FHIR TX Benchmark
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Round 0

2026-05-27

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

Mixed FHIR package codes

GET /CodeSystem/$lookup?system=<system>&code=<code>&version=<version>

Looks up codes from a diverse set of smaller terminologies bundled in FHIR R4 core and extension packages: DICOM, ActCode, MaritalStatus, v2 tables, NCI, and others. Each entry is a [system, code, version] triple.

Preflight request 
GET /CodeSystem/$lookup?system=http%3A%2F%2Fdicom.nema.org%2Fresources%2Fontology%2FDCM&code=121054&version=01
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 hades 7.0K
100%
11.7K 0% ✓
2 termbox 3.7K
52%
6.1K 0% ✓
3 fhirsmith 3.1K
44%
5.1K 0% ✓
4 snowstorm 1.1K
16%
1.8K 0% ✓
5 ontoserver 994
14%
1.7K 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 0.53ms0.62ms0.85ms1.5ms3.0ms4.9ms7.1ms16ms25ms
hades 0.19ms0.24ms0.46ms0.61ms1.7ms3.6ms3.6ms12ms24ms
fhirsmith 0.34ms0.42ms0.55ms1.7ms2.6ms4.6ms8.9ms13ms17ms
ontoserver 1.8ms2.2ms3.1ms5.6ms13ms22ms19ms73ms264ms
snowstorm 1.5ms2.3ms4.5ms4.9ms9.3ms15ms25ms40ms69ms