Performance Sampling

Tencent Cloud Developer

Sep 21, 2022 · Cloud Computing

Guest PEBS: Precise Event-Based Sampling for KVM Virtualization

Guest PEBS, a virtualization‑aware implementation of Intel’s Precise Event‑Based Sampling integrated into KVM by Tencent Cloud, eliminates interrupt overhead and instruction‑skid, delivering low‑latency, fine‑grained hardware performance data inside virtual machines, enabling accurate profiling, latency reduction, and cost‑effective optimization for cloud workloads.