William (Bill) Tetzlaff  William (Bill) Tetzlaff photo       

contact information

Emeritus Distinguished Engineer, Former President IBM Academy of Technology
Thomas J. Watson Research Center, Yorktown Heights, NY USA

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Professional Associations

Professional Associations:  ACM  |  American Association for the Advancement of Sciences  |  IEEE


2007

System for automated storage management for databases
P Goyal, W H Tetzlaff
US Patent 7,305,379, 2007 - Google Patents, Google Patents
US Patent 7,305,379


2005

METHOD AND APPARATUS FOR MANAGING HARDWARE AND SOFTWARE COMPONENTS
J L Hellerstein, J O Kephart, E R Lassettre, N J Pass, D R Safford, W H Tetzlaff, S R White
2005 - freepatentsonline.com


2004

Position: Short Object Lifetime Require a Delete-Optimized Storage
F Douglis, J Palmer, ES Richards, D Tao, WH Tetzlaff, JM Tracey, J Yin
IBM Research Centers and and US Department of Defense, 2004

Position: short object lifetimes require a delete-optimized storage system
F Douglis, J Palmer, E S Richards, D Tao, W H Tetzlaff, J M Tracey, J Yin
Proceedings of the 11th workshop on ACM SIGOPS European workshop, pp. 6, 2004

System and method for optimizing a storage system to support short data lifetimes
K S Anderson, F Douglis, N Halim, J D Palmer, E S Richards, D Tao, W H Tetzlaff, J M Tracey, J L Wolf
US Patent App. 10/ ..., 2004 - Google Patents, Google Patents
US Patent App. 10/944,597


2003

Policy-based autonomic storage allocation
Murthy Devarakonda, David Chess, Ian Whalley, Alla Segal, Pawan Goyal, Aamer Sachedina, Keri Romanufa, Ed Lassettre, William Tetzlaff, Bill Arnold
Self-Managing Distributed Systems, pp. 143--154, Springer, 2003

Towards Benchmarking Autonomic Computing Maturity
Sam Lightstone, Joseph Hellerstein, William Tetzlaff, Philippe Janson, Ed Lassettre, Carolyn Norton, Bala Rajaraman, Lisa Spainhower
IEEE Workshop on Autonomic Computing, 2003

Policy-Based, Autonomic Storage Allocation
Murthy Devarakonda, David Chess, Ian Whalley, Alla Segal, Pawan Goyal, Aamer Sachedina, Keri Romanufa, Ed Lassettre, William Tetzlaff, and Bill Arnold
IEEE Distributed Systems Operations Management, 2003


2002

Recovery-oriented computing (ROC): Motivation, definition, techniques, and case studies
D Patterson, A Brown, P Broadwell, G Candea, M Chen, J Cutler, P Enriquez, A Fox, E Kiciman, M Merzbacher, others
Technical Report, 2002

Managing an object store based on object replacement penalties and reference probabilities
G P Bozman, J T Robinson, W H Tetzlaff
US Patent 6,385,699, 2002 - Google Patents, Google Patents
US Patent 6,385,699


2001



2000



1999



1998

Multimedia—an introduction
Robert J Flynn, William H Tetzlaff
IBM journal of research and development 42(2), 165--176, IBM, 1998

Channel conservation for anticipated load surge in video servers
A Dan, P Shahabuddin, D Sitaram, W H Tetzlaff
US Patent 5,768,681, 1998 - Google Patents, Google Patents
US Patent 5,768,681

Method for determining load capacity by grouping physical components into logical components whose loads represent fixed proportional loads of physical components
A Dan, M G Kienzle, D Sitaram, W H Tetzlaff
US Patent 5,768,520, 1998 - Google Patents, Google Patents
US Patent 5,768,520

Multimedia: an introduction
RJ Flynn, WH Tetzlaff
IBM journal of research and development 42(2), 165--176, IBM Corp. Riverton, NJ, USA, 1998


1997

Scheduling videos in a video-on-demand system
A DAN, P SHAHABUDDIN, D SITARAM, W H TETZLAFF
1997 - v3.espacenet.com

Long term resource allocation in video delivery systems
K C Almeroth, A Dan, D Sitaram, W H Tetzlaff
IEEE INFOCOM, pp. 1333--1340, 1997

