Polling regulation for storage input/output in a computer system

A non-transitory computer readable medium comprising instructions to be executed in a computing device to cause the computing device to carry out a method of input/output (IO) between system software executing in a computer and a storage device, comprising:

• sending, from the system software, IO commands to the storage device;
• handling, by the system software, IO completion messages from the storage device in an interrupt mode;
• determining, while processing the IO commands, a first value for a measure of IO operations per second (IOPs) of the storage device;
• determining, by a device driver of the system software, that a first condition is met, the first condition being that the measure of IOPs satisfies a threshold for enabling a polling mode;
• determining, by the device driver, that a second condition is met, the second condition being that a timer, which was previously started in the interrupt mode, has not expired;
• and
• maintaining, by the device driver, the interrupt mode in response to the second condition despite the first condition.

A computer system, comprising:

• a hardware platform comprising an interface to a storage device;
• system software, executing on the hardware platform, configured to:
• send IO commands to the storage device;
• handle IO completion messages from the storage device in an interrupt mode;
• determine, while processing the IO commands, a first value for a measure of IO operations per second (IOPs) of the storage device;
• determine that a first condition is met, the first condition being that the measure of IOPS satisfies a threshold for enabling a polling mode;
• determine that a second condition is met, the second condition being that a timer started in an interrupt mode has not expired;
• and
• maintain the interrupt mode in response to the second condition despite the first condition.