https://robert.ocallahan.org/2024/06/real-time-settlers.html Eyes Above The Waves Robert O'Callahan. Christian. Repatriate Kiwi. Hacker. Archive 2024 June * So You Want To Build A Browser Engine * Real-Time Settlers Of Catan April * Auckland Waterfront Half Marathon 2024 * Whanganui River Journey 2024 2023 December * Rees-Dart Track 2023 * Caples/Routeburn Track 2023 * Abel Tasman Kayaking November * Mount Pirongia 2023 * Blog Migrated April * Why I Signed The "Pause" Letter * Auckland Waterfront Half Marathon 2023 2022 December * Travers-Sabine Circuit 2022 * Paparoa Track September * Aotea Track 2022 * Success, Privilege And God July * Turangi Road Trip May * Round The Mountain Track: Ups and Downs and a Twist Ending April * New Zealand's COVID Strategy Worked (But It Could Have Been Better) March * Motutapu Island Camping Trip January * Motatapu Track * Hump Ridge Track * The End Of The Runway 2021 December * Mt Pirongia 2021 * Do We Really Need A Link Step? November * Some Observations On The NZ CovidPass System October * How WHO Failed September * Emulating AMD Approximate Arithmetic Instructions On Intel * rr Trace Portability: Diverging Behavior of RSQRTSS in AMD vs Intel June * Spectre Mitigations Murder *Userspace* Performance In The Presence Of Frequent Syscalls * Tama Lakes Winter Tramp 2021 May * Forward Compatibility Of rr Recordings * Lake Waikaremoana 2021 April * Print Debugging Should Go Away * Demoing The Pernosco Omniscient Debugger: Debugging Crashes In Node.js And GDB * Visualizing Control Flow In Pernosco March * On-Premises Pernosco Now Available; Reflecting On Application Confinement * What Would Jesus Do ... About Vaccination? February * Mercer Bay January * Dehydration * Tongariro Northern Circuit 2021 2020 December * Rees-Dart Track * Kepler Track 2020 * Exploiting Precognition In Binary Instrumentation Of rr Replays November * rr remix: Efficient Replay-Only Binary Instrumentation * DOM Recording For Web Application Demos * Debugging With Screenshots In Pernosco * rr Repository Moved To Independent Organisation * Pernosco Now Available For Individual Developers * Auckland Half Marathon 2020 October * Pouakai Circuit 2020 * The Parable Of The Two Bus Drivers September * New Zealand's Long Term COVID19 Strategy August * Surprising Words In Luke 1:16-17 * What's So Amazing About Mark 10:32 * Scaling Debuginfo For Zero-Cost Abstractions * What Is The Minimal Set Of Optimizations Needed For Zero-Cost Abstraction? June * Cape Brett 2020 * My Google Maps Disaster May * Why Forking HTML Into A Static Language Doesn't Make Sense * Omniscient JS Debugging In Pernosco April * Have Some Humility, Mike Hosking March * What If C++ Abandoned Backward Compatibility? * Debugging Gdb Using rr: Ptrace Emulation January * Static Customization Of Function Signatures In Rust * Updating Pernosco To Rust Futures 0.3 2019 December * A Risk Of Transactional Politics For Christians * Nelson Lakes Tramping: Lessons And Observations * Nelson Lakes Tramping: Travers-Sabine Circuit * Nelson Lakes Tramping: Angelus Basin November * Your Debugger Sucks * Supercharging Gdb With Pernosco * The Power Of Collaborative Debugging * Omniscient Printf Debugging In Pernosco * The BBC's "War Of The Worlds" * Explaining Dataflow In Pernosco October * Improving Debugging Workflow With Pernosco * Auckland Half Marathon 2019 * Pernosco Demo Video * Food In Auckland 2019 * Pouakai Circuit * Is Richard Dawkins A Moral Realist? September * Dissatisfied With Docker July * Cape Brett 2019 * Auckland Rust Meetup: "Building An Omniscient Debugger In Rust" June * Stack Write Traffic In Firefox Binaries * Winter Tramp: Waihohonu Hut To Tama Lakes