Method for verification and restoration of directories in CPU system managed store
R Baird, T Beretvas, G P Bozman, R R Guyette, P Hodges, A S Lett, J J Myers, W H Tetzlaff
US Patent ..., 1997 - Google Patents, Google Patents
US Patent 5,675,767

Video-on-demand systems
A Dan, M G Kienzle, D Sitaram, W H Tetzlaff
1997 - freepatentsonline.com


1996

The Block Allocation Problem in Video Servers
William Tetzlaff, Robert Flynn
Multimedia Communications and Video Coding, pp. 179--190, Springer, 1996

Effect of video server topology on contingency capacity requirements
Martin G Kienzle, Asit Dan, Dinkar Sitaram, William H Tetzlaff
Electronic Imaging: Science \& Technology, pp. 320--327, 1996

Disk striping and block replication algorithms for video file servers
R Flynn, W Tetzlaff
Proceedings of MULTIMEDIA, pp. 590, 1996

Block allocation in video servers for availability and throughput
W Tetzlaff, R Flynn
Proceedings Multimedia Computing and Networking, 1996

Data storage using a cache and method therefor
G P Bozman, G Eisenberger, A S Lett, J J Myers, W H Tetzlaff, J H Unger
1996 - freepatentsonline.com

Highly available fault tolerant relocation of storage with atomicity
R Baird, G P Bozman, G Eisenberger, A Kamerman, A S Lett, J J McAssey, J J Myers, W H Tetzlaff, P Wang
US Patent ..., 1996 - Google Patents, Google Patents
US Patent 5,504,857


1995

Long term channel allocation strategies for video applications
Kevin C Almeroth, Asit Dan, Dinkar Sitaram, William H Tetzlaff
1995 - smartech.gatech.edu, Georgia Institute of Technology

Evaluation of design alternative for a cluster file system
M. Devarakonda, A. Mohindra, J. Simoneaux, W.H. Tetzlaff
Proceedings of the USENIX 1995 Technical Conference Proceedings, pp. 4--4

Concurrency management using version identification of shared data as a supplement to use of locks
R Baird, G Eisenberger, A S Lett, J J Myers, W H Tetzlaff, J G Unger
US Patent ..., 1995 - Google Patents, Google Patents
US Patent 5,410,697

Using tertiary storage in video-on-demand servers
M G Kienzle, A Dan, D Sitaram, W Tetzlaff
COMPCON-IEEE-DIGEST OF PAPERS AND PROCEEDINGS-, pp. 225--225, 1995

Elements of scalable video servers
W Tetzlaff, R Flynn
Compcon'95.'Technologies for the Information Superhighway', Digest of Papers., 239--250, 1995


1994

A methodology for evaluating storage systems in distributed andhierarchical video servers
W Tetzlaff, M Kienzle, D Sitaram
Compcon Spring'94, Digest of Papers., 430--439, 1994

Method for minimizing lock processing while ensuring consistency among pages common to local processor caches and a shared external store
W H Tetzlaff, J H Unger
US Patent 5,301,290, 1994 - Google Patents, Google Patents
US Patent 5,301,290


1993

A Preliminary Study of Push vs. Pull in Motion Video Servers
K. Hwang, M. Kienzle, D. Sitaram, W. Tetzlaff
Proceedings of the IEEE High Performance Communications Subsystems workshop, 1993

Multiprocessor system includes operating system for notifying only those cache managers who are holders of shared locks on a designated page by global lock manager
R Baird, G P Bozman, A S Lett, J J Myers, W H Tetzlaff
US Patent 5,226,143, 1993 - Google Patents, Google Patents
US Patent 5,226,143

Method for dynamically expanding and rapidly accessing file directories
R Baird, R R Berbec, G P Bozman, A S Lett, J J Myers, W H Tetzlaff, J H Unger
US Patent ..., 1993 - Google Patents, Google Patents
US Patent 5,218,696


1992

A Comparison of Page Replacement Algorithms
W. H. Tetzlaff, R. Flynn
Computer Measurement Group Proceedings, pp. 1136-1143, 1992

Method for managing a data cache using virtual external storage addresses as arguments
G P Bozman, G Eisenberger, A S Lett, J J Myers, W H Tetzlaff, J H Unger
US Patent ..., 1992 - Google Patents, Google Patents
US Patent 5,088,026


