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- Use the Jetpack Microbenchmark library for benchmark testing to avoid the impact of CPU frequency reduction and JIT optimization on test results.
- The test case input includes three json files of size 12kb, 78kb, and 238kb to test the impact of json size on deserialization speed.
- The test results are divided into multiple runs with sufficient preheating and one run without preheating to test the difference in deserialization speed under cold start.
| small json | medium json | large json | |
|---|---|---|---|
| Kotlin Serialization | 165,936 ns | 997,228 ns | 2,933,098 ns |
| JSONReader | 190,902 ns | 1,164,605 ns | 3,412,914 ns |
| FastJson | 196,860 ns | 1,417,077 ns | 4,218,987 ns |
| JSONObject | 258,789 ns | 1,690,190 ns | 4,788,937 ns |
| Moshi | 303,056 ns | 1,411,364 ns | 3,955,789 ns |
| Gson | 412,421 ns | 1,356,564 ns | 3,557,943 ns |
| Jackson | 1,073,504 ns | 1,798,989 ns | 3,543,983 ns |
| small json | medium json | large json | |
|---|---|---|---|
| Kotlin Serialization | 4,114,323 ns | 15,739,688 ns | 17,428,906 ns |
| JSONReader | 630,469 ns | 2,052,501 ns | 5,630,261 ns |
| FastJson | 61,629,844 ns | 6,756,823 ns | 10,529,791 ns |
| JSONObject | 580,469 ns | 2,227,290 ns | 6,311,667 ns |
| Moshi | 4,460,886 ns | 13,854,792 ns | 18,951,198 ns |
| Gson | 3,319,688 ns | 5,568,906 ns | 10,264,635 ns |
| Jackson | 15,070,469 ns | 13,625,521 ns | 17,914,687 ns |
Kudos is short for Kotlin utilities for deserializing objects. It is designed to make it safer and easier to deserializing Kotlin classes with Gson and Jackson.
Based on the working mechanism of Kudos, it is not difficult to think that the running time of Kudos will be slightly longer than the corresponding JSON serialization framework. The following is a comparison of the running time of Kudos and the corresponding JSON serialization framework:
| small json | medium json | large json | |
|---|---|---|---|
| Gson | 412,375 ns | 1,374,838 ns | 3,641,904 ns |
| Kudos-Gson | 517,123 ns | 1,686,568 ns | 4,311,910 ns |
| Jackson | 1,035,010 ns | 1,750,709 ns | 3,450,974 ns |
| Kudos-Jackson | 1,261,026 ns | 2,030,874 ns | 3,939,600 ns |