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Headline Methodology Results Cold vs warm By prompt Timeline Raw

5 MAY 2026 · VPS50 · cloud · 16 vCPU AMD EPYC · 62 GB RAM · no GPU · gemma/phi/qwen2.5/qwen3 · param-sweep

vps50-cpu-matrix-1 — gemma/phi/qwen2.5/qwen3 on vps50

TL;DR

4 request records across 5 cell(s); ~0.02 tok/s mean; p50 527.8s These results describe the recorded configuration. Speed does not establish answer correctness; check settings and sample sizes before comparing.

Methodology

Request counts were checked against the retained JSONL on 21 October 2026, excluding telemetry and skipped records. Timing aggregates remain those published in the source. Count audit and original summary counts.

See Public methodology and measurement limits for the full procedure. Recorded source revision (where available): —.

Results

Cell tok/s mean tok/s p50 tok/s p95 duration p50 calls
phi-4————0
gemma-4-26b-a4b————0
qwen3-30b-a3b————0
qwen2.5-72b————0
phi-4-q4km-cpu-ctx32k0.00.00.08m47s4

tokens per second — mean · p50 · p95

0 0 0 0 tok/s phi-4 gemma-4-26b-a4b qwen3-30b-a3b qwen2.5-72b mean: 0.02 tok/s p50: 0.02 tok/s p95: 0.02 tok/s phi-4-q4km-cpu-… mean p50 p95

Cold start vs warm

Cold and warm are the source harness labels for first and subsequent calls in a sequence. The published labels alone do not prove a fresh process, disk reload or cache reset.

Cellcold ncold tok/scold p50warm nwarm tok/swarm p50warm/cold
vps50:llamacpp:phi-4-q4km-cpu-ctx32k10.09m0s30.08m35s1.00×

By prompt difficulty

Tokens per second by prompt class. hello is a trivial one-line prompt; P-MEDIUM and P-HARDGeneration rates and durations by prompt class. These show the observed differences; they do not by themselves isolate prompt-processing versus generation bottlenecks.

Cellhello
vps50:llamacpp:phi-4-q4km-cpu-ctx32k0.0 tok/s
8m47s · n=4

Per-call timeline

Every call placed during this run, in order, colored by phase. Width is proportional to the call’s share of the cell’s wall-time. Hover any segment for the prompt id and tok/s.

vps50:llamacpp:phi-4-q4km… hello · cold · 540.0s · 0.0 tok/s hello · warm · 628.1s · 0.0 tok/s hello · warm · 512.1s · 0.0 tok/s hello · warm · 515.6s · 0.0 tok/s cold warm

Raw data

Every run gets its JSONL, log, summary, and metadata published. Clone the archive; re-run it; tell us where we got it wrong.

Cite

Margetic, S. et al. (2026). benchmarks.weeyuga.com/benchmarks/cef4b219.html
Public benchmarks of the Weeyuga cluster. Run id: cef4b219-6b65-4740-8c3b-5b68aa10cf3f. SHA —.

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