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Adaptive self-tuning memory in DB2

Published: 01 September 2006 Publication History

Abstract

DB2 for Linux, UNIX, and Windows Version 9.1 introduces the Self-Tuning Memory Manager (STMM), which provides adaptive self tuning of both database memory heaps and cumulative database memory allocation. This technology provides state-of-the-art memory tuning combining control theory, runtime simulation modeling, cost-benefit analysis, and operating system resource analysis. In particular, the nove use of cost-benefit analysis and control theory techniques makes STMM a breakthrough technology in database memory management. The cost-benefit analysis allows STMM to tune memory between radically different memory consumers such as compiled statement cache, sort, and buffer pools. These methods allow for the fast convergence of memory settings while also providing stability in the presence of system noise. The tuning mode has been found in numerous experiments to tune memory allocation as well as expert human administrators, including OLTP, DSS, and mixed environments. We believe this is the first known use of cost-benefit analysis and control theory in database memory tuning across heterogeneous memory consumers.

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cover image ACM Conferences
VLDB '06: Proceedings of the 32nd international conference on Very large data bases
September 2006
1269 pages

Sponsors

  • SIGMOD: ACM Special Interest Group on Management of Data
  • K.I.S.S. SIG on Databases
  • AJU Information Technology Co., Ltd
  • US Army ITC-PAC Asian Research Office
  • Google Inc.
  • The Database Society of Japan
  • Samsung SOS
  • Advanced Information Technology Research Center
  • Naver
  • Microsoft: Microsoft
  • Korea Info Sci Society: Korea Information Science Society
  • SK telecom
  • Systems Applications Products
  • ORACLE: ORACLE
  • International Business Management
  • Air Force Office of Scientific Research/Asian Office of Aerospace R&D
  • Kosef
  • Kaist
  • LG Electronics
  • CCF-DBS

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VLDB Endowment

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Published: 01 September 2006

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