I/O STACK MODELING FOR PROBLEM DIAGNOSIS AND OPTIMIZATION

摘要

An aspect includes input/output (I/O) stack modeling. A processor determines a client configuration of a client I/O stack that includes layers with configurable parameters to control storage and retrieval of data between an uppermost layer and lowest layer. A model of the client I/O stack is built on a layer basis that defines input workload characteristics, output workload characteristics, and layer configuration parameters for the layers of the model based on the client configuration. Workload characteristics of the uppermost layer of the client I/O stack are fed to the model. The processor determines a statistical distribution of workload characteristics associated with each of the layers of the client I/O stack. I/O performance results are captured for layers of the model based on feeding the workload characteristics of the uppermost layer.

主权项

1. A method for input/output (I/O) stack modeling, the method comprising:
determining, by a processor, a client configuration of a client I/O stack comprising a plurality of layers with configurable parameters to control storage and retrieval of data between an uppermost layer and a lowest layer; building a model of the client I/O stack on a layer basis that defines input workload characteristics, output workload characteristics, and layer configuration parameters for the layers of the model based on the client configuration; feeding a plurality of workload characteristics of the uppermost layer of the client I/O stack to the model; determining, by the processor, a statistical distribution of workload characteristics associated with each of the layers of the client I/O stack; and capturing I/O performance results for one or more layers of the model based on feeding the workload characteristics of the uppermost layer of the client I/O stack to the model.