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NetApp : Patent Issued for Controlling a Dynamically Instantiated Cache (USPTO 9317430)

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04/28/2016 | 10:58pm CEST

By a News Reporter-Staff News Editor at Journal of Engineering -- NETAPP, INC. (Sunnyvale, CA) has been issued patent number 9317430, according to news reporting originating out of Alexandria, Virginia, by VerticalNews editors.

The patent's inventors are Soundararajan, Gokul (Sunnyvale, CA); Voruganti, Kaladhar (Sunnyvale, CA); Bairavasunda, Lakshmi Narayanan (Sunnyvale, CA); Sehgal, Priya (Bangalore, IN); Mathur, Vipul (Bangalore, IN).

This patent was filed on October 24, 2014 and was published online on April 19, 2016.

From the background information supplied by the inventors, news correspondents obtained the following quote: "Data for companies or other organizations is commonly stored in networked storage. The networked storage center can be referred as a data center. The resources of a data center such as storage and access bandwidth are limited. Thus, a common goal for a data center is to improve utilization of the resources of the storage center, to improve storage utilization and access throughput. There may be applications within the company or organization that generate large workloads, making many access requests to the data center. Data access to storage is typically slow relative to computer processing speeds. One way to improve resource use in a data center is to provide caching, recognizing that data accessed in a workload has a greater likelihood of being accessed again relative to other data stored in the data center.

"A caching system may be multi-tiered, where there are multiple layers of caching, which are coordinated. Traditionally, lower layers of cache, or the layers closer to the processing resources, have smaller size but are faster relative to the higher layers of cache. Thus, traditional cache levels decrease in size and increase in speed the closer the cache level gets to the processing resources. From the other perspective, the closer the cache level is to the client making the access request, the larger and slower it traditionally is.

"Cache coherency protocols, or coordination communication among the levels of cache have an underlying assumption based on the speed and size of the cache levels. Traditional multi-tier cache protocols or traditional inclusion, exclusion approaches to cache coherency have underlying assumptions regarding cache size and speed. Deviations in cache structure would render such traditional protocols unsuitable for use with the different cache structure.

"Returning to the concept of data center resource utilization, the structuring of cache systems fixes the use of resources in the system. To the extent the data access of a data center is highly dynamic, the traditional fixed structure of caches can hinder performance as often as it improves performance. The traditional fixed structure results in redundancy of data and redundancy of caching effort among cache layers. The redundancy of data consumes resources that could otherwise be preserved for other use.

"In a traditional cache, the different caching levels or tiers of the cache are oblivious of the caching decisions and workload changes experienced at each of these different tiers. The different tiers of the cache are traditionally not able to obtain first-hand information about the changes at other tiers. The lack of first-hand information leads to a communication gap among the cache levels. The communication gap in turn causes each caching tier to take extra effort to speculate about the workload changes and later adapt to them. Such duplicated effort increases the adaptation time of the overall system, which decreases or nullifies the caching effort."

Supplementing the background information on this patent, VerticalNews reporters also obtained the inventors' summary information for this patent: "A change in workload characteristics detected at one tier of a multi-tiered cache is communicated to another tier of the multi-tiered cache. Multiple caching elements exist at different tiers, and at least one tier includes a cache element that is dynamically resizable and can be dynamically instantiated or destroyed. The communicated change in workload characteristics causes the receiving tier to adjust at least one aspect of cache performance in the multi-tiered cache. At least one dynamically resizable element in the multi-tiered cache can be resized responsive to the change in workload characteristics."

For the URL and additional information on this patent, see: Soundararajan, Gokul; Voruganti, Kaladhar; Bairavasunda, Lakshmi Narayanan; Sehgal, Priya; Mathur, Vipul. Controlling a Dynamically Instantiated Cache. U.S. Patent Number 9317430, filed October 24, 2014, and published online on April 19, 2016. Patent URL: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=9317430.PN.&OS=PN/9317430RS=PN/9317430

Keywords for this news article include: INC., NETAPP INC.

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2016, NewsRx LLC

(c) 2016 NewsRx LLC, source Science Newsletters

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