https://www.youngju.dev/blog 천천히 올바르게. AI Researcher & DevOps Engineer Youngju's tech blog. GPU/CUDA, LLM, MLOps, Kubernetes AI workloads, distributed training, and data engineering. ko fjvbn2003@gmail.com (Youngju Kim) fjvbn2003@gmail.com (Youngju Kim) Sat, 16 May 2026 00:00:00 GMT https://www.youngju.dev/blog/culture/2026-05-16-software-debugging-mastery-2026-gdb-lldb-rr-pernosco-pdb-chrome-devtools-bun-inspect-dap-deep-dive.en https://www.youngju.dev/blog/culture/2026-05-16-software-debugging-mastery-2026-gdb-lldb-rr-pernosco-pdb-chrome-devtools-bun-inspect-dap-deep-dive.en A May 2026 survey of the software debugging stack and the mindset behind it. Reverse and time-travel debugging with GDB 15, LLDB 19, rr, and Pernosco; Chrome DevTools 2025 with AI assistance and MCP; built-in inspectors in Bun, Deno, and Node; the pdb / pdbpp / ipdb / pudb / debugpy lineup for Python; Rust dbg! and tokio-console; Go Delve; Java JFR + JMC; eBPF with bpftrace and Pixie; Valgrind, ASan, MSan, TSan, UBSan; the DAP protocol; and AI-assisted debugging. All anchored to hypothesis-driven scientific debugging and to real field reports from Coupang, Naver, Kakao, Cookpad, Mercari, and HSAS. Sat, 16 May 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) debugginggdblldbrrpernoscopdbchrome-devtoolsbundaptime-travel-debuggingreverse-debugging2026deep-diveenglish https://www.youngju.dev/blog/culture/2026-05-16-software-debugging-mastery-2026-gdb-lldb-rr-pernosco-pdb-chrome-devtools-bun-inspect-dap-deep-dive.ja https://www.youngju.dev/blog/culture/2026-05-16-software-debugging-mastery-2026-gdb-lldb-rr-pernosco-pdb-chrome-devtools-bun-inspect-dap-deep-dive.ja 2026 年 5 月時点のソフトウェアデバッグツールと方法論を一本にまとめます。GDB 15 / LLDB 19 / rr / Pernosco のリバースおよびタイムトラベルデバッグ、Chrome DevTools 2025 の AI アシストと MCP、Bun と Deno と Node のビルトインインスペクタ、Python pdb / pdbpp / ipdb / pudb / debugpy の比較、Rust dbg! と tokio-console、Go Delve、Java JFR + JMC、eBPF bpftrace と Pixie、Valgrind / ASan / MSan / TSan / UBSan、DAP プロトコル、AI デバッグまで。仮説駆動の科学的デバッグマインドセットと、クーパン / Naver / カカオ / Cookpad / Mercari / HSAS などの現場事例を軸に紹介します。 Sat, 16 May 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) debugginggdblldbrrpernoscopdbchrome-devtoolsbundaptime-travel-debuggingreverse-debugging2026deep-dive日本語 https://www.youngju.dev/blog/culture/2026-05-16-software-debugging-mastery-2026-gdb-lldb-rr-pernosco-pdb-chrome-devtools-bun-inspect-dap-deep-dive https://www.youngju.dev/blog/culture/2026-05-16-software-debugging-mastery-2026-gdb-lldb-rr-pernosco-pdb-chrome-devtools-bun-inspect-dap-deep-dive 2026년 5월 기준 소프트웨어 디버깅 도구와 방법론을 한 글에 정리합니다. GDB 15·LLDB 19·rr·Pernosco의 역방향 디버깅과 타임트래블, Chrome DevTools 2025의 AI 어시스트와 MCP, Bun과 Deno의 빌트인 inspector, Python pdb/pdbpp/ipdb/pudb 비교, Rust dbg!