MANAGING STREAM COMPONENTS BASED ON VIRTUAL MACHINE PERFORMANCE ADJUSTMENTS

• US 20150254091A1
• Filed: 03/06/2014
• Published: 09/10/2015
• Est. Priority Date: 03/06/2014
• Status: Active Grant

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Cao, Bin, Eidem, Jessica R., Muras, Brian R., Sun, Jingdong
• Granted Patent: US 9,535,734 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 16/24568 Data stream processing; Continuous queries
• CPC Class Codes: G06F 2009/4557 Distribution of virtual machine instances; Migration and load balancing
• CPC Class Codes: G06F 2209/501 Performance criteria
• CPC Class Codes: G06F 8/61 Installation
• CPC Class Codes: G06F 9/45558 Hypervisor-specific management and integration aspects
• CPC Class Codes: G06F 9/4856 resumption being on a different machine, e.g. task migration, virtual machine migration G06F9/5088 takes precedence
• CPC Class Codes: G06F 9/50 Allocation of resources, e.g. of the central processing unit [CPU]
• CPC Class Codes: G06F 9/5027 the resource being a machine, e.g. CPUs, Servers, Terminals
• CPC Class Codes: G06F 9/5077 Logical partitioning of resources; Management or configuration of virtualized resources specific details on emulation or internal functioning of virtual machines G06F9/455
• CPC Class Codes: G06F 9/5094 where the allocation takes into account power or heat criteria power management in computers in general G06F1/3203; thermal management in computers in general G06F1/206
• CPC Class Codes: H04L 67/289 Intermediate processing functionally located close to the data consumer application, e.g. in same machine, in same home or in same sub-network

Abstract

Embodiments of the disclosure include a method, a system, and a computer program product for modifying a stream operator based on the virtual resources. The method includes receiving a first resource allocation and a second resource allocation of a virtual resource for a virtual machine supporting a stream computing application. The method also includes determining whether the second resource allocation changed within a tolerance relative to the first resource allocation. The method also includes identifying a stream operator in the stream computing application using the virtual resource of the virtual machine. The method also includes modifying the stream operator to accommodate the second resource allocation in response to the second resource allocation changing relative to the first resource allocation.

Claims

1. A method comprising:

receiving a first resource allocation and a second resource allocation of a virtual resource for a virtual machine supporting a stream computing application;

determining whether the second resource allocation changed within a tolerance relative to the first resource allocation;

identifying a stream operator in the stream computing application using the virtual resource of the virtual machine;

modifying the stream operator to accommodate the second resource allocation in response to the second resource allocation changing relative to the first resource allocation.

2. The method of claim 1, wherein identifying the stream operator includes:

identifying a plurality of stream operators;

prioritizing the plurality of stream operators to modify based on a utilization metric of the virtual resource; and

selecting the stream operator from the plurality of stream operators based on the priority.

3. The method of claim 1, further comprising:

determining whether a modification to the stream operator is adequate;

modifying the stream operator to accommodate the second resource allocation in response to the modification to the stream operator being inadequate.

4. The method of claim 3, wherein determining whether the modification is adequate includes:

measuring a utilization metric of the stream operator for the virtual resource; and

determining whether the utilization metric for the virtual resource is within a virtual resource range.

5. The method of claim 1, wherein modifying the stream operator includes:

selecting a function on the stream operator to modify based on the change, wherein the function affects the virtual resource.

6. The method of claim 1, wherein determining whether the second resource allocation changed includes:

determining whether the second resource allocation provides more virtual resources than the first resource allocation.

7. The method of claim 1, wherein modifying the stream operator includes:

improving a function on the stream operator to an amount accommodated by the second resource allocation.

8. The method of claim 1, wherein determining whether the second resource allocation changed includes:

determining whether the second resource allocation provides fewer virtual resources than the first resource allocation.

9. The method of claim 1, wherein modifying the stream operator includes:

reducing a function on the stream operator to an amount accommodated by the second resource allocation.

10-20. -20. (canceled)