IMPLEMENTING DYNAMIC COST CALCULATION FOR SRIOV VIRTUAL FUNCTION (VF) IN CLOUD ENVIRONMENTS

• US 20170286145A1
• Filed: 04/01/2016
• Published: 10/05/2017
• Est. Priority Date: 04/01/2016
• Status: Active Grant

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Anand, Manu, Graham, Charles S., Schimke, Timothy J.
• Granted Patent: US 9,996,382 B2
• Time in Patent Office: Days
• CPC Class Codes: G06F 13/105 where the programme performs an input/output emulation function
• CPC Class Codes: G06F 13/387 for adaptation of different data processing systems to different peripheral devices, e.g. protocol converters for incompatible systems, open system
• CPC Class Codes: G06F 13/4282 on a serial bus, e.g. I2C bus, SPI bus on daisy chain buses G06F13/4247
• CPC Class Codes: G06F 2009/45579 I/O management, e.g. providing access to device drivers or storage
• CPC Class Codes: G06F 9/45558 Hypervisor-specific management and integration aspects

Abstract

A method, system and computer program product are provided for implementing dynamic cost calculation for a Single Root Input/Output Virtualization (SRIOV) virtual function (VF) in cloud environments. A management function periodically queries the SRIOV adapter for activity statistics for each assigned virtual function. The management function builds a usage heuristic based on the resource usage statistics. The management function calculates dynamic cost for the SRIOV VF based on the resource usage statistics. Calculated dynamic costs for the SRIOV VF are provided to a virtual function user and users are enabled to scale their VF resources. The VF resources are selectively scaled-up and scaled-down responsive to user input based upon VF resource usage.

Claims

1. A method for implementing dynamic cost calculation of a Single Root Input/Output Virtualization (SRIOV) virtual function in a SRIOV adapter in a virtualized system comprising:

enabling the virtual function (VF) to be dynamically resizable;

identifying SRIOV virtual function (VF) usage for the SRIOV virtual function (VF);

identifying dynamic cost for the SRIOV virtual function (VF) responsive to the identified SRIOV virtual function (VF) usage over a given time interval;

displaying a total cost for the SRIOV virtual function (VF) using a static cost and the identified dynamic cost for viewing by the virtual function (VF) user; and

generating a resize event responsive to user input to selectively scale VF resources based upon the identified SRIOV virtual function (VF) usage.

2. The method as recited in claim 1, includes providing the SRIOV adapter with a plurality of virtual functions (VFs) and providing a physical function (PF) with the Single Root Input/Output Virtualization (SRIOV) adapter, said physical function containing said plurality of virtual functions (VFs), and wherein said static cost of each of said plurality of virtual functions (VFs) includes a fixed cost for provisioning each said virtual function (VF) of a given bandwidth from the SRIOV adapter.

3. The method as recited in claim 1, wherein identifying SRIOV virtual function (VF) usage for the SRIOV virtual function (VF) includes providing a management function for periodically querying the SRIOV adapter for activity statistics for each SRIOV virtual function (VF) enabled to be resized, and calculating VF resource usage based on the activity statistics.

4. The method as recited in claim 3, wherein generating the resize event includes sending the resize event to both a physical function (PF) driver and a virtual function (VF) driver for the SRIOV virtual function (VF).

5. The method as recited in claim 1, wherein identifying SRIOV virtual function (VF) dynamic cost includes providing a management function for calculating dynamic SRIOV VF cost using identified usage statistics.

6. The method as recited in claim 1, wherein generating the resize event responsive to user input to selectively scale VF resources includes providing a management function for periodically querying the SRIOV adapter for activity statistics for each SRIOV virtual function (VF) enabled to be resized, calculating VF resource usage based on the activity statistics, and using the calculated VF resource usage to identify dynamic cost for the SRIOV virtual function (VF), and providing dynamic cost based scaling for SRIOV VF resources.