May * A Few Comments On "Sparse Record And Replay With Controlled Scheduling" * Microsoft's Azure Time-Travel Debugging * Don't Call Socially Conservative Politicial Parties "Christian" * Debugging Talk At Auckland Rust Meetup April * Goodbye Mozilla IRC * Update To rr Master To Debug Firefox Trunk * Mysteriously Low Hanging Fruit: A Big Improvement To LLD For Rust Debug Builds * Rust Discussion At IFP WG2.4 March * Marama Davidson And The Truth About Auckland's History February * Banning Huawei Is The Right Decision * Rust's Affine Types Catch An Interesting Bug * Mt Taranaki 2019 January * Experimental Data On Reproducing Intermittent MongoDB Test Failures With rr Chaos Mode 2018 December * Vox On Nietzsche * Hollyford Track * Milford Track 2018 November * Capitalism, Competition And Microsoft Antitrust Action * Raglan * Comparing The Quality Of Debug Information Produced By Clang And Gcc * What Is "Evil" Anyway? * Comments on "REPT: Reverse Debugging of Failures in Deployed Software" October * Auckland Half Marathon 2018 * Problems Scaling A Large Multi-Crate Rust Project * Harmful Clickbait Headline About IT Automation * The Fine Line Between Being A Good Parent And A Bad Parent * The Costs Of Programming Language Fragmentation September * More Realistic Goals For C++ Lifetimes 1.0 * The Danger Of GMail's "Smart Replies" * "Crazy Rich Asians" * Rangitoto Fog August * Long Live The Desktop Computer * ASAN And LSAN Work In rr * Diagnosing A Weak Memory Ordering Bug * The Parallel Stream Multiplexing Problem July * Gerv * Why Isn't Debugging Treated As A First-Class Activity? June * Yosemite: Clouds Rest And Half Dome * Bay Area Visit * Crypto-Christians In Tech May * rr 5.2.0 Released * Intel CPU Bug Affecting rr Watchpoints * Update: Pernosco * rr Chaos Mode Improvements * Research Wishlist: A Filesystem For Efficient Host-Guest File Sharing * Priority Is Overrated April * rr Trace Portability: x87 "Data Pointer" Broken On Skylake * CPUID Features, XSAVE, And rr Trace Portability * Heaphy Track #2 * Payment Express's "Account2Account" Is Bad For Security March * Speeding Up `dwarfdump` With Rust * Too Many DWARF Packaging Options * "Zach": AI Fraud In Christchurch * Tongariro Northern Circuit #2 January * Neal Stephenson's "Seveneves" (Mild Spoilers) * Long-Term Consequences Of Spectre And Its Mitigations * Captain Sonar * Hooray For cargo build --all-targets * The Fight For Patent-Unencumbered Media Codecs Is Nearly Won * Ancient Browser-Wars History: MD5-Hashed Posts Declassified * On Keeping Secrets * Meltdown/Spectre Needs Better Disclosure 2017 December * Mixed Blessings Of Greenfield Software Development * Marriage On Credit * Routeburn-Caples * rr 5.1.0 Released * Maintaining An Independent Browser Is Incredibly Expensive November * In Praise Of Rust's structopt For Command Line Parsing * Tararua Southern Crossing October * Auckland Half Marathon 2017 * Microsoft's Chrome Exploitation And The Limitations Of Control Flow Integrity * "Slow To Become Angry" * Type Safety And Data Flow Integrity * Legacy Code Strikes Again * Thoughts On Microsoft's Time-Travel Debugger * Building On Rock, Not Sand * Microsoft Using Chromium On Android Is Bad For The Web September * Complaining About Twitter Again * Dreaming The Singularity * Facebook's "Explaining React's License" Doesn't * Some Opinions On The History Of Web Audio * Sonny The Prophet * rr 5.0 Released * rr Trace Portability August * Fedora/Ubuntu Kernels Work With rr Again * Igloos Are Hard * Epsom Electorate Town Hall Meeting * Public Service Announcement: "localhost" Is Not Necessarily Local * When Virtue Fails * Stabilizing The rr Trace Format With Cap'n Proto July * Selecting A Compression Algorithm For rr * Upstream Stable Kernels Work With rr Again * Let's Never Create An Ad-Hoc Text Format Again * Confession Of A C/C++ Programmer * Usenix ATC 2017 * An Inflection Point In The Evolution Of Programming Langauges * Bay Area Progress Report June * Patch On Linux Kernel Stable Branches Breaks rr * Rising Tolerance For Static Analysis False Positives? * Lazy Religion Tropes In Mass Media * Is The x86 Architecture Sustainable? * New "rr pack" Command * How I Found A 20-Year-Old Linux Kernel Bug * Another Case Of Obscure CPU Nondeterminism * WebAssembly: Mozilla Won May * Should Debuggers Report Idempotent Writes? * A Couple Of Papers About Commodity Multicore Record And Replay, And A Possible Way Forward * rr Usenix Paper And Technical Report * Obscurity Inhibits Persuasion * Perceptions Of Violent Crime April * Call Out China For Their Treatment Of NK Escapees * One Does Simply Walk Into Mordor * Rust Optimizations That C++ Can't Do (Version 2) * Rust Optimizations That C++ Can't Do * Pararaha Valley * Let's Make NZ More Expensive For Tourists March * The Parable Of The Workers In The Vineyard Really Is About Grace * Blogging Vs Academic Publishing * Thoughts On "Java and Scala's Type Systems are Unsound" And Fuzz Testing * Deterministic Hardware Performance Counters And Information Leaks * Using rr To Debug Go Programs February * Against Online Voting * 306 Points In "Lords Of Waterdeep" * "New Scientist" And The Meaning Of Life * What Rust Can Do That Other Languages Can't, In Six Short Lines * rr 4.5.0 Released * I Really Admire Jehovah's Witnesses January * A Followup About AV Test Reports * Tripling Down Against USA Conference Hosting * Rustbelt Is Hiring * rr Talk At Auckland C++ Meetup, February 21 * Really, Please Stop Booking International Conferences In The USA * Disable Your Antivirus Software (Except Microsoft's) * Browser Vendors And Business Interests * Browser Vendors Are Responsible For The State Of Web Standards * Parenting Notes * Cheltenham Beach * How China Can Pressure North Korea * Is CMS Software Generally Really Bad? 2016 December * On "Arrival" * October rr Talk Online * Disemploy The Middle/Upper Class * Some Comments On "Sapiens" November * Overcoming Stereotypes One Parent At A Time * Stop Saying "Xs Do Y" Disingenuously * Handling Hardware Lock Elision In rr * Misinterpreting Close Contests * Welcoming Richard Dawkins * Dangerous Permissions October * Auckland Half Marathon #4 * Implications Of ASLR Side-Channel Attacks * Valuing America * Dell, Your Website Security Is Broken * Pivoting To Cyber-Forestry * Ironic World Standards Day * Tawharanui Revisited * rr Paper: "Lightweight User-Space Record And Replay" * Bay Area Talks About rr And Beyond, October 2-7 * rr 4.4.0 Released September * Is Apple A Christian Environment? * Theism And The Simulation Argument * Auckland Food 2016 August * Avoiding Cache Writebacks For Freed Memory * Random Thoughts On Rust: crates.io And IDEs * Saga Of The Exiles * False Accusations * Why I Don't Watch "Game Of Thrones" * Changing Attitudes To Pornography July * The True Story Of "Amazing Grace" * Further Improving My Personal Digital Security * Ordered Maps For Stable Rust * Itanium Zombie Claims Another Victim June * rr 4.3.0 Released * Nexus 5X vs Wettest June Hour In Auckland's History * Relearning Debugging With rr * Handling Read-Only Shared Memory Usage In rr * Dear Ubuntu, Please Fix Your Debuginfo Packaging * Democracy Is Impressive * PlayCanvas Is Impressive * Managing Vast, Sparse Memory On Linux * Nastiness Works * "Safe C++ Subset" Is Vapourware * Mt Pirongia * Whanganui River Journey * Some Dynamic