w3ador

Projects

Things I maintain or have contributed to, in the order they still matter.

pathprobe
A small tool that measures per-hop MTU and reports where PMTUD breaks. Single static binary, no dependencies.
tailwatch
Latency aggregation for anycast fleets: per-node p50/p99 with change detection. Used internally on four sites.
kernel-notes
Long-form notes on io_uring, XDP and the operational cost of moving work out of the socket layer.