networkingebpfperformance
Zero-Copy Networking with eBPF and RDMA
How we keep packet paths out of the kernel hot loop without sacrificing observability.
menu_book8 min readSep 9, 2026
The networking tax
Enterprise stacks often pay a silent tax in copies, interrupts, and GC pauses. At exchange scale those microseconds become capital risk.
eBPF + RDMA
We pin classification and telemetry in eBPF while RDMA carries payload with verified memory registration. Observability stays in-band without re-entering the allocator.
Verification
TLA+ models the failure domains; chaos drills prove partition behavior before production cutover.
Benchmarks
P99 under load stays within the control budget with zero unexpected allocations on the hot path.