1991

Paging in VM/ESA
W Tetzlaff
Computer Measurement Group Proceedings, pp. 723-734, 1991

Analysis of Queue Message Communication Between Processors
H. H. Ghannad and W. H. Tetzlaff
Computer Measurement Group Conference, pp. 271-280, 1991

Evaluating Page Residency Time with Examples from VM/ESA
W. Tetzlaff
Computer Measurement Group Proceedings,, pp. 231-238, 1991

Data storage using a cache.
G P BOZMAN, G EISENBERGER, A S LETT, J J MYERS, W H TETZLAFF, J A Y H UNGER
1991 - v3.espacenet.com

Maintaining data consistency in cache storage systems.
R Baird, G P Bozman, A S Lett, J J Myers, W H Tetzlaff
1991 - freepatentsonline.com

Method for ensuring map integrity in a system-managed store of a computer.
R Baird, T Beretvas, G P Bozman, R R Guyette, P Hodges, A S Lett, J J Myers, W H Tetzlaff
1991 - freepatentsonline.com

Hierarchical invalidation for distributed caches.
W H Tetzlaff, J H Unger
1991 - freepatentsonline.com


Distributed computer systems.
R Baird, G Eisenberger, A S Lett, J J Myers, W H Tetzlaff, J H Unger
1991 - freepatentsonline.com


1989

Paging in the VM
International Business Machines Corporation. Research Division, W Tetzlaff
1989

Paging in the VM/XA System Product
W. Tetzlaff
Computer Measurement Group Transactions66, 1989

Introduction to the Special Issue on VM/XA System Product Performance
W. Tetzlaff (guest editor)
Computer Measurement Group Transactions66, 1989

Analysis of block-paging strategies
W H Tetzlaff, M G Kienzle, J A Garay
IBM Journal of Research and Development 33(1), 51--59, 1989


1988

Analysis of an Intersystem Serialization Mechanism
H. H. Ghannad and W. H. Tetzlaff
Proceedings of the Computer Measurement Conference, pp. 11069-1075, 1988

Analysis of page-reference strings of an interactive system
MG Kienzle, JA Garay, WH Tetzlaff
IBM Journal of Research and Development 32(4), 523--535, IBM Corp. Riverton, NJ, USA, 1988


1987

A page-swapping prototype for VM/HPO
WH Tetzlaff, T Beretvas, WM Buco, J Greenberg, DR Patterson, GA Spivak
IBM Journal of Research and Development 26(2), 215, 1987


1986

Paging in VM/370 Operating Systems
W. Tetzlaff and T. Beretvas
Computer Measurement Group Transactions53, 1986

Introduction to the Special Issue on VM Performance
W. Tetzlaff
Computer Measurement Group Transactions pp. 53, 1986


1985

Preliminary Analysis of Page Reference Strings of an Interactive System.
Juan A Garay, Martin G Kienzle, William H Tetzlaff
Int. CMG Conference, pp. 94--105, 1985

Prototyping Experimental Paging Algorithms.
William H Tetzlaff, Gerald A Spivak, William M Buco, Thomas Beretvas, Jerry Greenberg, David R Patterson, NY Kingston
Int. CMG Conference, pp. 85--93, 1985

PRELIMINARY ANALYSIS OF PAGE REFERENCE STRINGS OF AN INTERAC-TIVE SYSTEM'
JA Garay, MG Klenzle, WH Tetzlaff
CMG, pp. 94, 1985

PROTOTYPING EXPERIMENTAL PAGING ALGORITHMS'
W Tetzlaff, G Spivak, W Buco, T Beretvas, J Greenberg, D Patterson, NY Kingston
CMG, pp. 85, 1985


1984

WORKING SET DETERMINATION
T Beretvas, WM Buco, J Greenberg, DR Patterson, GA Spivak, WH Tetzlaff
IBM Technical Disclosure Bulletin26, 4760, International Business Machines Corporation, 1984

SWAP FAULTING AND PARTIAL SWAP
T Beretvas, WM Buco, J Greenberg, DR Patterson, GA Spivak, WH Tetzlaff
IBM Technical Disclosure Bulletin27, 1407, International Business Machines Corp., 1984

TRIM-SET AND SWAP—SET SELECTION
T Beretvas, M Buco, R Patterson, A Spivak, WH Tetzlaff
IBM Technical Disclosure Bulletin26, 4762, International Business Machines Corporation, 1984