7. The method as recited in claim 6, providing a physical function (PF) adjunct for implementing an adapter specific interface to provide virtual function activity statistics.

8. The method as recited in claim 6, includes providing a hypervisor receiving the generated resized event generated by the management function, and the hypervisor sending the corresponding resize event to a hypervisor based physical function (PF) device driver and partition based virtual function (VF) device driver.

9. The method as recited in claim 1, includes providing a management function for implementing a user interface for displaying a total cost for the SRIOV virtual function (VF).

10. The method as recited in claim 7, includes providing a management function enabling a user to scale the SRIOV virtual function (VF) to selectively increase and decrease VF resources.

11. A system for implementing dynamic cost calculation of a Single Root Input/Output Virtualization (SRIOV) virtual function in a SRIOV adapter in a virtualized system comprising:

the SRIOV adapter comprising a plurality of virtual functions (VFs), and a physical function (PF) containing said plurality of virtual functions (VFs);

a processor;

a management function and a hypervisor managing functions associated with the SRIOV adapter including the SRIOV PF and VFs;

said processor using said management function and said hypervisor to perform the steps of;

enabling the virtual function (VF) to be dynamically resizable;

identifying SRIOV virtual function (VF) usage for the SRIOV virtual function (VF);

identifying dynamic cost for the SRIOV virtual function (VF) responsive to the identified SRIOV virtual function (VF) usage over a given time interval;

displaying a total cost for the SRIOV virtual function (VF) using a static cost and the identified dynamic cost for viewing by the virtual function (VF) user; and

generating a resize event responsive to user input to selectively scale VF resources based upon the identified SRIOV virtual function (VF) usage.

12. The system as recited in claim 11, wherein said management function and said hypervisor include control code tangibly embodied in a non-transitory machine readable medium used for implementing dynamic cost calculation of the SRIOV VF.

13. The system as recited in claim 11, wherein said static cost of each of said plurality of virtual functions (VFs) includes a fixed cost specified by said management function for provisioning each said virtual function (VF) of given bandwidth from the SRIOV adapter.

14. The system as recited in claim 11, wherein identifying SRIOV virtual function (VF) usage for the SRIOV virtual function (VF) includes said processor using said management function for periodically querying the SRIOV adapter for activity statistics for each SRIOV virtual function (VF) enabled to be resized, and calculating VF resource usage based on the activity statistics.

15. The system as recited in claim 11, wherein generating the resize event includes said processor using said hypervisor for sending the resize event to both a physical function (PF) driver and a virtual function (VF) driver for the SRIOV virtual function (VF) to be resized.

16. The system as recited in claim 11, wherein generating the resize event responsive to user input to selectively scale VF resources includes said processor using said management function for periodically querying the SRIOV adapter for activity statistics for each SRIOV virtual function (VF) enabled to be resized, calculating VF resource usage based on the activity statistics, and using the calculated VF resource usage to identify dynamic cost for the SRIOV virtual function (VF) over a given time interval.

17. The system as recited in claim 11, includes said processor using said management function for implementing a user interface for displaying a total cost for the SRIOV virtual function (VF).

18. The system as recited in claim 11, includes said processor using said management function for implementing selective scaling of VF resource usage responsive to user input to increase VF usage to handle extra loads during busy operation times and to scale down the VF usage during slow times based on running dynamic cost of the SRIOV VF.

19. The system as recited in claim 11, wherein identifying SRIOV virtual function (VF) usage for the SRIOV virtual function (VF) includes said processor using said management function and said hypervisor for determining SRIOV virtual function usage based on collecting adapter usage statistics for a plurality of resize pole intervals and averaging the collected usage statistics.

20. The system as recited in claim 11, wherein identifying dynamic cost for the SRIOV virtual function (VF) responsive to the identified SRIOV virtual function (VF) usage over a given time interval includes said processor using said management function and said hypervisor for determining dynamic cost based on averaging identified SRIOV virtual function usages over the given time interval.