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JSON Parsing Benchmarks: simdjson vs Standard JSON.parse

Gigabytes-per-second JSON parsing benchmarks comparing hardware-accelerated simdjson against standard native parsing libraries.

Test Environment

CPUApple M2 Max
RAM64GB
OSmacOS Sonoma
Toolsimdjson benchmark suite

Metrics Comparison

Parse Throughput

Unit: GB/s
simdjson (C++)
3.2
RapidJSON
0.9
V8 JSON.parse
0.5

Detailed Analysis

simdjson parses JSON faster than SSDs can read it, using SIMD instructions to process multiple characters per clock cycle.

By vectorizing structural index generation and string parsing, simdjson avoids branch mispredictions.

Structural Discovery

Finding brackets and quotes

Bottleneck: Traditional parsers read character-by-character.

Architectural Recommendations

  • Integrate simdjson bindings for extreme data processing pipelines

Frequently Asked Questions

Can I use simdjson in Node.js?

Yes, via N-API bindings.