Adopting heterogeneous computing resources: How we embrace ARM as a flavor and to accelerating cloud
summary
Kakao runs ~100,000 OpenStack instances across five to six regions with 70% used by Kubernetes and 95% of services containerized, sees low CPU but high memory per flavor, and adopts ARM to cut power while keeping throughput. A joint project with Access Labs builds Nova/Ironic drivers to present ARM servers as OpenStack flavors, ports Kubernetes images, and benchmarks HTTP and encoding workloads that match x86 throughput at much lower wattage. Hardware work includes an NXP DPDK-capable smart NIC and custom BMC integration to fit existing provisioning.
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