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                USENIX WINTER 1993 TECHNICAL CONFERENCE

			January 25-29, 1993
		       San Diego, California

TECHNICAL SESSIONS - Wednesday though Friday

Wednesday, January 27

9:00 am - 10:20 am
OPENING REMARKS
Rob Kolstad, Berkeley Software Design, Inc. & Daniel Geer, 
Geer Zolot Associates

KEYNOTE ADDRESS
Robert Carr, Go Corporation

Robert Carr will speak on mobile pen-based computing 
and its impact on the technology and the marketplace.

Robert Carr is Vice-President of Software and co-
founder of Go (a 150-person mobile pen-based input 
company).  He is the architect of PenPoint, the leading 
technology contender for mobile pen-based computing.  
Carr joined Go in 1985 when Go acquired Forefront 
Corporation.  He was co-founder of Forefront in 1983 and 
the designer and principal developer of its award-
winning integrated office automation system.  From 
1986 to 1987, Carr was Chief Scientist at Ashton-Tate.  
He holds both BS and MS degrees in computer engineering 
from Stanford University.

10:20 am - 10:45 am  Break

10:45 am - 12:05 pm  [track 1]

Libraries & Links
Session Chair:  Tom Christiansen, CONVEX Computer Corp.

Improved Libraries for Dictionaries and Abstract Graphs
Stephen C. North, Kiem-Phong Vo, AT&T Bell Laboratories

Linking Shared Segments
W. E. Garrett, M. L. Scott, R. G. Bianchini, L. I. 
Kontothanassis, R. A. McCallum, J. A. Thomas, R. 
Wisniewski, S. Luk, University of Rochester

A Library Implementation of POSIX Threads under UNIX
Frank Mueller, Florida State University

10:45 am - 12:05 pm  [track 2]

New Views
Session Chair:  Peter Honeyman, CITI, University of 
Mighigan

Hello World. . .
Rob Pike, Ken Thompson, AT&T Bell Laboratories

Es:  A Shell with Higher Order Functions
Paul Haahr, Adobe Systems & Byron Rakitzis, Network 
Appliance Corporation

Jgraph: A Filter for Plotting Graphs in PostScript
James S. Plank, Princeton University


10:45 am - 12:05 pm  [track 3]

Invited Talk:  Molecular Visualization
Thomas Ferrin, University of California, San Francisco

The ability to display and interactively manipulate 
molecular models is a powerful method for studying the 
structures and interactions of molecules. This talk will 
describe MidasPlus, an interactive system used to study 
three dimensional macromolecular structures.  It will 
illustrate the various ways molecular data can be 
visualized and manipulated. The techniques include 
atomic coordinate data, controls for rotations and 
translations, depth-cued wireframe images, a variety of 
surface forms, stereo view and kinetic depth effects, and 
color encoded quantitative information.

12:05 pm - 1:30 pm  Lunch

1:30 pm - 2:50 pm [track 1]

Tuning
Session Chair:  Dinah McNutt, Tivoli Systems, Inc.

Faster AFS
Michael T. Stolarchuk, University of Michigan

The AutoCacher:  A File Cache Which Operates at the NFS 
Level
Ron Minnich, Supercomputing Research Center

Pitfalls in Multithreading SVR4 STREAMS and Other 
Weightless Processes
Sunil Saxena, J. Kent Peacock, Vijaya Verma, Mohan 
Krishnan, Intel Multiprocessor Consortium

1:30 pm - 2:50 pm [track 2]

Tools
Session Chair:  Saul G. Wold, Sun Microsystems, Inc.

Warlock: A Static Data Race Analysis Tool
Nicholas Sterling, SunSoft, Inc.

