Deduplicated caching of queries for green IT management

• US 8,515,922 B2
• Filed: 06/17/2011
• Issued: 08/20/2013
• Est. Priority Date: 06/17/2011
• Status: Expired due to Fees

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Acuna, Jorge D., Bavishi, Pankaj S., Routray, Ramani R., Shah, Dhaval K.
• Primary Examiner(s): Fleurantin, Jean B
• Application Number:
  US13/162,847
• Publication Number:
  US 20120323861A1
• Time in Patent Office: 795 Days
• Field of Search: 707662-664, 707/692, 711/118, 711/122, 711/125, 711/126, 711/133
• US Class Current: 707/692
• CPC Class Codes: G06F 16/174 Redundancy elimination performed by the file system management of the data involved in backup or backup restore using de-duplication of the data G06F11/14
• CPC Class Codes: G06F 16/1824 implemented using Network-attached Storage [NAS] architecture distributed or networked storage systems G06F3/067; protocols for distributed storage of data in a network H04L67/1097
• CPC Class Codes: G06F 16/24556 Aggregation; Duplicate elimination
• CPC Class Codes: G06F 16/24569 Query processing with adaptation to specific hardware, e.g. adapted for using GPUs or SSDs
• CPC Class Codes: G06F 16/40 of multimedia data, e.g. slideshows comprising image and additional audio data retrieval of still image data G06F16/50; retrieval of audio data G06F16/60; retrieval of video data G06F16/70

Abstract

Exemplary methods, computer systems, and computer program products for smarter deduplicated caching of queries for green IT management in a computer storage device are provided. In one embodiment, the computer environment is configured for ascertaining the most-used data access chains. Multiple access paths to identical data are determined for the most-used data access chains. A generalized chain that is formed from the plurality of access paths to the identical data is determined. Multiple keys and information relating to the access paths to the identical data is deduplicated.

Claims

1. A method for smarter deduplicated caching of queries for green IT management by combining caching and deduplicating of queries and responses to reduce work load by a processor device in a computer storage device, the method comprising:

ascertaining a plurality of most-used data access chains, wherein a plurality of access paths to identical data is determined for the plurality of most-used data access chains;

determining a generalized chain that is formed from the plurality of access paths to the identical data; and

deduplicating a plurality of keys and a plurality of information relating to the plurality of access paths to the identical data, further including performing at least one of;

maintaining a plurality of statistics of the plurality of information used by a common information model (CIM) agent, wherein the ascertaining the plurality of most-used data access chains is performed by the CIM agent, and

using a plurality of statistical hints from the plurality of statistics for managing cache space.

2. The method of claim 1, further including placing the plurality of keys and the plurality of information in a cache.

3. The method of claim 1, further including prefetching the identical data with a plurality of correct keys.

4. The method of claim 1, further including exchanging at least one of a signature and a checksum and a cookie upon connectivity.

5. The method of claim 1, further including manually feeding the plurality of most-used data access chains to a common information model CIM agent.

6. The method of claim 1, further including configuring a common information model (CIM) client with a flag to perform at least one of forcing a refresh of a query and bypassing of a cache.

7. The method of claim 1, wherein the deduplicating is performed on contents of a request from a common information model (CIM) client.

8. A system for smarter deduplicated caching of queries for green IT management by combining caching and deduplicating of queries and responses to reduce work load in a computer storage device, the system comprising:

at least one processor device operable in the computing storage environment, wherein the at least one processor device is adapted for;

ascertaining a plurality of most-used data access chains, wherein a plurality of access paths to identical data is determined for the plurality of most-used data access chains, determining a generalized chain that is formed from the plurality of access paths to the identical data, and

deduplicating a plurality of keys and a plurality of information relating to the plurality of access paths to the identical data, further including a common information model (CIM) agent operable by the at least one processor device, wherein the CIM agent is configured for performing at least one of;

maintaining a plurality of statistics of the plurality of information used by the CIM agent, wherein the ascertaining the plurality of most-used data access chains is performed by the CIM agent, and

using a plurality of statistical hints from the plurality of statistics for managing cache space.

9. The system of claim 8, wherein the at least one processor device is further adapted for placing the plurality of keys and the plurality of information in a cache.

10. The system of claim 8, wherein the at least one processor device is further adapted for prefetching the identical data with a plurality of correct keys.

11. The system of claim 8, wherein the at least one processor device is further adapted for exchanging at least one of a signature and a checksum and a cookie upon connectivity.

12. The system of claim 8, further including a common information model (CIM) agent operable by the at least one processor device, wherein the CIM agent is adapted to be manually feed the plurality of most-used data access chains.

13. The system of claim 8, further including a common information model (CIM) client operable by the at least one processor device, wherein the CIM client is configured with a flag to perform at least one of forcing a refresh of a query and bypassing of a cache.

14. The system of claim 8, wherein the at least one processor device is further adapted for performing the deduplicating on contents of a request from a common information model (CIM) client.

15. The system of claim 14, wherein the contents include metadata.

16. A computer program product for smarter deduplicated caching of queries for green IT management by combining caching and deduplicating of queries and responses to reduce work load by a processor device in a computer storage device, the computer program product comprising a non-transitory computer-readable storage medium having computer-readable program code portions stored therein, the computer-readable program code portions comprising:

a first executable portion for ascertaining a plurality of most-used data access chains, wherein a plurality of access paths to identical data is determined for the plurality of most-used data access chains;

a second executable portion for determining a generalized chain that is formed from the plurality of access paths to the identical data; and

a third executable portion for deduplicating a plurality of keys and a plurality of information relating to the plurality of access paths to the identical data, further including a fourth executable portion for performing at least one of;

maintaining a plurality of statistics of the plurality of information used by the CIM agent, wherein the ascertaining the plurality of most-used data access chains is performed by the CIM agent, and

using a plurality of statistical hints from the plurality of statistics for managing cache space.

17. The computer program product of claim 16, further including a fourth executable portion for placing the plurality of keys and the plurality of information in a cache.

18. The computer program product of claim 16, further including a fourth executable portion for prefetching the identical data with a plurality of correct keys.

19. The computer program product of claim 16, further including a fourth executable portion for exchanging at least one of a signature and a checksum and a cookie upon connectivity.

20. The computer program product of claim 16, further including a fourth executable portion for manually feeding the plurality of most-used data access chains to a common information model (CIM) agent.

21. The computer program product of claim 16, further including a fourth executable portion for configuring a common information model (CIM) client with a flag to perform at least one of forcing a refresh of a query and bypassing of a cache.

22. The computer program product of claim 16, further including a fourth executable portion for performing the deduplicating on contents of a request from a common information model (CIM) client.