vllm-benchmarking SKILL.md skillA

vllm-benchmarking from air-gapped/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add air-gapped/skills/vllm-benchmarking@git:20261018.4bad7f5

Pins git:20261018.4bad7f5 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
air-gapped/skills
Path
.claude/skills/vllm-benchmarking/SKILL.md
Versions recorded
11
Latest version
git:20261018.4bad7f5, committed Oct 18, 2026
First version recorded
May 29, 2026
Size
12,169 bytes
Repository stars
6
License
MIT

Run production vLLM benchmarks — `vllm bench` (serve, throughput, latency, sweep, startup, mm-processor), request-rate vs max-concurrency semantics, TTFT/TPOT/ITL/E2EL percentiles, goodput SLO measurement, prefix-cache workloads, air-gapped operation (HF_ENDPOINT, ModelScope, hf-mirror, offline cache). Methodology split — SLO health checks vs A/B change sweeps — plus pitfalls that produce misleading numbers (no warmup, wrong tokenizer, random-as-prod, `--request-rate inf` alone).

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# vLLM benchmarking

Target audience: operators producing defensible latency/throughput numbers against production or pre-production vLLM deployments, on datacenter GPUs, often in containerized or air-gapped environments.

**This skill measures; it does not tune.** Once a number is trusted and the
verdict is "too slow", the knobs live elsewhere in the `vllm` plugin:
**`vllm-performance-tuning`** (scheduler, MoE kernels, CUDA graphs, parallelism),
**`vllm-caching`** (KV tiering when the bottleneck is prefill or cache capacity),
**`vllm-nvidia-hardware`** (the SKU's own ceiling). Measure → change one thing →
re-measure with the same methodology; a tuning change compared against a
differently-shaped benchmark run is not evidence.

## What a bad benchmark costs

A wrong number is acted on with the same confidence as a right one. Three failure
modes, by what they cause — the flags that produce each are in **Critical
pitfalls** below:

1. **Wrong methodology** → GPUs bought to fix a latency problem, or a latency
   regression shipped because total throughput looked fine.
2. **Wrong workload** → caching wins that do not survive contact with production.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add air-gapped/skills/vllm-benchmarking@sha256:7ef72166b5919c0a

The line at the top of this page pins the label git:20261018.4bad7f5, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_bfh7rkqxdi66cm2l.svg)](https://markdownregistry.com/a/art_bfh7rkqxdi66cm2l)

3 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 11 versions of this file, between May 29, 2026 and Oct 18, 2026, about one every 14 days.

versioncommittedcommitsizeaudit
git:20261018.4bad7f5 latest2026-10-18 4bad7f5 12,169 BA view · diff
git:20261018.11ca19f2026-10-18 11ca19f 11,954 BA view · diff
git:20261018.1804f782026-10-18 1804f78 11,649 BA view · diff
git:20261018.c340e692026-10-18 c340e69 11,430 BA view · diff
git:20261018.58382c12026-10-18 58382c1 11,360 BA view · diff
git:20260923.466430c2026-09-23 466430c 12,108 BA view · diff
git:20260915.d1977c42026-09-15 d1977c4 11,384 BA view · diff
git:20260811.02eea3a2026-08-11 02eea3a 11,721 BA view · diff
git:20260725.aef8f182026-07-25 aef8f18 11,386 BA view · diff
git:20260721.618717e2026-07-21 618717e 10,867 BA view · diff
git:20260529.f15a2a52026-05-29 f15a2a5 10,811 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (12169 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

air-gapped/skills · 6 stars · license MIT · pushed 2026-11-04 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_bfh7rkqxdi66cm2l
GET https://markdownregistry.com/api/v1/resolve?ref=air-gapped/skills/vllm-benchmarking
GET https://markdownregistry.com/api/v1/blob/7ef72166b5919c0aa689ba0f7a0f16c17b89c4cf9da2154623dd41e16a2db1de

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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