FHIR TX Benchmark
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Round 0

2026-04-08

Apple M3, 8-core · 24 GB · macOS Tahoe 26.3 · Docker Desktop 4.64.0 (8 CPU / 20 GB)

SNOMED hierarchy expand with count and offset

GET /ValueSet/$expand?url=http://snomed.info/sct?fhir_vs=isa/<concept>&count=<n>&offset=<k>

Expands a SNOMED is-a hierarchy slice with pagination. Pool covers 100 SNOMED hierarchies across three tiers — 60 large (≥5,000 descendants), 20 mid (500–4,999), 20 small (20–499) — with count/offset combinations sized to each tier.

Preflight request 
GET /ValueSet/$expand?url=http%3A%2F%2Fsnomed.info%2Fsct%3Ffhir_vs%3Disa%2F404684003&count=10&offset=0
Accept: application/fhir+json
Ranking
Servers ranked by weighted RPS (wRPS) for this test. wRPS = raw RPS × per-test normalizer × bias factor. Score % is relative to the top performer. Raw RPS is the measured peak throughput; imputed values (shown in italics in orange) are estimated for servers that did not run this test. Status: ✓ preflight passed, ✗ failed, ~ skipped.
# Server wRPS Score RPS Errors Status
1 termbox 6.2K
100%
183 0% ✓
2 ontoserver 6.1K
98%
180 0% ✓
3 snowstorm 465
7%
14 59.9% ✓
4 fhirsmith 376
6%
11 0% ✓
5 hades 26
0%
1 0% ✓
Latency
Latency percentiles per server across all VU levels. Columns: percentile / VU count.
p50/1 p95/1 p99/1 p50/10 p95/10 p99/10 p50/50 p95/50 p99/50
termbox 20ms49ms98ms53ms83ms92ms276ms327ms349ms
fhirsmith 65ms279ms485ms835ms1.47s1.77s2.72s25.27s33.75s
ontoserver 21ms48ms67ms44ms135ms186ms355ms825ms1.05s
snowstorm 1.0ms548ms1.01s7.8ms1.26s2.02s14ms4.65s6.12s
hades 22.21s40.76s42.41s11.26s32.67s44.52s34.37s55.01s56.30s