·tokio-console, Go Delve, Java JFR + JMC, eBPF bpftrace·Pixie, Valgrind·ASan·MSan·TSan·UBSan, DAP 프로토콜과 AI 디버깅까지 — 가설 기반(Hypothesis-Driven) 과학적 디버깅 마인드셋과 함께 실전 사례(쿠팡·네이버·카오톡·Cookpad·Mercari·HSAS) 중심으로 다룹니다. Sat, 16 May 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) debugginggdblldbrrpernoscopdbchrome-devtoolsbundaptime-travel-debuggingreverse-debugging2026deep-dive https://www.youngju.dev/blog/culture/2026-05-16-software-debugging-tools-gdb-lldb-rr-pernosco-replay-io-time-travel-asan-2026-deep-dive.en https://www.youngju.dev/blog/culture/2026-05-16-software-debugging-tools-gdb-lldb-rr-pernosco-replay-io-time-travel-asan-2026-deep-dive.en A full map of the 2026 debugging landscape in one read. From the undefeated reign of printf to interactive debugging with gdb/lldb, time-travel and omniscient debugging via rr/Pernosco/Replay.io, the ASan-vs-Valgrind tradeoff, dynamic tracing through perf/FlameGraph/eBPF/bpftrace/BCC, per-language tools like JFR, async-profiler, py-spy, and Delve, kernel debugging with kgdb/KASAN/crash, the OpenTelemetry boundary, AI-assisted debugging from Cursor/Copilot/Devin, internal debugging culture at Korean Naver/Kakao/LINE/Coupang/Baemin and Japanese live-debug talk culture — twenty-five chapters in one piece. Sat, 16 May 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) debugginggdblldbrrpernoscoreplay-iotime-travel-debuggingasanvalgrindebpfperfobservabilitydeveloper-tools https://www.youngju.dev/blog/culture/2026-05-16-software-debugging-tools-gdb-lldb-rr-pernosco-replay-io-time-travel-asan-2026-deep-dive.ja https://www.youngju.dev/blog/culture/2026-05-16-software-debugging-tools-gdb-lldb-rr-pernosco-replay-io-time-travel-asan-2026-deep-dive.ja 2026年のデバッグツール全地形を一望する。printf無敗神話からgdb・lldbのインタラクティブデバッグ、rr・Pernosco・Replay.ioが切り開いたタイムトラベル・オムニサイエントデバッグ、AddressSanitizer対Valgrindのトレードオフ、perf・FlameGraph・eBPF・bpftrace・BCCの動的トレーシング、JFR・async-profiler・py-spy・Delveの言語別ツール、kgdb・KASAN・crashのカーネルデバッグ、OpenTelemetryとの境界、Cursor・Copilot・DevinのAIデバッグ、ネカラクバ社内デバッグ文化と日本のライブデバッグカルチャーまで、25章で語り尽くす。 Sat, 16 May 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) debugginggdblldbrrpernoscoreplay-iotime-travel-debuggingasanvalgrindebpfperfobservabilitydeveloper-tools https://www.youngju.dev/blog/culture/2026-05-16-software-debugging-tools-gdb-lldb-rr-pernosco-replay-io-time-travel-asan-2026-deep-dive https://www.youngju.dev/blog/culture/2026-05-16-software-debugging-tools-gdb-lldb-rr-pernosco-replay-io-time-travel-asan-2026-deep-dive 2026년 디버깅 도구의 전 지형을 한 번에 본다. printf 무패 신화부터 gdb·lldb의 인터랙티브 디버깅, rr·Pernosco·Replay.io가 만든 타임트래블·옴니션트 디버깅, AddressSanitizer·Valgrind의 트레이드오프, perf·FlameGraph·eBPF·bpftrace·BCC의 동적 트레이싱, JFR·async-profiler·py-spy·Delve 같은 언어별 도구, kgdb·KASAN·crash의 커널 디버깅, OpenTelemetry와의 경계, Cursor·Copilot·Devin의 AI 디버깅, 네카라쿠배의 사내 디버깅 문화, 일본 커뮤니티의 라이브 디버깅까지 — 25개 챕터로 펼친다. Sat, 16 May 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) debugginggdblldbrrpernoscoreplay-iotime-travel-debuggingasanvalgrindebpfperfobservabilitydeveloper-tools