DUEL - A Very High Level Debugging Language
Michael Golan, David R. Hanson, Princeton University

The San Diego ``Zoo'':  A Multicomputer Test Suite
Chris Peak, Locus Computing Corporation

1:30 pm - 2:50 pm [track 3]

Invited Talk:  Internationalization
Jeff Haemer, Canary Software

Nervous about moving your working code to a world 
where "chocolate" sorts after "cuba libre", strchr(s, 'r') 
can land you in the middle of a two-byte character, or 
upper- and lower-case are meaningless?  This talk is a 
gentle, practical introduction to the not-so-gentle world 
of internationalization.  It offers an overview of the 
problems and current solutions.

2:50 pm - 3:30 pm  Break

3:30 pm - 5:00 pm [track 1]

Communications
Session Chair:  Dave Taylor, Sun World Magazine, Inc.

PhoneStation, Moving the Telephone onto the Virtual 
Desktop
Stephen A. Uhler, Bellcore

Glish:  A User-level Software Bus For Loosely Coupled 
Distributed Systems
Vern Paxson, Chris Saltmarsh, Lawrence Berkeley 
Laboratory

UNIX Services for Multilevel Storage and Communications 
over a Secure LAN
Bruno d'Ausbourg, Christel Calas, CERT-ONERA

3:30 pm - 5:00 pm [track 2]

Invited Talk:  Highlights from the USENIX MicroKernel 
Workshop and Other Kernel Architectures, April 1992
Chaired by Lori Grob, Chorus systemes

3:30 pm - 5:00 pm [track 3]

Invited Talk:  TCP/IP System Administration
Adnib Craig Hunt, National Institute of Standards and 
Technology

This presentation is about how to make TCP/IP work on 
your UNIX system. After summarizing the basics of 
TCP/IP, the talk will address planning and preparation 
for a network connection, configuration of the network 
interface, of the routing table, and of the name server.  It 
concludes with some very simple troubleshooting tips.

Thursday, January 28

9:00 am - 10:20 am [track 1]

Xbits
Session Chair:  Mary Seabrook, Open Systems Solutions, 
Inc.

A Smart Frame Buffer
Joel McCormack, Bob McNamara, Digital Equipment 
Corporation

Wafe - An X Toolkit Based Frontend for Application 
Programs in Various Programming Languages
Gustaf Neumann, Stefan Nusser, Vienna University of 
Economics & Business Administration

Design and Implementation of a Multi-Threaded Xlib
Carl Schmidtmann, Digital Equipment Corporation 
consultant, Michael Tao, Xerox, & Steven Watt, Xerox 
consultant

9:00 am - 10:20 am [track 2]

Filesystems, I
Session Chair:  Dan Geer, Geer Zolot Associates

The Design and Implementation of the Inversion File 
System
Michael Olson, University of California, Berkeley

Operating System Support for Portable Filesystem 
Extensions
Neil Webber, Epoch Systems

File Systems in User Space
Paul Eggert, Twin Sun, D. Stott Parker, University of 
California, Los Angeles

9:00 am - 10:20 am [track 3]

Invited Talk:  Resource Discovery and Network 
Measurement in the Global Internet
Mike Schwartz, University of Colorado, Boulder

Several experimental Internet resource discovery 
systems will be described.  Emphasis will be on 
techniques developed to characterize information 
automatically and to leverage the information in its 
natural state of distribution.  The talk includes 
discussion of a number of network measurement studies 
that focus on how people use Internet services, and on 
changes in Internet connectivity and service offerings.

10:20 am - 10:45 am  Break

10:45 am - 12:05 pm  [track 1]

Overhead
Session Chair:  Rob Kolstad, Berkeley Software Design, 
Inc.

UNIX Kernel Support for OLTP Performance
Tom Rogers, Hyuck Yoo, Sun Microsystems, Inc.

