Multi-Level Bitmap Indexes for Flash Memory Storage Metadata

Metadata describes a digital item, providing (if known) such information as creator, publisher, contents, size, relationship to other resources, and more. Metadata may also contain "preservation" components that help us to maintain the integrity of digital files over time.

Title

  • Main Title Multi-Level Bitmap Indexes for Flash Memory Storage

Creator

  • Author: Wu, Kesheng
    Creator Type: Personal
  • Author: Madduri, Kamesh
    Creator Type: Personal
  • Author: Canon, Shane
    Creator Type: Personal

Contributor

  • Sponsor: Lawrence Berkeley National Laboratory. Computational Research Division.
    Contributor Type: Organization
  • Sponsor: National Energy Research Scientific Computing Division
    Contributor Type: Organization

Publisher

  • Name: Lawrence Berkeley National Laboratory
    Place of Publication: Berkeley, California
    Additional Info: Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, CA (United States)

Date

  • Creation: 2010-07-23

Language

  • English

Description

  • Content Description: Due to their low access latency, high read speed, and power-efficient operation, flash memory storage devices are rapidly emerging as an attractive alternative to traditional magnetic storage devices. However, tests show that the most efficient indexing methods are not able to take advantage of the flash memory storage devices. In this paper, we present a set of multi-level bitmap indexes that can effectively take advantage of flash storage devices. These indexing methods use coarsely binned indexes to answer queries approximately, and then use finely binned indexes to refine the answers. Our new methods read significantly lower volumes of data at the expense of an increased disk access count, thus taking full advantage of the improved read speed and low access latency of flash devices. To demonstrate the advantage of these new indexes, we measure their performance on a number of storage systems using a standard data warehousing benchmark called the Set Query Benchmark. We observe that multi-level strategies on flash drives are up to 3 times faster than traditional indexing strategies on magnetic disk drives.
  • Physical Description: 19

Subject

  • Keyword: Storage
  • Keyword: Velocity Data Management, Bitmap Index, Flash Memory
  • Keyword: Magnetic Storage Devices
  • Keyword: Magnetic Disks
  • Keyword: Data Management, Bitmap Index, Flash Memory
  • STI Subject Categories: 97
  • Keyword: Benchmarks
  • Keyword: Performance

Source

  • Conference: The Fourteenth International Database Engineering& Applications Symposium , Montreal, QC, CANADA, Aug. 16-18, 2010

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Article

Format

  • Text

Identifier

  • Report No.: LBNL-4217E
  • Grant Number: DE-AC02-05CH11231
  • Office of Scientific & Technical Information Report Number: 1004601
  • Archival Resource Key: ark:/67531/metadc843053
Back to Top of Screen