Operations

Performance Tuning Guide

Performance Tuning Guide

Tuning Principle

Tune by stage, not by aggregate latency only:

  • queue wait,
  • raft append/write,
  • quorum ack,
  • apply latency.

High-Value Controls

  • Put batching (ASTRAD_PUT_BATCH_*).
  • Adaptive controller targets (ASTRAD_PUT_TARGET_*).
  • QoS Tier-0 classification (ASTRAD_QOS_TIER0_*).
  • Profile mode (ASTRAD_PROFILE).
  • Background IO token budgets (ASTRAD_BG_IO_*).
  1. Baseline with fixed workload and capture stage metrics.
  2. Adjust one control family at a time.
  3. Re-run validation harness and compare against prior run ID.
  4. Promote only if improvements hold under non-smoke scenarios.