New replayer/srr.py drives a Poisson session-arrival load against the
existing proxy, with strict per-session turn sequentiality, explicit
warmup/steady/drain windows, and per-arrival fresh session_id +
request_id so APC/session-affinity counters are not contaminated by
repeated draws from the trace pool. Writes window_summary.json with
attempted/completed/errored split by window so latency tails can be
read on the steady-state window only.
Required by Batch 4 SRR sweep; trace-timestamp dispatch in replay.py
cannot drive arrival rate independently.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Gahow Wang
f42c715ec1