Ignite - How Fast Was My Kubernetes?
summary
Microbenchmarks run PostgreSQL, CockroachDB and others on bare metal, local volumes, and cloud‑native stacks using Ceph with Rook. Local volumes show near bare‑metal file‑IO but generate about 10–15% slower transactional performance from added overlay networking and connection latency. Ceph/Rook adds redundancy at the cost of roughly latency roughly doubles for short synchronous transactions, which can halve throughput on some workloads. Tests use pgbench and TPC‑style measures on an office cluster so the numbers reflect real deployments rather than toy simulations.
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