{
  "title": "OpenClaw 流式语音优化：脱敏观察数据",
  "observedDates": ["2026-10-23", "2026-10-26"],
  "runtime": { "openclaw": "2026.10.3", "node": "24.18.0" },
  "disclosure": "由项目实验记录摘录。已移除地址、凭据、用户、业务、会话与请求标识，不含对话正文。不是原始日志，也不是受控总体性能基准。",
  "hello": {
    "date": "2026-10-23",
    "kind": "真实语音事件日志",
    "start": "UI commit",
    "end": "首次 HTMLMediaElement playing",
    "totalMs": 7418,
    "excludes": ["UI commit 之前的 VAD 判停", "声卡与扬声器实际声学输出"],
    "segments": [
      { "label": "ASR 收尾", "ms": 579, "approximate": false },
      { "label": "ASR final → HTTP 发出", "ms": 3686, "approximate": true },
      { "label": "HTTP 发出 → 首个正文", "ms": 2463, "approximate": true },
      { "label": "首个正文 → playing", "ms": 690, "approximate": false }
    ],
    "agentRunToHttpMsApprox": 2338,
    "method": "HTTP 发出时间由原生传输响应日志减去 elapsedMs 推算，其相邻分段为近似值。"
  },
  "earlyWarmup": {
    "date": "2026-10-23",
    "kind": "同设备隔离文本探针，早期取消方案，后被完整回环方案替代",
    "dispatchToHttpMs": { "coldFirst": 5983, "preparedFirst": 1837 },
    "limitation": "单轮观察，不是全链路播放耗时。"
  },
  "fullWarmup": {
    "date": "2026-10-23",
    "kind": "独立配置与会话副本下的原生文本链路",
    "startupPreparationMs": 13489,
    "externalModelCallsDuringPreparation": 0,
    "temporarySessionsAfterCleanup": 0,
    "mainSessionUnchanged": true,
    "samples": [
      { "condition": "启动预热后第一句", "inputToHttpMs": 1380, "inputToFirstTextMs": 3693 },
      { "condition": "连续第二句", "inputToHttpMs": 1483, "inputToFirstTextMs": 3232 },
      { "condition": "空闲 120 秒后第一句", "inputToHttpMs": 691, "inputToFirstTextMs": 2496 }
    ],
    "limitation": "各一轮；不含 VAD、ASR、TTS、浏览器播放与扬声器。"
  },
  "sse": {
    "date": "2026-10-23",
    "kind": "相同模型、固定短文任务、同一后端的不同网络路径探针",
    "samples": [
      { "condition": "修改前公网", "firstEventMs": 3271, "firstTextMs": 3271, "endMs": 3272 },
      { "condition": "修改前直达后端", "firstEventMs": 528, "firstTextMs": 1692, "endMs": 3600 },
      { "condition": "修改后公网", "firstEventMs": 502, "firstTextMs": 2253, "endMs": 4123 }
    ],
    "change": ["Cache-Control: no-store, no-transform", "X-Accel-Buffering: no"],
    "limitation": "独立请求，模型耗时会波动；证据是分块集中到达变为连续到达，不是统计提速比例。未确认公网中间层具体产品。"
  },
  "tts": {
    "date": "2026-10-23",
    "start": "TTS 请求",
    "end": "首音频包",
    "beforeColdMs": 2172,
    "beforeReusedMs": 184,
    "afterObservedMs": [217, 205, 309, 185],
    "overlappedConnectionPreparationMs": 1207,
    "firstHeaderOnlyPacketBytes": 44,
    "limitation": "不等于首个可解码帧或实际起播，不构成受控分布比较。"
  },
  "downloadPressure": {
    "date": "2026-10-26",
    "healthTimeoutMs": 2000,
    "samples": [
      { "condition": "旧实现隔离压力", "durationSeconds": 61.42, "guardStopped": true, "healthTimeoutCount": 10 },
      { "condition": "修正版隔离压力", "durationSeconds": 279.01, "completedFiles": 34, "guardStopped": false, "healthTimeoutCount": 0, "maxHealthMs": 116.39 },
      { "condition": "真实业务下载", "durationSeconds": 383.17, "healthTimeoutCount": 1 }
    ],
    "limitation": "负载规模、时长和运行配置不同，不能计算统一提速倍数；健康接口不代表语音链路。"
  },
  "upstreamTail": {
    "date": "2026-10-26",
    "kind": "下载压力期间的文本探针",
    "clientFirstAudioPacketMs": 7546.51,
    "backendUpstreamHeadersMs": 5341,
    "backendAuthMs": 0,
    "backendDnsMs": 0,
    "backendConnectMs": 0,
    "backendTlsMs": 0,
    "ttsFirstPacketMs": 177,
    "correlation": "按时间、顺序、相同模型与输出长度关联，尚无统一端到端请求标识。",
    "limitation": "客户端与服务端计时起点不同，不直接相加。上游等待不能再细分为排队、推理或返回网络。"
  }
}