#Linux
4 posts in tag “Linux”.
Kernel Bypass Networking: DPDK, io_uring, and the RDMA Revolution
2025-02-10Dive 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
2021-05-08A 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
2021-04-18An 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
2020-09-28A 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.