Measurements Of Firefox On x86-64 * Are Dynamic Control-Flow Integrity Schemes Worth Deploying? * How To Track Down Divergence Bugs In rr * The Diving Bell And Twitter * Research Needed: A Meta (Dis) Assembler May * Men Behaving Badly * Stop Booking Conferences In The USA * Data > Personal Anecdotes > Media Anecdotes * x86-64 SSE/AVX Register Usage * Autonomous Vehicles: I Want To Believe * Data On x86-64 Register Usage * Pain Management * History Rhymes April * Android's Update System Is Ridiculous * Leveraging Modern Filesystems In rr * Skylake Erratum Affecting rr * GNOME High-DPI Issues March * Using rr To Debug rr * Obituary * Running Firefox For Windows With rr * SIGKILL And PTRACE_EXIT_EVENT * Digital Spring Cleaning * My Self-Identification * Leaving Mozilla February * "These Bugs Are Impossible To Fix Without rr" * Deeper Into Chaos * Rewrite Everything In Rust * Introducing rr Chaos Mode * rr Talk At linux.conf.au * rr 4.1.0 Released * Reflecting On The The Lord Of The Rings Movies * Rakiura Track * Kepler Track January * Making Honest Money With The Internet Of Things * Kereru * innerText: Cleaning A Dark Corner Of the Web 2015 December * Feelings Versus Facts At Christmas * Abel Tasman Track * CppCast rr Podcast November * Even More rr Replay Performance Improvements! * rr Replay Performance Improvements * Debugging Leaks With rr * TPPA Protest * Perfection In Imperfection * rr In VMWare: Solved! * An Extraordinary Sunday October * Research Projects That Should NOT Be Funded * KPMG Gets It Totally Wrong About Pittsburgh And Auckland * rr 4.0 Released With Reverse Execution * Hobbiton * Heaphy Track September * Apple's Next Frontier: Fusion * Booting Fedora 22 On A Lenovo ThinkCentre M53 August * Hooray For WebExtensions * Parenting July * Two Reverse-Execution Optimizations * Midwinter Road Trip * rr Talk Video From TCE 2015 June * Whistler Hike * Bug In Newer Linux Kernels Affecting rr * Israel, Part 3 * Israel, Part 2 * Israel, Part 1 * Small Change To rr Behavior May * rr Performance Update * BlinkOn 4 * Using rr To Debug Dropped Video Frames In Gecko * Piha Night Walk April * rr 3.1 Released * Another VMWare Hypervisor Bug * Reverse Execution And Signals March * Eclipse + Gecko = Win * Paper Titles * Auckland University rr Talk Next Week * The Problems Of Significance Testing (aka What's Wrong With Computer Science) * Debugging Gecko With Reverse Execution * What Is The Endgame Of Weak Computer Security? February * Great Barrier Island * Computer Industry T-Shirt Museum January * Routeburn-Greenstone 2014 December * Is Human Immortality Possible? * Queen Charlotte Track * rr 3.0 Released With x86-64 Support * Portland * We Aren't Really Going To Have "Firefox On iOS" November * The Rise Of "Versing" * Mount Te Aroha * Relax, Scaling User Interfaces By Non-Integer Scale Factors Is Okay * Sci-Fi * HTML5 Video Correctness Across Browsers * Auckland Half Marathon --- Barefoot October * Are We Fast Yet? Yes We Are! * Pinnacles Tramp #2 * Photos From North America * Back In New Zealand September * Upcoming rr Talk * rr 2.0 Released * VMWare CPUID Conditional Branch Performance Counter Bug August * Milestones On The Road To Christianity * cf1e5386ecde9c2eb9416c9b07416686 * Choose Firefox Now, Or Later You Won't Get A Choice July * Multiverses And Anthropic Reasoning * Implementing Scroll Animations Using Web Animations May * Unnecessary Dichotomy * Against The "Internet Of Things" * Milford Track April * Getting Back To Work * Fighting Media Narratives * Mozilla Matters * Responsible Self-Censorship March * Conflict * Introducing rr * Mozilla And The Silicon Valley Cartel * Taroko National Park * Maokong * Introducing