A Study of Overheads in DECStation Network Software
Jonathon Kay, Joseph Pasquale, University of California, 
San Diego

The BSD Packet Filter:  A New Architecture for User-
level Packet Capture
Steve McCanne, Van Jacobson, Lawrence Berkeley 
Laboratory

10:45 am - 12:05 pm  [track 2]

I/O, I/O
Session Chair:  Jeff Schwab, Purdue University

The Organization of Networks in Plan 9
Dave Presotto, Phil Winterbottom, AT&T Bell 
Laboratories

Handling Removable Media in Solaris
Howard Alt, SunSoft, Inc.

An Advanced Tape Cataloging System for UNIX Systems
Christopher J. Calabrese, AT&T Bell Laboratories

10:45 am - 12:05 pm  [track 3]

Invited Talk:  From Blazon to PostScript
Daniel V. Klein, LoneWolf Systems

Well defined languages for describing pictures have been 
around since at least the 11th century.  This talk 
describes the progression of drawing languages starting 
with Blazon (a heraldic language) through modern-day 
Postscript, with digressions into similar languages for 
knitting and weaving, cattle brands, hieroglyphics, and 
the numerous encodings that have evolved over the 
centuries.  This is both a technical and a "fun" talk.

12:05 pm - 1:30 pm  Lunch

1:30 pm - 2:50 pm [track 1]

Kernel Improvements
Session Chair:  J. Kent Peacock, Intel Multiprocessor 
Consortium

Efficient Kernel Memory Allocation on Shared-Memory 
Multiprocessors
Paul E. McKenney, Jack Slingwine, Sequent Computer 
Systems, Inc.

An Implementation of a Log-Structured File System for 
UNIX
Margo Seltzer, Marshall Kirk McKusick,, University of 
California, Berkeley, Keith Bostic, BSDI, & Carl Staelin, 
Hewlett-Packard

Exploiting In-Kernel Data Paths to Improve I/O 
Throughput and CPU Availability
Kevin Fall, Joseph Pasquale, University of California, San 
Diego

1:30 pm - 2:50 pm [track 2]

Invited Talk:  A History of UNIX
Greg Rose, Australian Computing & Communications 
Institute

The consistent exponential growth in the popularity of 
UNIX systems means that the average user knows little 
of its actual history.  Much of the UNIX operating system 
has its roots either in the evolutionary process leading 
to the current versions, or in the political environment 
prevailing while that evolution was happening.  By 
exploring the history of this development, a number of 
otherwise obscure things about UNIX become much 
clearer.

1:30 pm - 2:50 pm [track 3]

Invited Talk:  The Odin System
Geoff Clemm, Bellcore

This talk will introduce Odin.  Odin is a replacement for 
Make. It is simpler, faster, and more powerful than Make, 
especially for large, complex projects.  Specific 
differences between Odin and Make include:  dependency 
computation, validity of derived objects, disk space 
useage, file variants, and file sharing.

2:50 pm - 3:30 pm  Break

3:30 pm - 5:00 pm

Debate Followed by Panel Discussion:
Intellectual Property
Participants include William Ryan, General Attorney, 
Intellectual Property Law, AT&T Bell Laboratories 

Friday, January 29

9:00 am - 10:20 am [track 1]

Information Discovery
Session Chair:  Jim Duncan, Pennsylvania State 
University

Fremont:  A System for Discovering Network 
Characteristics and Problems
David C. M. Wood, Michael F. Schwartz, University of 
Colorado, Boulder

The Enterprise Distributed User Directory Service
C. Mic Bowman, Chanda Dharap, Pennsylvania State 
University

Essence:  A Resource Discovery System Based on 
Semantic File Indexing
Darren Hardy, Michael F. Schwartz , University of 
Colorado, Boulder

9:00 am - 10:20 am [track 2]

Monitoring
Session Chair:  Dick Dunn, eklektix

Hardware Profiling of Kernels
Andrew McRae, Megadata Corporation

A Randomized Sampling Clock For CPU Utilization 
Estimation and Code Profiling
Steven McCanne, Chris Torek, Lawrence Berkeley 
Laboratory

