Speed test matrix
Ornith-1.5-9B on RTX 3090 24GB
vllm · 0.32.0 · BF166 contexts (0–168K) × 8 concurrency levels (1–128) · prefill at 8K, 16K, 32K, 64K, 128K
Hardware
- Type
- Discrete GPU
- GPU
- RTX 3090
- VRAM
- 24 GB
- CPU
- Intel Core i7-9700K (8C)
- RAM
- 32 GB
- OS
- Ubuntu 24.04.5
Engine
- Engine
- vllm
- Version
- 0.32.0
- Quantization
- BF16
- Backend
- cuda
- Repository
- github.com/vllm-project/vllm
- Build
- vllm/vllm-openai:v0.32.0-x86_64
Run
- Served model
- bench
- Revision
- main
- Benchmark tool
- llm-inference-bench v0.8.0
- Decode test
- Fixed duration
- Prefill mode
- Measured during decode warm-up
- Time per measurement
- 30 s
- Max output
- 8,192 tokens
Launch command
# Untuned out-of-the-box baseline. Spec decode: MTP, 2 tokens lookahead. KV cache: int4_per_token_head
# 1x RTX 3090 24GB (Zagitta/gpu-unlock), 420 W limit, PCIe Gen3 x16 | Intel Core i7-9700K 8C | 32 GB DDR4 | Ubuntu 24.04.5, NVIDIA driver 580.178.04
vllm serve ornith-ai/Ornith-1.5-9B --max-model-len 180224 --gpu-memory-utilization 0.94 --max-num-seqs 104 --enable-prefix-caching --trust-remote-code --language-model-only --speculative-config {"method":"mtp","num_speculative_tokens":2} --kv-cache-dtype int4_per_token_head --attention-backend TRITON_ATTNPrefill
prompt tok/s by context length8K context5,7171,433 ms TTFT
16K context4,7793,395 ms TTFT
32K context3,6648,814 ms TTFT
64K context2,52125,555 ms TTFT
128K context1,55782,673 ms TTFT
Sustained decode
total tok/s · rows are context length, columns are simultaneous requests| Context | 1 | 2 | 4 | 8 | 16 | 32 | 64 | 128 |
|---|---|---|---|---|---|---|---|---|
| 0 | 62.845 ms TTFT | 132.348 ms TTFT | 258.0101 ms TTFT | 473.2146 ms TTFT | 286.2Requests queued185 ms TTFT | Over capacity | Over capacity | Over capacity |
| 16K | 43.9977 ms TTFT | 81.51,745 ms TTFT | 176.62,616 ms TTFT | Over capacity | Over capacity | Over capacity | Over capacity | Over capacity |
| 32K | 34.81,339 ms TTFT | 71.82,361 ms TTFT | 131.93,918 ms TTFT | Over capacity | Over capacity | Over capacity | Over capacity | Over capacity |
| 64K | 22.41,725 ms TTFT | 47.03,069 ms TTFT | Over capacity | Over capacity | Over capacity | Over capacity | Over capacity | Over capacity |
| 128K | 14.63,438 ms TTFT | Over capacity | Over capacity | Over capacity | Over capacity | Over capacity | Over capacity | Over capacity |
| 168K | 11.25,461 ms TTFT | Over capacity | Over capacity | Over capacity | Over capacity | Over capacity | Over capacity | Over capacity |
Requests queued: the server could not run all requests at once, so some waited in a queue. Over capacity: not run because this many requests at this context would exceed the server's KV cache.
TTFT is measured after the benchmark warms the server's prompt cache, so it mostly excludes prefill.
