Right-sizing resource requests by applications in dynamically scalable computing environments

A data processing system comprising at least one processor and memory coupled to the at least one processor, wherein the memory contains instructions which, when implemented by the at least one processor, cause the at least one processor to perform a method comprising:

• monitoring, by a computer system, resource usage of at least one computer resource by an application executing in the dynamically scalable computing environment;
• monitoring, by the computer system, resource requests for the at least one computer resource associated with the application;
• determining, by the computer system, for the at least one computer resource, a resource usage upper bound associated with the application;
• testing, by the computer system, the resource usage upper bound against at least one threshold;
• determining, by the computer system, from the testing, a resource request adjustment;
• and
• the computer system dynamically applying the resource request adjustment to the resource requests for the at least one computer resource associated with the application;
• wherein determining, for the at least one computer resource, a resource usage upper bound associated with the application comprises:
• testing whether, during a predetermined time period, there have been a predetermined number of instances where the resource usage has exceeded a mean of the resource usage of the computer resource by the application plus a predetermined number of standard deviations of the resource usage of the computer resource by the application;
• responsive to a determination that there have been a predetermined number of instances where the resource usage has exceeded a mean of the resource usage of the computer resource by the application plus a predetermined number of standard deviations of the resource usage of the computer resource by the application, setting the resource usage upper bound to a first predetermined percentage of a maximum resource usage of the computer resource by the application;
• and
• responsive to a determination that there have not been a predetermined number of instances where the resource usage of the computer resource by the application has exceeded a mean of the resource usage of the computer resource by the application plus a predetermined number of standard deviations of the resource usage of the computer resource by the application, setting the resource usage upper bound to a second predetermined percentage of the mean of the resource usage of the computer resource by the application.

A tangible, non-transitory computer-readable medium embodying instructions which, when implemented by at least one processor, cause the at least one processor to perform a method comprising:

• monitoring, by a computer system, resource usage of at least one computer resource by an application executing in the dynamically scalable computing environment;
• monitoring, by the computer system, resource requests for the at least one computer resource associated with the application;
• determining, by the computer system, for the at least one computer resource, a resource usage upper bound associated with the application;
• testing, by the computer system, the resource usage upper bound against at least one threshold;
• determining, by the computer system, from the testing, a resource request adjustment;
• and
• the computer system dynamically applying the resource request adjustment to the resource requests for the at least one computer resource associated with the application;
• wherein determining, for the at least one computer resource, a resource usage upper bound associated with the application comprises:
• testing whether, during a predetermined time period, there have been a predetermined number of instances where the resource usage has exceeded a mean of the resource usage of the computer resource by the application plus a predetermined number of standard deviations of the resource usage of the computer resource by the application;
• responsive to a determination that there have been a predetermined number of instances where the resource usage has exceeded a mean of the resource usage of the computer resource by the application plus a predetermined number of standard deviations of the resource usage of the computer resource by the application, setting the resource usage upper bound to a first predetermined percentage of a maximum resource usage of the computer resource by the application;
• and
• responsive to a determination that there have not been a predetermined number of instances where the resource usage of the computer resource by the application has exceeded a mean of the resource usage of the computer resource by the application plus a predetermined number of standard deviations of the resource usage of the computer resource by the application, setting the resource usage upper bound to a second predetermined percentage of the mean of the resource usage of the computer resource by the application.