Ksynth is Kentik's lightweight, high-performance, synthetic monitoring agent. Ksynth monitors network performance with classic ICMP ping; traceroute using ICMP, TCP, or UDP packets; and a diagnostic called knock which performs a partial TCP handshake. Ksynth is also capable of application availability & performance monitoring via HTTP/1.1 & HTTP/2 requests, DNS queries, and TLS handshakes.
Ksynth is written in async Rust and can efficiently execute thousands of synthetic monitoring tasks on a single node with minimal resource utilization.