All measurements
Latencies are medians. Total tok/s is output across all simultaneous requests.| Phase | Context | Requests at once | Status | Total tok/s | Per request tok/s | TTFT | Time between tokens | Average active requests | Completed requests | Output tokens | Measured for |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Prefill | 8K | 1 | Valid | 5,717.0 | — | 1,433 ms | — | — | 1 | — | — |
| Prefill | 16K | 1 | Valid | 4,779.0 | — | 3,395 ms | — | — | 1 | — | — |
| Prefill | 32K | 1 | Valid | 3,664.0 | — | 8,814 ms | — | — | 1 | — | — |
| Prefill | 64K | 1 | Valid | 2,521.0 | — | 25,555 ms | — | — | 1 | — | — |
| Prefill | 128K | 1 | Valid | 1,557.0 | — | 82,673 ms | — | — | 1 | — | — |
| Sustained decode | 0 | 1 | Valid | 62.8 | 65.7 | 45 ms | 15.2 ms | 1.0 | 0 | 1,883 | 30.0 s |
| Sustained decode | 0 | 2 | Valid | 132.3 | 67.8 | 48 ms | 14.8 ms | 2.0 | 0 | 3,966 | 30.0 s |
| Sustained decode | 0 | 4 | Valid | 258.0 | 65.9 | 101 ms | 15.2 ms | 4.0 | 0 | 7,737 | 30.0 s |
| Sustained decode | 0 | 8 | Valid | 473.2 | 61.1 | 146 ms | 16.4 ms | 8.0 | 0 | 14,195 | 30.0 s |
| Sustained decode | 0 | 16 | Requests queued | 286.2 | 47.2 | 185 ms | 21.2 ms | 8.8 | 0 | 8,568 | 29.9 s |
| Sustained decode | 0 | 32 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 0 | 64 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 0 | 128 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 16K | 1 | Valid | 43.9 | 45.1 | 977 ms | 22.1 ms | 1.0 | 0 | 1,316 | 30.0 s |
| Sustained decode | 16K | 2 | Valid | 81.5 | 40.7 | 1,745 ms | 24.9 ms | 2.0 | 0 | 2,443 | 30.0 s |
| Sustained decode | 16K | 4 | Valid | 176.6 | 43.3 | 2,616 ms | 23.1 ms | 4.0 | 0 | 5,293 | 30.0 s |
| Sustained decode | 16K | 8 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 16K | 16 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 16K | 32 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 16K | 64 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 16K | 128 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 32K | 1 | Valid | 34.8 | 35.7 | 1,339 ms | 28.0 ms | 1.0 | 0 | 1,043 | 30.0 s |
| Sustained decode | 32K | 2 | Valid | 71.8 | 36.1 | 2,361 ms | 27.7 ms | 2.0 | 0 | 2,152 | 30.0 s |
| Sustained decode | 32K | 4 | Valid | 131.9 | 33.0 | 3,918 ms | 30.3 ms | 4.0 | 0 | 3,956 | 30.0 s |
| Sustained decode | 32K | 8 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 32K | 16 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 32K | 32 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 32K | 64 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 32K | 128 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 64K | 1 | Valid | 22.4 | 23.1 | 1,725 ms | 43.4 ms | 1.0 | 0 | 671 | 30.0 s |
| Sustained decode | 64K | 2 | Valid | 47.0 | 23.6 | 3,069 ms | 42.4 ms | 2.0 | 0 | 1,408 | 29.9 s |
| Sustained decode | 64K | 4 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 64K | 8 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 64K | 16 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 64K | 32 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 64K | 64 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 64K | 128 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 128K | 1 | Valid | 14.6 | 14.8 | 3,438 ms | 67.8 ms | 1.0 | 0 | 437 | 30.0 s |
| Sustained decode | 128K | 2 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 128K | 4 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 128K | 8 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 128K | 16 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 128K | 32 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 128K | 64 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 128K | 128 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 168K | 1 | Valid | 11.2 | 11.3 | 5,461 ms | 88.8 ms | 1.0 | 0 | 337 | 30.0 s |
| Sustained decode | 168K | 2 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 168K | 4 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 168K | 8 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 168K | 16 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 168K | 32 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 168K | 64 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 168K | 128 | Over capacity | — | — | — | — | — | — | — | — |
Requests queued: the server could not run all requests at once, so some waited in a queue. Over capacity: not run because this many requests at this context would exceed the server's KV cache.