VM/370, Attached Processor, and multiprocessor performance study
William H. Tetzlaff, William M. Buco
IBM systems journal 23(4), 375--385, IBM Corp., 1984

Blocked Page-Out
T Beretvas, WM Buco, J Greenberg, DR Patterson, GA Spivak, WH Tetzlaff
IBM Technical Disclosure Bulletin 26(9), 4753--4754, International Business Machines Corporation, 1984

Analysis of free-storage algorithms-visited
Gerald Bozman, William Buco, Timothy P. Daly, William H. Tetzlaff
IBM Systems Journal 23(1), 44--64, IBM, 1984

Paging Enhancements in VM/SP HPO 3.4
Thomas Beretvas, William Tetzlaff, William O'Brien
1984 - IBM Corporation, IBM Corporation

Analysis of free-storage algorithms-revisited
G Bozman, W Buco, TP Daly, WH Tetzlaff
IBM Systems Journal 23(1), 44--64, International Business Machines, 1984

VM/370, Attached Processor, and multiprocessor performance study.
W H Tetzlaff, W M Buco
IBM Systems Journal 23(4), 375--385, 1984


1983

Paging in VM/SP
T Beretvas, W Tetzlaff, WM O'Brien
1983 - IBM Corporation, IBM Corporation


1982

A New Approach to VM Performance Analysis.
William H Tetzlaff, Thomas Beretvas
Int. CMG Conference, pp. 339--350, 1982

A New Approach to VM Performance Analysis
W. Tetzlaff, T. Beretvas
1982 Computer Measurement Group International Conference, pp. 339-350

A New Approach to VM Performance Analysis
W Tetzlaff, T Beretvas
Proceedings of the Computer Measurement Group, pp. 339--350, 1982


1979

State sampling of interactive VM/370 users
WH Tetzlaff
IBM Journal of Research and Development 18(1), 164, 1979


1977

Generalized Reduction of Information
D Potter, W Tetzlaff
Technical Report, Research Report RC-6676, IBM Thomas J. Watson Research Center, Yorktown Heights, NY, 1977


1972

SPG: An effective use of performance and usage data
JA Cooperman, HW Lynch, WH Tetzlaff
Computer 5(5), 20--23, IEEE Computer Society Press, 1972

The Use of a Query System to Answer Questions about Service
Jerome A. Cooperman, William H. Tetzlaff
The Scientific Process and the Computer" by Donald N. Streeter, pages 378 to 386, 1972

SGP: An Effective Use of Performance and Usage Data
J. Cooperman, H. Lynch, W. Tetzlaff,
IEEE Computer, September/October, 1972


1966

Trial: A computer technique for retrieving information from abstracts of literature
Kenneth Janda, William H Tetzlaff
Behavioral science 11(6), 480--486, Wiley Online Library, 1966

The TRIAL Information Retrieval System for the IBM 709/90/94
K. Janda and W. Tetzlaff
Behavioral Science (Computer Program Abstracts), 11(5), 1966

TRIAL A Computer Technique for Retrieving Information from Abstracts of Literature
K. Janda and W. Tetzlaff
Behavioral Science 11(6), 1966


1965

Test scoring and item analysis programs.
Robert C Nichols, William Tetzlaff
Educational and Psychological Measurement, Sage Publications, 1965

Test Scoring and Item Analysis Programs
W TETZLAFF, R Nichols
Educational and psychological measurement, 199, Educational and psychological measurement], 1965


1957

Journal of Research and Development
RJ Flynn, WH Tetzlaff, A Dan, SI Feldman, DN Serpanos, RL Haskin, T Sanuki, Y Asakawa, M Kumar, RM Bolle, others
IBM Journal of Research and Development, International Business Machines Corporation, 1957


Year Unknown

by RJ Flynn
WH Tetzlaff
WH Tetzlaff, 0

A Path Based Approach to Bandwidth Reservation and Empirical Capacity Estimation of a Video Server Environment
A Dan, D Sitaram, M Kienzle, W Tetzlaff
IBM corporation, 0

The Research Server Complex Manager for Large-Scale Multimedia Servers
A Dan, M Eshel, J Hollan, R Kenneson, M Kienzle, J McAssey, R Rose, D Sitaram, W Tetzlaff
plc.or.kr, 0