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+---
+id: 2026-03-19-llm-inference-benchmark
+title: "LLM Inference Speed Benchmark: vLLM vs TGI vs Triton"
+slug: llm-inference-benchmark
+status: topic
+content_type: article
+channels:
+  - wechat
+  - x
+language: en
+source_urls: []
+assets:
+  - 05-assets/llm-inference-benchmark/llm-inference-benchmark_fig.png
+  - 05-assets/llm-inference-benchmark/llm-inference-benchmark_fig.pdf
+cover_image: ""
+template: article
+owner: content-forge
+created_at: 2026-03-19T00:00:00+08:00
+updated_at: 2026-03-19T00:00:00+08:00
+---
+
+# LLM Inference Speed Benchmark: vLLM vs TGI vs Triton
+
+## Background
+
+We benchmarked three popular LLM inference engines on Llama-3-70B with A100 80GB GPUs.
+
+## Experimental Setup
+
+- Model: Llama-3-70B (FP16)
+- Hardware: 4x NVIDIA A100 80GB, NVLink
+- Input length: 512 tokens
+- Output length: 256 tokens
+- Batch sizes: 1, 4, 8, 16, 32, 64
+- Metric: tokens/second (throughput), ms/token (latency)
+
+## Results
+
+### Throughput (tokens/sec)
+
+| Batch Size | vLLM  | TGI   | Triton |
+|------------|-------|-------|--------|
+| 1          | 42    | 38    | 35     |
+| 4          | 156   | 142   | 128    |
+| 8          | 298   | 265   | 241    |
+| 16         | 512   | 478   | 420    |
+| 32         | 890   | 810   | 695    |
+| 64         | 1240  | 1100  | 920    |
+
+### Latency p99 (ms/token)
+
+| Batch Size | vLLM | TGI  | Triton |
+|------------|------|------|--------|
+| 1          | 24   | 26   | 29     |
+| 4          | 26   | 29   | 31     |
+| 8          | 27   | 30   | 33     |
+| 16         | 31   | 33   | 38     |
+| 32         | 36   | 39   | 46     |
+| 64         | 52   | 58   | 70     |
+
+## Architecture
+
+The benchmark pipeline follows this flow:
+
+Client → Load Balancer → Inference Engine (vLLM/TGI/Triton) → GPU Cluster → Response
+
+Each engine uses different batching strategies:
+- vLLM: Continuous batching with PagedAttention
+- TGI: Dynamic batching with FlashAttention-2
+- Triton: Static batching with TensorRT-LLM backend
+
+## Key Findings
+
+1. vLLM achieves 13-35% higher throughput than Triton across all batch sizes
+2. The gap narrows at larger batch sizes (35% at bs=1 vs 13% at bs=64)
+3. vLLM p99 latency is consistently 7-26% lower than Triton
+4. TGI sits between vLLM and Triton on both metrics
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