Chaos and Order 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) Fri, 12 Jun 2026 00:00:00 GMT https://www.youngju.dev/blog/linux/2026-06-12-linux-memory-hierarchy-swap-zram-hacks.en Hacking the Linux Memory Hierarchy — swap, zram, and the Wild Idea of Swapping to VRAM https://www.youngju.dev/blog/linux/2026-06-12-linux-memory-hierarchy-swap-zram-hacks.en The nbd-vram project, which exposes GPU VRAM as an NBD block device to use as swap, made waves on Hacker News. Starting from there, this post covers Linux memory management fundamentals, swappiness and zram/zswap tuning, OOM handling, cgroup v2 memory control, and container memory pitfalls — all hands-on. Fri, 12 Jun 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) linuxmemoryswapzramkernelperformancegpu https://www.youngju.dev/blog/linux/2026-06-12-linux-memory-hierarchy-swap-zram-hacks.ja Linuxメモリ階層ハック — swap、zram、そしてVRAMをスワップに使う逆転の発想 https://www.youngju.dev/blog/linux/2026-06-12-linux-memory-hierarchy-swap-zram-hacks.ja GPUのVRAMをNBDブロックデバイスとして公開しスワップに使うnbd-vramプロジェクトがHacker Newsで話題になりました。これを出発点に、Linuxメモリ管理の基礎、swappinessとzram/zswapのチューニング、OOM対応、cgroup v2メモリ制御、コンテナ環境の罠まで実践中心に整理します。 Fri, 12 Jun 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) linuxmemoryswapzramkernelperformancegpu https://www.youngju.dev/blog/linux/2026-06-12-linux-memory-hierarchy-swap-zram-hacks 리눅스 메모리 계층 해킹 — swap, zram, 그리고 VRAM을 스왑으로 쓰는 역발상 https://www.youngju.dev/blog/linux/2026-06-12-linux-memory-hierarchy-swap-zram-hacks GPU의 VRAM을 NBD 블록 디바이스로 노출해 스왑으로 쓰는 nbd-vram 프로젝트가 Hacker News에서 화제가 됐습니다. 이를 출발점으로 리눅스 메모리 관리의 기초, swappiness와 zram/zswap 튜닝, OOM 대응, cgroup v2 메모리 제어, 컨테이너 환경의 함정까지 실전 중심으로 정리합니다. Fri, 12 Jun 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) linuxmemoryswapzramkernelperformancegpu