Seedance 自动临时素材任务耗时测试
本文整理 auto_create_assets=true（临时素材审核路径）与 false（直接传 HTTP URL）的耗时对比测试细节。
目的
对比同一模型、同一批 reference_image URL 下，开启与关闭 auto_create_assets 的端到端耗时差异，评估临时素材引入的额外开销。
方法
| 项 | 取值 |
|---|---|
| 接口 | POST/GET /v3/contents/generations/tasks |
| 模型 |
|
| 参数 |
|
| 素材数 | 每轮从池中随机抽 1 / 5 / 9 张（ 允许重复） |
| 对照 | 同一 |
| 重复 | 每组 3 次，共 3×3×2×3=54 次 |
| 执行 | 串行：提交 → 轮询终态 → 查库 → 下一任务 |
| 提示词 | 根据参考图生成一段平静的风景镜头，缓慢推镜，5秒 |
时间指标
| 指标 | 来源 | 含义 |
|---|---|---|
| 端到端时间 | 任务完成时刻 - 任务创建时刻 | 总耗时 |
素材规格
CreateAsset 约束：Height 须在 300px～6000px。素材池 5 张；抽 9 张时允许 URL 重复。每轮记录 Σ Content-Length（重复按次数累加）。
| 图片 | 分辨率 | Content-Type | 体积 | 是否入池 |
|---|---|---|---|---|
pexels-photo-19786669.jpeg | 2768×6000 | image/jpeg | 4.109 MB | 是 |
pexels-photo-20223485.jpeg | 3024×3780 | image/jpeg | 2.161 MB | 是 |
pexels-photo-31223020.jpeg | 4000×6000 | image/jpeg | 8.44 MB | 是 |
pexels-photo-35881031.jpeg | 2304×4096 | image/jpeg | 0.631 MB | 是 |
pexels-photo-36873727.jpeg | 2252×4000 | image/jpeg | 1.282 MB | 是 |
结果总览
- 计划 54 次；成功 54；失败 0。
端到端时间均值（秒）
开启 / 关闭分别对应 auto_create_assets=true / false。体积单位为 MB；括号内为 min/max；每组 n=3。
| 模型 | 张数 | ΣMB 均值 | 开启均值 | 关闭均值 | Δ |
|---|---|---|---|---|---|
doubao-seedance-2-0-260128 | 1 | 3.135 (2.161/4.109) | 260.0 (174/320) | 246.3 (193/312) | +13.7 |
doubao-seedance-2-0-260128 | 5 | 19.884 (15.770/22.049) | 295.0 (242/360) | 289.3 (234/337) | +5.7 |
doubao-seedance-2-0-260128 | 9 | 39.483 (35.224/44.103) | 304.7 (262/385) | 293.0 (279/311) | +11.7 |
doubao-seedance-2-0-fast-260128 | 1 | 1.396 (0.631/2.161) | 185.7 (178/191) | 164.7 (136/206) | +21.0 |
doubao-seedance-2-0-fast-260128 | 5 | 18.508 (15.119/22.251) | 239.7 (225/268) | 176.7 (173/183) | +63.0 |
doubao-seedance-2-0-fast-260128 | 9 | 24.081 (22.656/26.310) | 242.3 (221/261) | 202.7 (180/233) | +39.7 |
doubao-seedance-2-0-mini-260615 | 1 | 3.451 (0.631/8.440) | 160.3 (133/186) | 141.7 (94/191) | +18.7 |
doubao-seedance-2-0-mini-260615 | 5 | 13.588 (9.466/16.623) | 159.0 (139/181) | 142.0 (132/159) | +17.0 |
doubao-seedance-2-0-mini-260615 | 9 | 27.332 (19.148/43.250) | 223.0 (185/248) | 157.3 (141/177) | +65.7 |
原始明细（成功样本）
| 模型名 | 是否自动临时素材 | 素材个数 | 素材体积 | 任务耗时 |
|---|---|---|---|---|
doubao-seedance-2-0-260128 | 否 | 1 | 4.109 MB | 193s |
doubao-seedance-2-0-260128 | 否 | 1 | 4.109 MB | 234s |
doubao-seedance-2-0-260128 | 否 | 1 | 2.161 MB | 312s |
doubao-seedance-2-0-260128 | 是 | 1 | 4.109 MB | 174s |
doubao-seedance-2-0-260128 | 是 | 1 | 4.109 MB | 320s |
doubao-seedance-2-0-260128 | 是 | 1 | 2.161 MB | 286s |
doubao-seedance-2-0-260128 | 否 | 5 | 15.77 MB | 337s |
doubao-seedance-2-0-260128 | 否 | 5 | 21.832 MB | 234s |
doubao-seedance-2-0-260128 | 否 | 5 | 22.049 MB | 297s |
