates a percentage of CPU cycles used by high priority tasks in a high priority queue of the plurality of queues during the interval;
• in response to determining that the CPU high percentage is below a high threshold, calculating a new dispatch ratio that indicates an increased number of high priority tasks are to be dispatched from the high priority queue, and wherein the new dispatch ratio is based on the CPU high percentage, the high threshold, and a current dispatches high value;
• and
• dispatching the increased number of high priority tasks from the high priority queue based on the new dispatch ratio during a new interval.

A computer-implemented method, comprising:

• setting a dispatch ratio for each queue of a plurality of queues, wherein each of the plurality of queues has an associated priority;
• tracking a number of Central Processing Unit (CPU) cycles used by tasks from each of the plurality of queues during an interval;
• determining a CPU high percentage that indicates a percentage of CPU cycles used by high priority tasks in a high priority queue of the plurality of queues during the interval;
• in response to determining that the CPU high percentage is below a high threshold, calculating a new dispatch ratio that indicates an increased number of high priority tasks are to be dispatched from the high priority queue, and wherein the new dispatch ratio is based on the CPU high percentage, the high threshold, and a current dispatches high value;
• and
• dispatching the increased number of high priority tasks from the high priority queue based on the new dispatch ratio during a new interval.