record max batched tokens 32768 experiment

2026-07-15 10:27:33 +08:00
parent 59e497fdc9
commit 2c7a8d12b3
2 changed files with 163 additions and 0 deletions
--- a/worklogs/decode_analysis_report_2026-07-14.md
+++ b/worklogs/decode_analysis_report_2026-07-14.md
@@ -1107,3 +1107,42 @@ _PROF_TRACE = os.environ.get("PROF_TRACE", "0") == "1"
 - profiling 仍可通过 `PROF_TRACE=1` 手动开启。

 下一步继续看 MoE routed expert 和 TP all-reduce；服务日志中 decode 稳态仍约 5.8 tok/s，说明专家计算/通信路径仍是核心。
+
+## 2026-07-15：max_num_batched_tokens=32768 实验
+
+### 配置
+
+在 no-prof 代码基础上，仅把：
+
+```text
+--max-num-batched-tokens 16384
+```
+
+改为：
+
+```text
+--max-num-batched-tokens 32768
+```
+
+其余保持 100K 快速基线一致。此前 32768 发生过 OOM，但这次在清理残留 worker 和显存后可正常启动，说明之前 OOM 不能作为参数不可行的证据。
+
+### 结果
+
+本地归档：
+
+- `worklogs/remote_results/2026-07-15-official-like-baseline/eager_100k_b32768_c1_r8_t256_cap40k.json`
+
+| 指标 | 100K 基线 | no-prof 16384 | no-prof 32768 | 目标 |
+| --- | ---: | ---: | ---: | ---: |
+| Success Rate | 100.00% | 100.00% | 100.00% | >= 99% |
+| Cache Hit Rate | 74.17% | 74.17% | 74.17% | >= 50% |
+| TTFT P90 | 9.803s | 12.739s | 13.005s | <= 5s |
+| Output TPS P10 | 5.825 | 5.851 | 5.895 | >= 20 |
+| Aggregate Output TPS | 5.789 | 5.674 | 5.556 | - |
+| Uncached Input TPS | 178.330 | 169.148 | 173.430 | - |
+| Cache TPS | 512.015 | 485.652 | 497.947 | - |
+| Weighted Throughput | 883.109 | 840.712 | 857.595 | >= 8000 |
+
+### 结论
+
+32768 可以启动，但没有带来总体收益；Output TPS P10 略升，TTFT 继续变差，综合吞吐仍低于原 100K 基线。单纯扩大 chunk 不是主优化方向。下一步尝试 8192，验证更小 chunk 是否能改善 TTFT。
--- a/worklogs/remote_results/2026-07-15-official-like-baseline/eager_100k_b32768_c1_r8_t256_cap40k.json
+++ b/worklogs/remote_results/2026-07-15-official-like-baseline/eager_100k_b32768_c1_r8_t256_cap40k.json
@@ -0,0 +1,124 @@
+{
+  "created_at": "2026-07-14T20:56:29",
+  "url": "http://127.0.0.1:1111",
+  "model": "llm",
+  "dataset": "/root/work/logs/synthetic_cumulative_8_s3_cap40k.jsonl",
+  "concurrency": 1,
+  "max_requests": 8,
+  "max_tokens": 256,
+  "wall_sec": 335.87523818574846,
+  "success_rate": 1.0,
+  "ttft_p90_sec": 13.004944081977008,
+  "output_tps_p10_per_request": 5.8948614972894635,
+  "aggregate_output_tps": 5.555634318502662,
+  "aggregate_input_tps_uncached": 173.43046874978486,
+  "aggregate_cache_tps": 497.94679983972844,
+  "cache_hit_rate": 0.7416795639891973,
+  "weighted_token_throughput": 857.5945239544665,
+  "totals": {
+    "requests": 8,
+    "success": 8,
+    "prompt_tokens": 225499,
+    "input_tokens_uncached": 58251,
+    "cached_tokens": 167248,
+    "completion_tokens": 1866,
+    "reasoning_tokens": 1731
+  },
+  "targets": {
+    "output_tps_p10_per_request_gte_20": false,
+    "ttft_p90_lte_5": false,
+    "cache_hit_rate_gte_50pct": true,
+    "success_rate_gte_99pct": true,
+    "weighted_token_throughput_gte_8000": false
+  },
+  "results": [
+    {
+      "ok": true,
+      "elapsed_sec": 27.413454679772258,
+      "ttft_sec": 7.43462404422462,
+      "prompt_tokens": 7498,
+      "cached_tokens": 0,
+      "completion_tokens": 168,
+      "reasoning_tokens": 82,
+      "output_tps": 8.40890055402359,
+      "error": null
+    },
+    {
+      "ok": true,
+      "elapsed_sec": 49.30410090461373,
+      "ttft_sec": 22.904547728598118,
+      "prompt_tokens": 34177,
+      "cached_tokens": 7488,
+      "completion_tokens": 162,
+      "reasoning_tokens": 113,
+      "output_tps": 6.136467497002161,
+      "error": null
+    },
+    {
+      "ok": true,
+      "elapsed_sec": 45.20640793628991,
+      "ttft_sec": 2.946982776746154,
+      "prompt_tokens": 35384,
+      "cached_tokens": 34160,
+      "completion_tokens": 256,
+      "reasoning_tokens": 256,
+      "output_tps": 6.05782021486361,
+      "error": null
+    },
+    {
+      "ok": true,
+      "elapsed_sec": 38.86536529287696,
+      "ttft_sec": 8.762256804853678,
+      "prompt_tokens": 19274,
+      "cached_tokens": 7472,
+      "completion_tokens": 256,
+      "reasoning_tokens": 256,
+      "output_tps": 8.504105152524406,
+      "error": null
+    },
+    {
+      "ok": true,
+      "elapsed_sec": 46.21588536910713,
+      "ttft_sec": 3.327174164354801,
+      "prompt_tokens": 37099,
+      "cached_tokens": 35376,
+      "completion_tokens": 256,
+      "reasoning_tokens": 256,
+      "output_tps": 5.968936645772505,
+      "error": null
+    },
+    {
+      "ok": true,
+      "elapsed_sec": 35.56211626343429,
+      "ttft_sec": 5.644598634913564,
+      "prompt_tokens": 14661,
+      "cached_tokens": 7472,
+      "completion_tokens": 256,
+      "reasoning_tokens": 256,
+      "output_tps": 8.556859669264544,
+      "error": null
+    },
+    {
+      "ok": true,
+      "elapsed_sec": 46.31439816579223,
+      "ttft_sec": 3.116101799532771,
+      "prompt_tokens": 38199,
+      "cached_tokens": 37088,
+      "completion_tokens": 256,
+      "reasoning_tokens": 256,
+      "output_tps": 5.926159629756877,
+      "error": null
+    },
+    {
+      "ok": true,
+      "elapsed_sec": 46.98421955294907,
+      "ttft_sec": 3.0118106845766306,
+      "prompt_tokens": 39207,
+      "cached_tokens": 38192,
+      "completion_tokens": 256,
+      "reasoning_tokens": 256,
+      "output_tps": 5.821832521532164,
+      "error": null
+    }
+  ]
+}