psych

YAML serializer · measured on 46 of 106 environments ·#1 in 0 of 6 measurements · primary environment: macOS 26 · arm64 · Ruby 3.2

Measured environments

macOS 26macOS 26macOS 26macOS 26macOS 26macOS 26macOS 26macOS 26macOS 26macOS 26macOS 26macOS 26macOS 26 IntelmacOS 26 IntelmacOS 26 IntelmacOS 26 IntelmacOS 26 IntelmacOS 26 IntelmacOS 26 IntelmacOS 26 IntelmacOS 26 IntelmacOS 26 IntelmacOS 15macOS 15macOS 15macOS 15macOS 15macOS 15macOS 15macOS 15macOS 15macOS 15macOS 15 IntelmacOS 15 IntelmacOS 15 IntelmacOS 15 IntelmacOS 15 IntelmacOS 15 IntelmacOS 15 IntelmacOS 15 IntelmacOS 14macOS 14macOS 14macOS 14macOS 14macOS 14macOS 14macOS 14Windows 2025Windows 2025Windows 2025Windows 2025Windows 2025Windows 2025Windows 2025Windows 2025Windows 2025Windows 11Windows 11Windows 2022Windows 2022Windows 2022Windows 2022Windows 2022Windows 2022Windows 2022Windows 2022Windows 2022Ubuntu 24.04Ubuntu 24.04Ubuntu 24.04Ubuntu 24.04Ubuntu 24.04Ubuntu 24.04Ubuntu 24.04Ubuntu 24.04Ubuntu 24.04Ubuntu 24.04Ubuntu 24.04Ubuntu 24.04Ubuntu 24.04Ubuntu 24.04Ubuntu 24.04Ubuntu 24.04Ubuntu 24.04Ubuntu 24.04Ubuntu 24.04Ubuntu 24.04Ubuntu 24.04Ubuntu 24.04Ubuntu 24.04Ubuntu 24.04Ubuntu 22.04Ubuntu 22.04Ubuntu 22.04Ubuntu 22.04Ubuntu 22.04Ubuntu 22.04Ubuntu 22.04Ubuntu 22.04Ubuntu 22.04Ubuntu 22.04Ubuntu 22.04Ubuntu 22.04Ubuntu 22.04Ubuntu 22.04

Iterations per second on the primary environment · rank vs the field

Operation	Input	ips	ms/op	Rank	vs best
Parse	small	15k	0.1	2/6	7.8× slower than yeptris-yaml
Parse	medium	31.7	31.5	2/6	6.6× slower than yeptris-yaml
Parse	large	2.54	393.16	2/6	4.8× slower than yeptris-yaml
Generate	small	10k	0.1	2/6	3.6× slower than yeptris-yaml
Generate	medium	13.0	76.8	2/6	2.5× slower than yeptris-yaml
Generate	large	1.07	936.35	2/6	2.2× slower than yeptris-yaml

Compare every library on every environment on the dashboard.

Cite

psych measured on macOS 26 · arm64 · Ruby 3.2, YAMLworkloads — serialbench, 2026-10-23. Full data: data/macos-26-ruby-3.2.yaml.