Chaos Mode * My Linkedin Account Is Dead, And Why Is Google Being Stupid? * Fine-Tuning Arguments * Internet Connectivity As A Geopolitical Tool * Te Henga Walkway * Q&A Panel At ACPC This Friday February * 3 Mile Limit * World Famous In Newmarket * Implementing Virtual Widgets On The Web Platform * Mozilla At Motuihe * Camels January * Lake Waikaremoana * Web Specifications And The Frame Problem * Tiritiri Matangi Island * Boating 2013 December * We Need A "Dumb Device" Movement * Blood Clot * Why I Don't Worry About Global Warming (Much) * One Day The Luddites Will Be Right * WebRTC And People-Oriented Communications * Another Knee-Jerk Reaction To International Rankings * Does John Banks Only Do Good? * Wanaka November * Mozillians At The Tongariro Crossing And Orakei Korako * A Tale Of Two Cities October * Summit Day Zero * Prescriptive Vs Descriptive Frameworks * Avoiding Burnout * Travel Madness September * The Forge Of Disappointment * A Tip For The Surivial Of Humanity * Unexpected Visitors * Debugging Transient Rendering Issues With GNOME Shell Screencasts * Servant Leadership August * Indoi * Creating Screencasts On Linux * SVG-In-OpenType Progress Update * Mozilla Code Reviews Talk On Air Mozilla * Prepare To Stop * Mozilla Engineering Culture Talk Now Online July * A Shock Of The Ordinary * Happy Days * Avoiding Copies In Web APIs * Movie Picoreviews * Contributing Advocacy June * Gradual Changes Afoot * Developer Parallelism * Meeting Absenteeism May * Blink, PNaCl, And Standards * Taiwan Travelogue * Travel * The Direct Route * Web Audio Progress April * Rotorua * Hunuas Tramp * Upcoming Travel Plans * Google Vs New Zealand * The Chris Problem * The Future Of Cheating * Blink March * Mitigating Control-Flow Exploits With x86 ISA Extensions * RIP Crazy Noodle * Getting The Facts * Why I Work * Seeking Relevance * There Is No Such Thing As Computer Security * Technical Advantages Of A Web-Only Platform February * A Small Example Of The Value Of Browser Engine Diversity * And Then There Were Three * Waiheke Island Sculpture Trail * SVG In OpenType: A New Approach To SVG Fonts January * Mount Taranaki * Optimizing Bugzilla Usage 2012 December * Great Barrier Island November * More Movie Reviews * What To Do When Visiting New Zealand October * Trouble Ahead For SVG Stacks (Maybe) * Motutapu Camping * Karekare September * Web Audio In Firefox * Blast From The Past August * Granularity Of Import Directives In Programming Languages * A Confession Of Sorts * Attention NZ TV Sports Interviewers July * In-Flight Movies * North Head To Takapuna * Tawharanui * Muriwai June * Bolo * Computer Science In Beijing * Google Plus Spam * Experiencing Beijing * To Beijing * Leaving Linkedin * The City And The City * Mangawhai May * The Canvas getContext() Mistake * Firefox Vs The New York Times * Crosbie's Hut * Accelerated Scrolling In Firefox: Past, Present And Future * Sad And Pathetic Machines April * Korea * The Internet Experiment Has Failed March * Retrospective On Our Trip To Europe * Wakaraanga Creek * I'm Back * Retro Movie Showcase * Requiring Planet Mozilla Content To Be Mozilla-Project-Related February * Movie Overdose * Upcoming Travel * Foo Camp, ECOOP, And Conferences * Alternatives To Supporting -webkit Prefixes In Other Engines * The Problem With Counting Browser Features January * Mozilla Tree Adventures * You Know You're In Australia When... * MediaStreams Processing Demos * "Cut The Rope" and HTML5 Audio * Risk Tolerance 2011 December * A Case For Non-Fatal Assertions * Revelation * Television * Love * Developernomics November * Moves In Computer Science Education * Politics * ITEX And TVNZ * Latency Of HTML5