Education:

Bachelors of Science, 1991,Computer Science from SUNY Albany.

Masters of Science , 2002, Computer Science at Binghamton University (Thesis: Real Time TCP)

Skills:

Technologies

Operating System Kernel Development, Systems Networking, TCP/IP Protocols, GUI Development, Kernel Tracing, Systems Integration, C Library Development, etc.

Programming Languages

C/C++, Assembly (PPC, MIPS, Arm, Intel), Perl, Python, Ruby, Java, sed and awk, Tcl/Tk, Unix shell programming (bash, sh, ksh, csh,etc), Pascal, Lisp, Prolog, Haskell, etc.

Programming Utilities

Samba, GTK/Gnome, X Windows Motif, emacs, etc.

Operating Systems

Linux, AIX, Solaris, HP-UX, Windows 95/98/NT, Palm OS, etc.

Drivers

PCI, Ethernet, Serial, Watchdog, Timers and Discretes, etc.

Published articles:

Debugging the kernel using Ftrace (Part 1) (Part 2)
Secrets of the Ftrace function tracer
Using the TRACE_EVENT() macro (Part 1) (Part 2) (Part 3)
trace-cmd: A front-end for Ftrace
Using KernelShark to analyze the real-time scheduler
The x86 NMI iret problem
Internals of the RT Patch
Building Embedded Linux Systems

Experience:

Principal Software Engineer: (July 2006 - Current)

Red Hat, Inc.

Linux kernel developer.

Worked on developing the Xen hypervisor.
Created a port of lguest (linux hypervisor) for x86_64 (based off of Rusty Russells lguest).
Main developer on the Linux Real-Time patch.
Maintained the Real-Time patch for a year.
Current maintainer of the Real-Time patch stable releases
Created an internal tracing infrastructure and was accepted into mainline Linux called "ftrace".
Maintainer of ftrace.
Creator and maintainer of the Linux kernel TRACE_EVENT() macros
Given several seminars around the country on Real-Time Linux as well as ftrace.
Created the ftrace command line tool trace-cmd
Created the GUI front-end for trace-cmd called KernelShark
- Download trace-cmd and KernelShark from here
Created the Linux make option "localmodconfig" that disables modules not needed for the running kernel.
Created Linux test tool ktest.pl that is found in the Linux kernel source tree.

Senior Software Engineer: (July 2003-July 2006)

Kihon Technologies Inc.

Part owner of start-up company contracting in embedded operating system programming, customization of the Linux kernel, and writing Device Drivers.

Custom Linux Kernel Development: (Working with Siemens Germany)

Developed a custom version of the Linux kernel based on Ingo Molnar's PREEMPT_RT patch for use in Power Plant control systems.
Contributed several patches to Ingo's RT kernel to improve performance as well as bug fixes. See http://people.redhat.com/mingo/realtime-preempt

Embedded Software Engineer Contractor: (Working for TimeSys)

Merged TimeSys Real-Time Operating system with a fault tolerant system based on Linux 2.4.18.
Port TimeSys Linux to multiple Power PC Single Board Computers (SBC).

Senior Software Engineer: (March 2001-July 2003)

TimeSys Inc.

Board Support Packages

Kernel Development and Porting

Port the TimeSys Linux kernel to various Single Board Computers(SBC) (MIPS, ARM, Power PC).
Port the GNU tools suite to the various SBC (gcc, binutiles, glibc, bash, telnetd, ftpd, etc).
Develop drivers for proprietary devices on the SBC.
Write custom code to handle processors without a Translation Look-aside buffer (TLB), which include a dynamic linker embedded in the Linux kernel for programs to be loaded into memory at runtime.

Software Engineer: (1996-2001)

Lockheed Martin Federal Systems and Loral Federal systems

Advanced Technologies Department:

Consultant and System Designer

Design database cleansing solution utilizing multiple platforms including Linux, HP-UX and Windows NT/98 (Resulting in two Patent applications still in process).
Consulted in various programs including hand held wireless communications and virtual applications using wearable computers.
Designed enhancing algorithms to increase efficiency in TCP/IP communication on a reliable network.

Systems Engineering Advanced Technologies Department:

Lead Integrated Document Online Control System (IDOCS) Developer

Lead programmer, architect and developer for IDOCS.
- First implementation of automated document control as specified by Military Specifications.
Designed IDOCS and lead a team of programmers to develop, test and deliver IDOCS to Warner Robbins Air Force Base. IDOCS is now a standard configuration management tool for several projects through out Lockheed Martin Owego.
Ported IDOCS from AIX to Solaris and Linux.
Designed and developed an entity relational (ER) database back end server used for IDOCS.
Developed a daemon process for controlling the configuration management of multiple users on the IDOCS system.

Operational Task Tool Database Developer

Lead programmer, architect and developer for designing the database operations and layout.
Develop code in Tcl/Tk to interface with an Object Oriented Database.
Advised other team members on critical decisions.
Integrate a mutli-platform system for maximum efficiency.

Mission Planning Developer

Team lead of implementation of advanced routing and mission planning algorithms.
- These algorithms are now incorporated in avionics programs for routing and threat assessment.
Utilized a suite of tools for all phases of the development process: Design through to final testing.

Software Analyst: (1992-1996)

Ensco Inc.

Subcontractor with General Electric, IBM, Lockheed Martin and Loral.

Systems Engineering Advanced Technologies Department

Lead programmer, architect and developer for implementing a configuration management system around the RDD-100 database for use with Systems Engineers.
- This tool was helpful for Systems Engineers management of data and consistency checks of the integrity of the database.

Avionics Engine Controls

Programmed Jovial modules for control systems of military vehicles.
Unit tested Jovial and 1553 Assembly modules.

Related Experience:

Found bugs and submitted patches for Linux versions 2.4, 2.5 and 2.6.
Submitted patches for the Gimp Tool Kit (GTK) Widgets that have been implemented.
Submitted facilitating utilities for programming with GTK.
Enjoy writing code on my own time and tinkering with the Linux kernel.
Developing an object oriented database management information system as an extra curricular activity, implementing full Object Oriented Design using a non Object Oriented Language, then converting the result to C++.
Created an experimental transfer protocol implementing Credit and Negative Acknowledgments.
Set up a personal firewall, http server, ftp server, game server, and DNS server.