Fault Interpretation:  Fine-grain Monitoring of Page 
Access
Daniel R. Edelson, INRIA

9:00 am - 10:20 am [track 3]

Invited Talk:  Highlights from the USENIX Filesystems 
Workshop, May 1992
Chaired by Peter Honeyman, CITI, University of Michigan

10:20 am - 10:45 am  Break

10:45 am - 12:05 pm  [track 1]

Filesystems, II
Session Chair:  Matthew Blaze, AT&T Bell Laboratories

UNIX Disk Access Patterns
Chris Ruemmler, John Wilkes, Hewlett-Packard

An Analysis of File Migration in a UNIX Supercomputing 
Environment
Ethan L. Miller, Randy H. Katz, University of California, 
Berkeley

HighLight:  Using a Log-structured File System for 
Tertiary Storage Management
John Kohl, University of California, Berkeley & Digital 
Equipment Corporation, Carl Staelin, Hewlett-Packard, & 
Michael Stonebraker, University of California, Berkeley

10:45 am - 12:05 pm  [track 2]

O/S Implementations
Session Chair:  Steve McDowell, Exlog, Inc.

An OSF/1 UNIX for MPP Systems
David Black, Paulo Guedes, John LoVerso, Durriya 
Netterwala, Faramarz Rabii, Paul Roy, Michael Barnett, 
Brad Kemp, Mike Leibensperger, Chris Peak, Roman 
Zajcew, Locus Computing Corporation

An Implementation of UNIX on an Object Oriented 
Operating System
Yousef A. Khalidi, Michael N. Nelson, Sun Microsystems, 
Inc.

The Nachos Instructional Operating System
Wayne A. Christopher, Steven J. Procter, Thomas E. 
Anderson University of California, Berkeley


10:45 am - 12:05 pm  [track 3]

Invited Talk:  MIME & Metamail: Moving Multimedia Mail 
into the Mainstream?
Nathaniel S. Borenstein, Bellcore

Most users continue to live in a text-only world, at least 
for email.  MIME (Multipurpose Internet Mail Extensions) 
provides a standard format for multimedia electronic 
mail. Early MIME implementations effect a transition 
from text to multimedia, but the overall task is 
enormous - requiring nothing less than the replacement 
of ASCII as the "common denominator."  This talk 
provides an overview of MIME, then describes current 
MIME implementations and the remaining obstacles that 
separate us from the dream of universal multimedia 
communication.

12:05 pm - 1:30 pm  Lunch

1:30 pm - 2:50 pm [track 1]

Cache & Carry
Session Chair:  David S. H. Rosenthal, SunSoft, Inc.

The Design and Implementation of a Mobile 
Internetworking Architecture
John Ioannidis, Columbia University

Mobile Computing Environment Based on Internet Packet 
Forwarding
Hiromi Wada, Takashi Yozawa, Tatsuya Ohnishi, Yasunori 
Tanaka, Matsushita

The Compression Cache:  Using Online Compression to 
Extend Physical Memory
Fred Douglis, Matsushita

1:30 pm - 2:50 pm [track 2]

Invited Talk:  Highlights from the USENIX System 
Admistration Conference (LISA VI), October 1992
Chaired by Rob Kolstad, Berkeley Software Design, Inc.

1:30 pm - 2:50 pm [track 3]

Invited Talk: Object Databases: More Than a Shift in 
Modeling Paradigm
David J. Jordan, AT&T Bell Laboratories

Migrating from relational to object database technology 
involves more than just applying the object paradigm to 
conceptual database schema design.  A key factor is the 
choice of language used for specifying object semantics, 
and where the resulting functionality executes - in the 
client applications or database server - potentially 
yielding database transparency and reduced application 
development costs.  The presentation will provide a 
conceptual overview of object databases and how they 
differ from current relational technology so one can 
better determine which technology is more appropriate 
for a particular application.

2:50 pm - 4:00 pm  

CLOSING REMARKS