linux

2 posts

EBPF March 21, 2026

eBPF for Production Debugging: Kernel Instrumentation Without Rebooting

How eBPF changed production debugging — attaching probes to kernel functions, tracing syscalls, measuring latency histograms, and XDP packet processing, all without touching application code or rebooting.

3 min read

ASSEMBLY March 21, 2026

Writing a 16-bit Real Mode Bootloader in x86 Assembly

The first 512 bytes that run when your machine powers on. A walkthrough of x86 real mode, the BIOS interrupt interface, segment:offset addressing, and what it takes to load a second stage.

2 min read