Optimized caching based on historical production patterns for catalogs

Patent metadata

Field	Value
Publication number	US-9892126-B2
Application number	US-201313743749-A
Country	US
Kind code	B2
Filing date	Jan 17, 2013
Priority date	Jan 17, 2013
Publication date	Feb 13, 2018
Grant date	Feb 13, 2018

Abstract

A method, system and computer readable medium that predict times where cost of catalog caching is not efficient and deactivating catalog caching for that catalog during the predicted times. More specifically, an optimized catalog caching operation conducts historical analysis on catalog usage via records such as resource measurement facility (RMF) records and catalog statistical data.

First claim

What is claimed is:

1. A method for optimizing catalog system operations comprising:
executing an optimized catalog caching module on a host system;
communicating with a catalog system via the host system, the catalog system comprising a master catalog, a data set and a plurality of user catalogs, the plurality of user catalogs comprising basic catalog structure (BCS) type catalogs;
performing historical analysis on catalog usage via the optimized catalog caching module;
performing analysis of input/output rates for catalog volumes via the optimized catalog caching module;
predicting times where a cost of catalog caching is not efficient, the predicting times comprising conducting historical analysis on catalog usage via catalog statistical data, the times where a cost of catalog caching is not efficient comprising times of batch operations where updates to a catalog from multiple systems degrade cache performance; and,
automatically controlling catalog caching throughout a period of time based upon a mode of operation providing a best response time, the mode of operation comprising a cache mode of operation and a direct access storage device (DASD) mode of operation.

2. The method of claim 1 , wherein:
the catalog statistical data comprises resource measurement facility (RMF) records.

3. The method of claim 1 , further comprising:
reactivating catalog caching during times where a caching mode of operation provides a most likely best response time.

4. The method of claim 1 , wherein:
the catalog caching comprises a virtual look aside facility (VLF) caching.

5. A system comprising:
a processor;
a data bus coupled to the processor; and
a non-transitory computer-usable medium embodying computer program code, the computer-usable medium being coupled to the data bus, the computer program code comprising instructions executable by the processor and configured for:
executing an optimized catalog caching module on a host system;
communicating with a catalog system via the host system, the catalog system comprising a master catalog, a data set and a plurality of user catalogs, the plurality of user catalogs comprising basic catalog structure (BCS) type catalogs;
performing historical analysis on catalog usage via the optimized catalog caching module;
performing analysis of input/output rates for catalog volumes via the optimized catalog caching module;
predicting times where a cost of catalog caching is not efficient, the predicting times comprising conducting historical analysis on catalog usage via catalog statistical data, the times where a cost of catalog caching is not efficient comprising times of batch operations where updates to a catalog from multiple systems degrade cache performance; and,
automatically controlling catalog caching throughout a period of time based upon a mode of operation providing a best response time, the mode of operation comprising a cache mode of operation and a direct access storage device (DASD) mode of operation.

6. The system of claim 5 , wherein:
the catalog statistical data comprises resource measurement facility (RMF) records.

7. The system of claim 5 , the computer program code further comprises computer executable instructions configured for:
reactivating catalog caching during times where a caching mode of operation provides a most likely best response time.

8. The system of claim 5 , wherein:
the catalog caching comprises a virtual look aside facility (VLF) caching.

9. A non-transitory computer-usable medium embodying computer program code, the computer program code comprising computer executable instructions configured for:
executing an optimized catalog caching module on a host system;
communicating with a catalog system via the host system, the catalog system comprising a master catalog, a data set and a plurality of user catalogs, the plurality of user catalogs comprising basic catalog structure (BCS) type catalogs;
performing historical analysis on catalog usage via the optimized catalog caching module;
performing analysis of input/output rates for catalog volumes via the optimized catalog caching module;
predicting times where a cost of catalog caching is not efficient, the predicting times comprising conducting historical analysis on catalog usage via catalog statistical data, the times where a cost of catalog caching is not efficient comprising times of batch operations where updates to a catalog from multiple systems degrade cache performance; and,
automatically controlling catalog caching throughout a period of time based upon a mode of operation providing a best response time, the mode of operation comprising a cache mode of operation and a direct access storage device (DASD) mode of operation.

10. The computer-usable medium of claim 9 , wherein:
the catalog statistical data comprises resource measurement facility (RMF) records.

11. The computer-usable medium of claim 9 , wherein the computer program code further comprises computer executable instructions configured for:
reactivating catalog caching during times where a caching mode of operation provides a most likely best response time.

12. The computer-usable medium of claim 9 , wherein:
the catalog caching comprises a virtual look aside facility (VLF) caching.

Assignees

• IBM

Inventors

• Mccune Franklin E
• Reed David C
• Smith Keith R
• Smith Max D

Classifications

• G06F3/0644

  Management of space entities, e.g. partitions, extents, pools · CPC title

• G06F3/0631

  by allocating resources to storage systems · CPC title

• G06F16/14 Primary

  Details of searching files based on file metadata · CPC title

• G06F2212/1016

  Performance improvement · CPC title

• G06F3/061

  Improving I/O performance · CPC title