Introducing ebpf_exporter, enabling low level eBPF based metric collection from Linux kernel into Prometheus.
Tracing System CPU on Debian Stretch
How an innocent OS upgrade triggered a cascade of issues and forced us into tracing Linux networking internals.
eBPF, Sockets, Hop Distance and manually writing eBPF assembly
A friend gave me an interesting task: extract IP TTL values from TCP connections established by a userspace program. This seemingly simple task quickly exploded into an epic Linux system programming hack.