| Input filename | Size (MB) | Content |
|---|---|---|
| data/output/persons_fp.json | 697.35 | Text,doubles |
| Environment | Windows, Intel |
|---|---|
| Computer | Lenovo Thinkpad X Extreme with 8 cores, 16 hardware threads, 32 GB memory, 2 TB solid state drive |
| Operating system | Windows 2011 |
| Compiler | Visual Studio 2022 |
| Language | C++ 2017 |
| Library | Version |
|---|---|
| jsoncons | 0.170.0 |
| nlohmann | 3.11.2 |
| cJSON | 1.7.15 |
| json11 | 2017-06-20-2 |
| rapidjson | 2020-02-08 |
| jsoncpp | 1.9.5 |
| json_spirit | 4.1.0-1 |
| taojson | 2020-09-14 |
| Library | Time to read (s) | Time to write (s) | Memory footprint of json value (MB) | Remarks |
|---|---|---|---|---|
| jsoncons | 17.857 | 10.33 | 1057 | Uses sorted std::vector of key/value pairs for objects, expect smaller memory footprint.Uses slightly modified grisu3_59_56 implementation by Florian Loitsch plus fallback for printing doubles, expect faster serializing. |
| nlohmann | 25.571 | 19.382 | 1234 | Uses std::map for objects. Uses slightly modified Grisu2 implementation by Florian Loitsch for printing doubles, expect faster serializing. |
| cJSON | 24.152 | 69.649 | 5813 | Inefficient storage (items do not share the same space), expect larger memory footprint. Uses sprintf and sscanf to support locale-independent round-trip. |
| json11 | 24.445 | 46.515 | 4905 | Uses pimpl idiom, implementation uses virtual inheritance, expect larger memory footprint. |
| rapidjson | 5.263 | 7.552 | 1099 | Uses custom floating point parsing, expect faster parsing. Uses girsu3 for printing doubles, expect faster serializing. Uses custom allocation and flat map for objects, expect smaller memory footprint. |
| jsoncpp | 134.955 | 80.718 | 6163 | Uses std::map for both arrays and objects, expect larger memory footprint. |
| json_spirit | 336.491 | 141.197 | 2732 | Uses Boost spirit parsing, expect slower parsing. |
| taojson | 63.515 | 13.888 | 2654 | Uses modified google/double conversion routines for parsing doubles. Uses modified jeaiii/itoa routines for outputting integers. Uses slightly modified Grisu2 implementation by Florian Loitsch for printing doubles, expect faster serializing. |