Patent ID: 6879939
Filing Date: 2005-04-12
Classification: G01R

Abstract:
1. A computer-implemented method for controlling a distribution of sizes of input/output (I/O) operations in testing a data processing system, comprising: instantiating a plurality of sets of distribution parameter values, wherein the values in each set define a distribution that is unique relative to the other sets of values; issuing a plurality of I/O operations of different sizes in response to one of the sets of distribution parameter values, wherein each distribution parameter value specifies a number of I/O operations to issue for one or more sizes of I/O operations; verifying correct completion of the I/O operations; measuring performance characteristics of the data processing system while issuing the I/O operations; and selectively adjusting, in response to the performance characteristics relative to target performance characteristics, the distribution parameter values, the selective adjustment including selecting one of the sets of distribution parameter values in response to the performance characteristics relative to target performance characteristics.