Programming Language and compiler
Benchmarks

Kotlin VS C++ benchmarks

Current benchmark data was generated on Fri May 20 2022, full log can be found HERE

CONTRIBUTIONS are WELCOME!

[x86_64][2 cores] Intel(R) Xeon(R) Platinum 8370C CPU @ 2.80GHz (Model 106)

* -m in a file name stands for multi-threading or multi-processing

* -i in a file name stands for direct intrinsics usage. (Usage of simd intrinsics via libraries is not counted)

* -ffi in a file name stands for non-stdlib FFI usage

* (You may find time < time(user) + time(sys) for some non-parallelized programs, the overhead is from GC or JIT compiler, which are allowed to take advantage of multi-cores as that's more close to real-world scenarios.)

binarytrees

Input: 18

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1.kt 733ms 92ms 842.9MB 710ms 130ms kotlin/jvm 17.0.2
kotlin 1.kt 3949ms 18ms 514.4MB 3847ms 87ms kotlin/native 1.6.21

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1.kt 133ms 2.6ms 109.5MB 117ms 20ms kotlin/jvm 17.0.2
kotlin 1.kt 304ms 2.8ms 62.2MB 283ms 3ms kotlin/native 1.6.21

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1.kt 2944ms 38ms 157.9MB 3853ms 60ms kotlin/jvm 17.0.2
kotlin 2-m.kt 3273ms 617ms 187.2MB 6243ms 67ms kotlin/jvm 17.0.2
kotlin 1.kt timeout 0.0ms 0.0MB 0ms 0ms kotlin/native 1.6.21
kotlin 2-m.kt timeout 0.0ms 0.0MB 0ms 0ms kotlin/native 1.6.21

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1-m.kt 689ms 63ms 100.4MB 1230ms 27ms kotlin/jvm 17.0.2
kotlin 2-m.kt 848ms 12ms 70.4MB 1487ms 23ms kotlin/native 1.6.21
kotlin 1.kt 1044ms 5.6ms 32.7MB 1030ms 7ms kotlin/native 1.6.21
kotlin 2-m.kt 1092ms 73ms 106.9MB 1977ms 57ms kotlin/jvm 17.0.2

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 1.cpp 2.0ms 0.6ms 0.9MB 0ms 0ms g++ 12.1.0
kotlin 1.kt 2.5ms 0.4ms 1.2MB 0ms 0ms kotlin/native 1.6.21
cpp 1.cpp 2.5ms 1.0ms 1.1MB 0ms 0ms clang++ 11.0.0
kotlin 1.kt 66ms 2.9ms 40.8MB 52ms 8ms kotlin/jvm 17.0.2

http-server

Input: 3000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1.kt timeout 0.0ms 0.0MB 0ms 0ms kotlin/jvm 17.0.2
kotlin 2.kt timeout 0.0ms 0.0MB 0ms 0ms kotlin/jvm 17.0.2

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 2-m.kt 2117ms 172ms 241.9MB 3383ms 230ms kotlin/jvm 17.0.2
kotlin 1-m.kt 2372ms 280ms 228.1MB 3690ms 287ms kotlin/jvm 17.0.2

json-serde

Input: sample 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1-m.kt 1068ms 28ms 216.8MB 1817ms 83ms kotlin/jvm 17.0.2

Input: canada 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1-m.kt 3906ms 112ms 949.9MB 5693ms 247ms kotlin/jvm 17.0.2

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 2-m.kt 223ms 5.9ms 113.8MB 330ms 30ms kotlin/jvm 17.0.2
kotlin 1.kt 234ms 3.0ms 109.7MB 300ms 20ms kotlin/jvm 17.0.2
kotlin 2.kt 363ms 3.4ms 88.5MB 337ms 10ms kotlin/native 1.6.21
kotlin 1.kt timeout 0.0ms 0.0MB 0ms 0ms kotlin/native 1.6.21

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 2.kt 367ms 3.8ms 130.7MB 470ms 27ms kotlin/jvm 17.0.2
kotlin 1.kt 455ms 2.2ms 132.6MB 517ms 27ms kotlin/jvm 17.0.2
kotlin 2.kt 1125ms 1.8ms 134.1MB 1087ms 23ms kotlin/native 1.6.21
kotlin 1.kt timeout 0.0ms 0.0MB 0ms 0ms kotlin/native 1.6.21

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1.kt 173ms 4.0ms 74.2MB 237ms 17ms kotlin/jvm 17.0.2
kotlin 2.kt 174ms 8.8ms 42.1MB 163ms 0ms kotlin/native 1.6.21
kotlin 2-m.kt 186ms 22ms 83.1MB 273ms 20ms kotlin/jvm 17.0.2
kotlin 1.kt timeout 0.0ms 0.0MB 0ms 0ms kotlin/native 1.6.21

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1.kt 461ms 8.2ms 362.9MB 450ms 80ms kotlin/jvm 17.0.2
kotlin 1.kt timeout 0.0ms 0.0MB 0ms 0ms kotlin/native 1.6.21

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1.kt 178ms 1.5ms 220.8MB 160ms 47ms kotlin/jvm 17.0.2
kotlin 1.kt 560ms 1.8ms 62.4MB 537ms 10ms kotlin/native 1.6.21

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 0-i.cpp 225ms 0.3ms 0.9MB 213ms 0ms g++ 12.1.0
cpp 0-i.cpp 258ms 0.6ms 1.1MB 247ms 0ms clang++ 11.0.0
cpp 1.cpp 339ms 0.4ms 0.9MB 330ms 0ms g++ 12.1.0
cpp 1.cpp 386ms 2.5ms 1.1MB 373ms 0ms clang++ 11.0.0
kotlin 1.kt 570ms 1.1ms 43.1MB 583ms 13ms kotlin/jvm 17.0.2
kotlin 1n.kt 583ms 1.1ms 1.1MB 570ms 0ms kotlin/native 1.6.21

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 0-i.cpp 26ms 0.4ms 1.0MB 17ms 0ms g++ 12.1.0
cpp 0-i.cpp 29ms 0.6ms 1.1MB 20ms 0ms clang++ 11.0.0
cpp 1.cpp 36ms 0.7ms 0.9MB 23ms 0ms g++ 12.1.0
cpp 1.cpp 41ms 0.2ms 1.1MB 30ms 0ms clang++ 11.0.0
kotlin 1n.kt 61ms 0.3ms 1.1MB 50ms 0ms kotlin/native 1.6.21
kotlin 1.kt 134ms 4.0ms 43.2MB 143ms 17ms kotlin/jvm 17.0.2

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1.kt timeout 0.0ms 0.0MB 0ms 0ms kotlin/jvm 17.0.2
kotlin 1n.kt timeout 0.0ms 0.0MB 0ms 0ms kotlin/native 1.6.21
kotlin 2n.kt timeout 0.0ms 0.0MB 0ms 0ms kotlin/native 1.6.21

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1.kt 1456ms 23ms 227.6MB 1820ms 50ms kotlin/jvm 17.0.2
kotlin 1n.kt timeout 0.0ms 0.0MB 0ms 0ms kotlin/native 1.6.21
kotlin 2n.kt timeout 0.0ms 0.0MB 0ms 0ms kotlin/native 1.6.21

secp256k1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1.kt 4527ms 12ms 182.2MB 5443ms 70ms kotlin/jvm 17.0.2

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1-m.kt 1369ms 13ms 182.1MB 2103ms 53ms kotlin/jvm 17.0.2