doubao-seedance-2-0-260128 | 是 | 5 | 15.77 MB | 283s |
doubao-seedance-2-0-260128 | 是 | 5 | 21.832 MB | 242s |
doubao-seedance-2-0-260128 | 是 | 5 | 22.049 MB | 360s |
doubao-seedance-2-0-260128 | 否 | 9 | 35.224 MB | 289s |
doubao-seedance-2-0-260128 | 否 | 9 | 39.121 MB | 311s |
doubao-seedance-2-0-260128 | 否 | 9 | 44.103 MB | 279s |
doubao-seedance-2-0-260128 | 是 | 9 | 35.224 MB | 262s |
doubao-seedance-2-0-260128 | 是 | 9 | 39.121 MB | 385s |
doubao-seedance-2-0-260128 | 是 | 9 | 44.103 MB | 267s |
doubao-seedance-2-0-fast-260128 | 否 | 1 | 2.161 MB | 136s |
doubao-seedance-2-0-fast-260128 | 否 | 1 | 0.631 MB | 152s |
doubao-seedance-2-0-fast-260128 | 否 | 1 | 2.161 MB | 206s |
doubao-seedance-2-0-fast-260128 | 是 | 1 | 2.161 MB | 178s |
doubao-seedance-2-0-fast-260128 | 是 | 1 | 0.631 MB | 188s |
doubao-seedance-2-0-fast-260128 | 是 | 1 | 2.161 MB | 191s |
doubao-seedance-2-0-fast-260128 | 否 | 5 | 15.119 MB | 173s |
doubao-seedance-2-0-fast-260128 | 否 | 5 | 18.153 MB | 174s |
doubao-seedance-2-0-fast-260128 | 否 | 5 | 22.251 MB | 183s |
doubao-seedance-2-0-fast-260128 | 是 | 5 | 15.119 MB | 225s |
doubao-seedance-2-0-fast-260128 | 是 | 5 | 18.153 MB | 226s |
doubao-seedance-2-0-fast-260128 | 是 | 5 | 22.251 MB | 268s |
doubao-seedance-2-0-fast-260128 | 否 | 9 | 26.31 MB | 233s |
doubao-seedance-2-0-fast-260128 | 否 | 9 | 23.277 MB | 195s |
doubao-seedance-2-0-fast-260128 | 否 | 9 | 22.656 MB | 180s |
doubao-seedance-2-0-fast-260128 | 是 | 9 | 26.31 MB | 261s |
doubao-seedance-2-0-fast-260128 | 是 | 9 | 23.277 MB | 221s |
doubao-seedance-2-0-fast-260128 | 是 | 9 | 22.656 MB | 245s |
doubao-seedance-2-0-mini-260615 | 否 | 1 | 1.282 MB | 94s |
doubao-seedance-2-0-mini-260615 | 否 | 1 | 8.44 MB | 191s |
doubao-seedance-2-0-mini-260615 | 否 | 1 | 0.631 MB | 140s |
doubao-seedance-2-0-mini-260615 | 是 | 1 | 1.282 MB | 162s |
doubao-seedance-2-0-mini-260615 | 是 | 1 | 8.44 MB | 186s |
doubao-seedance-2-0-mini-260615 | 是 | 1 | 0.631 MB | 133s |
doubao-seedance-2-0-mini-260615 | 否 | 5 | 14.675 MB | 159s |
doubao-seedance-2-0-mini-260615 | 否 | 5 | 9.466 MB | 132s |
doubao-seedance-2-0-mini-260615 | 否 | 5 | 16.623 MB | 135s |
doubao-seedance-2-0-mini-260615 | 是 | 5 | 14.675 MB | 181s |
doubao-seedance-2-0-mini-260615 | 是 | 5 | 9.466 MB | 157s |
doubao-seedance-2-0-mini-260615 | 是 | 5 | 16.623 MB | 139s |
doubao-seedance-2-0-mini-260615 | 否 | 9 | 43.25 MB | 154s |
doubao-seedance-2-0-mini-260615 | 否 | 9 | 19.148 MB | 177s |
doubao-seedance-2-0-mini-260615 | 否 | 9 | 19.597 MB | 141s |
doubao-seedance-2-0-mini-260615 | 是 | 9 | 43.25 MB | 185s |
doubao-seedance-2-0-mini-260615 | 是 | 9 | 19.148 MB | 236s |
doubao-seedance-2-0-mini-260615 | 是 | 9 | 19.597 MB | 248s |
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