Linux

• Kernel Bypass Networking: DPDK, io_uring, and the RDMA Revolution · 2025-02-10

  Dive into how modern systems escape the kernel networking stack for microsecond-scale performance: DPDK's poll-mode drivers, io_uring's submission rings, RDMA's one-sided operations, and the trade-offs each approach demands.

• eBPF Internals: The In-Kernel Verifier, Safety Proofs, JIT Compilation to Native Code, Map Types, and XDP/TC Hooks · 2021-05-08

  A deep exploration of eBPF internals — how the Linux kernel verifier proves safety, the JIT compilers that turn BPF bytecode into native instructions, the map infrastructure that enables stateful processing, and the XDP/TC hooks that make programmable networking possible.

• System Calls: The Gateway Between User Space and Kernel · 2021-04-18

  An in-depth exploration of how applications communicate with the operating system kernel through system calls. Learn about the syscall interface, context switching, and how modern OSes balance security with performance.

• Container Internals: Linux Namespaces, cgroups v2, OverlayFS, and the OCI Runtime Spec Under the Hood · 2020-09-28

  A deep exploration of the Linux kernel primitives that power container runtimes — the seven namespace types, cgroups v2 resource control, OverlayFS copy-on-write storage, and the OCI runtime specification that ties them together.