Jussi Myllymaki

Research Assistant

Computer Sciences Department
University of Wisconsin
1210 West Dayton Street
Madison, WI 53706-1685

telephone: (608) 262-6627
fax: (608) 262-9777
email: jussi@cs.wisc.edu

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Research Summary

I am interested in the performance analysis of DBMS operations on advanced tape and disk technology, including disk and tape arrays. I'm currently studying how to buffer large datasets from tertiary storage to disk and memory when such data are used for data exploration and visualization (the DEVise project). My advisor is Prof. Miron Livny.

My recent work includes improving the performance of relational joins of large volumes of disk and tape-resident data (see publication list below), and applying a log-structured organization to tertiary storage to solve problems associated with the diverse characteristics and functional limitations of tertiary media. Our recent paper on data visualization and exploration discusses data and metadata management issues when large and complex data sets are involved.

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Refereed Publications

  • Efficient Buffering for Concurrent Disk and Tape I/O (with Miron Livny), Proceedings of Performance '96 - The International Conference on Performance Theory, Measurement and Evaluation of Computer and Communication Systems, October 1996.
  • Integrated Visualization of Parallel Program Performance Data (with Karen L. Karavanic, Miron Livny and Barton P. Miller), Proceedings of the Third Workshop on Environments and Tools for Parallel Scientific Computing, August 1996
  • Log-Structured Organization for Tertiary Storage (with Daniel A. Ford), Proceedings of the International Conference on Data Engineering, February 1996. Also available as IBM Almaden Research Report 9941.
  • Visual Exploration of Large Data Sets (with Miron Livny and Raghu Ramakrishnan), Proceedings of SPIE - The International Society for Optical Engineering, January 1996.
  • Disk-Tape Joins: Synchronizing Disk and Tape Access (with Miron Livny), Proceedings of the ACM SIGMETRICS Conference, May 1995.
  • Submitted for Publication

  • DEVise: Integrated Querying and Visualization of Large Datasets, M. Livny, R. Ramakrishnan, K. Beyer, G. Chen, D. Donjerkovic, S. Lawande, J. Myllymaki, and K. Wenger, submitted to the 1997 ACM SIGMOD Conference.
  • Relational Joins for Data on Tertiary Storage, Jussi Myllymaki and Miron Livny, submitted to the 1997 International Conference on Data Engineering.
  • Other Publications

  • Disk-Tape Joins: Synchronizing Disk and Tape Access (with Miron Livny), University of Wisconsin, CS Department, Technical Report 1270, 1995.
  • Joins on Tapes: Project Report, Master's Degree Project Report, University of Wisconsin, CS Department, 1993.
  • Applying the Client-Server Model in Computer Network Architectures, Master's Thesis, Helsinki University of Technology, Department of Industrial Management, 1991. In Finnish.
  • Other Documents

  • Implementation and Performance Analysis of R-Tree Algorithms (with Jeff Schwarz and Yoav Weiss), class report, 1993.
  • Experiences with Implementing a Log-Structured File System (with Trishul Chilimbi and Yoav Weiss), class report, 1992.
  • Overview of current tape technologies and products
  • Overview of RAID technology suppliers and products
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    Some frequently needed links (FNL)

  • Unified Technical Report Search
  • Adaptec SCSI adapters (home)
  • Digital PCs and Technical Journal and Whitepapers (home)
  • IBM Technology and Research and CyberJournal
  • Quantum Digital Linear Tape and DLT FAQ and Whitepapers (home)
  • Sun Solaris and SparcStations and Technical Reports (home)
  • SCSI FAQ and Storage FAQ and other Usenet FAQs
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    Many other of my links are found here.

    jussi@cs.wisc.edu