物理服务器扩容内存后free -h却没有新内存可用——这绝非罕见的运维事故。本文从memory_block抽象出发,深入剖析isolate→migrate→free的迁移流水线和Auto NUMA重平衡策略,覆盖物理DIMM热插拔、CXL Type 3分层内存、virtio-mem虚拟机动态内存三大生产场景
Deep analysis of Linux cgroups v2: architecture, unified hierarchy, memory/io/cpu/pids controllers, BPF integration, container runtime integration, PSI-based autoscaling, migration from v1, and production debugging methodologies.