Olaf Dabrunz

Development of a universal tracing technology and tool (fctrace, vprobes). Research and development on version control / patch management for distributors and software contributors ("sideline development").

Developer for L3 Team, Main Developer for Bootloader Configuration, Developer for SUSE Linux (SLES 8 - SLES 11) on IBM Power

Developer for L3 Team (Development of a system supportability analysis tool; Linux kernel development for realtime processing (SLERT-10))

Main Developer for Bootloader configuration (implementation of multi-platform bootloader configuration (x86, PowerPC (IBM, Apple), S390 / zSeries, IA64) with YaST; Tools for Version Control Workflow and Packaging)

Developer for SUSE Linux (SLES 8 - SLES 11) on IBM Power (Linux kernel, toolchain, packages for Power; SLES on LPARs (virtual machines); Implementation of debuginfo packages for SLES)

Developer for CMS Infrastructure (CMS for Schüco GmbH, CMS for tesa AG)

Software Security / Software Analyst and Developer, (Statistics for Home-Banking Web-Frontend, Highly Available Secure Stocks Quote, Rework of Homebanking Security Infrastructure)

Projectmanager, Security and Software Engineer (Home-Banking Security Solution for Hamburger Sparkasse AG)

Project Software Engineer for the Public Key Certification Authority (DFN-PCA) Keyserver and Infrastructure

Project: Universal Function Call Tracing (fctrace)

Project: Sideline development (advanced patch management with TopGit)

Project: KVM virtualization on POWER (POWERKVM)

R&D project: Threaded interrupt handling for the Linux kernel: researched complete set of PC interrupt handling technologies and standards to find and fix Boot Interrupt Quirks for x86 (RT), leading to the inclusion of a threaded interrupt handling option in the mainline Linux kernel. A more detailed paper is planned.

Various production and research patches: libsatsolver (perl bindings with SWIG), ctags (ycp parser), fetchmail (IMAP IDLE), CVS (robustness: corrupt repo handling), quilt, w3m (sessions), knode (I18N); results available in SUSE Linux or openSUSE build service

Research and implementation of a non-equidistant smoothing algorithm for voice signal analysis, critique of results, suggested improvements for fundamental frequency determination in Praat. Support project for the PhD thesis of Ms. Emi Sakamoto, "An investigation of factors behind foreign accent in the L2 acquisition of Japanese lexical pitch accent by adult English speakers".

Created and implemented a double data rate input circuit for a telephony codec chip. Created a concept on how to apply this idea to DRAM I/O and decoder circuits.

Researched and optimized graphics blitting primitives and timing constraints for computer games written for the Commodore Amiga, used in "Future Tank" and probably others. Co-designed, built and sold a sound digitizer, adapted sampling software. Created a custom encoding and format for disk recording with several copy-protection features. Reverse-engineered the "PC-engine" gaming console hardware and created and built a game development cartridge with programming uplink. Wrote a character-set editing tool.