The assignee for this patent application, patent application serial number 588209, is
Reporters obtained the following quote from the background information supplied by the inventors: "The present invention relates to compression of data storage and data caching.
"In modern computer systems, accessing data from storage media (such as disks and tapes), or networked storage (such as Fiber Channel, iSCSI) and the like tend to exhibit high latency and limited throughput. Thus, many different techniques have been developed to accelerate storage access, which are then employed at various levels of the access path. These techniques include CPU caches to disk caches. Further, different techniques have been developed to increase the throughput for storage medium access by the use of parallel storage access. Parallel storage access includes the use of RAID devices and storage RAM buffers. RAM has long been used as a form of storage medium caches, but due to various reasons, the amount of RAM cache available for storage is usually limited. The critical layer along the data path during storage access is the file system layer.
"Compression is a technique of reducing the data size to be stored and retrieved. Compression is applicable where pattern repetitions occur or if information is otherwise redundant. This compression of data reduces the data bandwidth required for transfer over the storage interface and time spent on accessing the data itself on the storage medium. Compression improves the storage throughput and reduces the latency depending on the compression algorithm and implementation. Caching is mechanism of storing high temporal and special locality data in high-speed, low-latency media. These high-speed, low-latency media, such as DRAM,
In addition to obtaining background information on this patent application, VerticalNews editors also obtained the inventors' summary information for this patent application: "This Summary is provided to introduce a selection of concepts in a simplified form that are further described below in the Detailed Description. This Summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.
"In one embodiment, the present invention provides for transferring data between an application layer program and memory, by intercepting, by a compressed cache filter, attempts to access memory by an operating system to a file system, the attempts forming an access pattern associated with a given type of application layer program. A processor associated with the compressed cache filter generates an access profile identifying local data and storage media data. In response to one or more subsequent access requests, data corresponding to each subsequent access request is transferred between i) the operating system and ii) at least one of a cache memory and the storage media based on the access profile; wherein, the transferring between the operating system and the cache memory comprises compressing and decompressing, by the processor, one or more portions of the corresponding local data.
BRIEF DESCRIPTION OF THE DRAWINGS
"Other aspects, features, and advantages of the present invention will become more fully apparent from the following detailed description, the appended claims, and the accompanying drawings in which like reference numerals identify similar or identical elements.
"FIG. 1 shows an exemplary compressed cache storage system employing one or more exemplary embodiments of the present invention for compression;
"FIG. 2 shows exemplary access profile and signature tables for the system of FIG. 1; and
"FIG. 3 shows an exemplary method as might be employed by data stream processing system of FIG. 1."
For more information, see this patent application: Vasudevan, Gauthaman. Compressed Cache Storage Acceleration. U.S. Patent Application Serial Number 588209, filed
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