Benchmarking1 articleMar 13, 2026 · 13 min readNative C++ vs WASM Filters in Envoy: A Performance BenchmarkWe fork Envoy, build a custom native C++ filter, then build the same filter as a WASM module. Here's exactly how they compare on latency, throughput, memory, and CPU — with the full benchmark methodology.envoy wasm performance c++ benchmarking