Rust VS Kotlin benchmarks

Current benchmark data was generated on Wed May 25 2022, full log can be found HERE

CONTRIBUTIONS are WELCOME!

[x86_64][2 cores] Intel(R) Xeon(R) Platinum 8272CL CPU @ 2.60GHz (Model 85)

* -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.)

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 5-m.rs 166ms 1.3ms 2.3MB 287ms 0ms rustc 1.61.0
rust 5c-m.rs 175ms 6.6ms 1.2MB 297ms 0ms rustc 1.63.0
rust 1c.rs 191ms 3.2ms 0.7MB 180ms 0ms rustc 1.63.0
rust 1.rs 234ms 0.2ms 0.6MB 223ms 0ms rustc 1.61.0

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1c.rs 24ms 1.7ms 0.6MB 13ms 0ms rustc 1.63.0
rust 5c-m.rs 26ms 1.8ms 1.3MB 27ms 0ms rustc 1.63.0
rust 5-m.rs 27ms 2.0ms 1.3MB 27ms 0ms rustc 1.61.0
rust 1.rs 27ms 1.1ms 1.9MB 20ms 0ms rustc 1.61.0

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 2.2ms 0.6ms 2.0MB 0ms 0ms rustc 1.63.0
rust 1.rs 2.4ms 0.5ms 0.6MB 0ms 0ms rustc 1.61.0
kotlin 1.kt 2.6ms 0.9ms 1.2MB 0ms 0ms kotlin/native 1.6.21
kotlin 1.kt 73ms 2.6ms 41.1MB 52ms 12ms kotlin/jvm 17.0.2

mandelbrot

Input: 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 9.rs 362ms 2.1ms 4.9MB 350ms 0ms rustc 1.63.0
rust 8.rs 455ms 0.4ms 4.9MB 443ms 0ms rustc 1.61.0

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 9.rs 18ms 0.4ms 0.6MB 10ms 0ms rustc 1.63.0
rust 8.rs 22ms 0.8ms 0.6MB 10ms 0ms rustc 1.61.0

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 4-i.rs 188ms 0.3ms 0.6MB 180ms 0ms rustc 1.61.0
rust 7-i.rs 276ms 22ms 0.6MB 263ms 0ms rustc 1.61.0
rust 3.rs 301ms 0.1ms 0.6MB 290ms 0ms rustc 1.63.0
rust 2.rs 337ms 0.4ms 0.6MB 330ms 0ms rustc 1.61.0
rust 1.rs 408ms 10ms 0.6MB 400ms 0ms rustc 1.61.0
kotlin 1.kt 633ms 16ms 43.1MB 647ms 10ms kotlin/jvm 17.0.2
kotlin 1n.kt 705ms 4.2ms 1.1MB 693ms 0ms kotlin/native 1.6.21

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 4-i.rs 23ms 0.4ms 0.6MB 10ms 0ms rustc 1.61.0
rust 7-i.rs 27ms 0.1ms 0.6MB 20ms 0ms rustc 1.61.0
rust 3.rs 32ms 1.3ms 0.6MB 20ms 0ms rustc 1.63.0
rust 2.rs 36ms 2.0ms 0.6MB 30ms 0ms rustc 1.61.0
rust 1.rs 41ms 2.7ms 2.1MB 30ms 0ms rustc 1.61.0
kotlin 1n.kt 73ms 1.5ms 1.1MB 67ms 0ms kotlin/native 1.6.21
kotlin 1.kt 149ms 1.4ms 43.2MB 160ms 17ms kotlin/jvm 17.0.2

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 8-m.rs 872ms 1.5ms 2.6MB 1613ms 3ms rustc 1.63.0
rust 7-m.rs 893ms 2.6ms 2.2MB 1717ms 0ms rustc 1.61.0
rust 8.rs 1518ms 1.1ms 2.5MB 1510ms 0ms rustc 1.63.0
rust 2-m.rs 1706ms 54ms 2.1MB 3290ms 7ms rustc 1.61.0
rust 7.rs 1722ms 3.0ms 2.2MB 1710ms 0ms rustc 1.61.0
rust 2.rs timeout 0.0ms 0.0MB 0ms 0ms rustc 1.61.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 8-m.rs 220ms 6.5ms 2.4MB 397ms 0ms rustc 1.63.0
rust 7-m.rs 233ms 1.5ms 0.7MB 423ms 0ms rustc 1.61.0
rust 7.rs 416ms 29ms 0.6MB 403ms 0ms rustc 1.61.0
rust 8.rs 432ms 0.5ms 2.2MB 420ms 0ms rustc 1.63.0
rust 2-m.rs 435ms 7.8ms 2.3MB 820ms 0ms rustc 1.61.0
rust 2.rs 1371ms 0.7ms 0.6MB 1360ms 0ms rustc 1.61.0

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 8-m.rs 60ms 1.7ms 2.3MB 100ms 0ms rustc 1.63.0
rust 7-m.rs 64ms 0.6ms 0.7MB 100ms 0ms rustc 1.61.0
rust 7.rs 103ms 7.6ms 0.6MB 93ms 0ms rustc 1.61.0
rust 8.rs 107ms 6.1ms 2.2MB 97ms 0ms rustc 1.63.0
rust 2-m.rs 115ms 3.3ms 0.7MB 200ms 0ms rustc 1.61.0
rust 2.rs 391ms 0.6ms 0.6MB 380ms 0ms rustc 1.61.0

binarytrees

Input: 18

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1.kt 712ms 0.5ms 307.9MB 740ms 87ms kotlin/jvm 17.0.2
rust 4.rs 1628ms 114ms 33.8MB 1600ms 10ms rustc 1.61.0
rust 5.rs 1902ms 27ms 33.9MB 1867ms 17ms rustc 1.61.0
rust 3.rs 1939ms 119ms 49.8MB 1910ms 13ms rustc 1.61.0
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 137ms 1.9ms 109.6MB 113ms 33ms kotlin/jvm 17.0.2
rust 4.rs 138ms 1.4ms 5.7MB 120ms 0ms rustc 1.61.0
rust 3.rs 166ms 0.5ms 7.7MB 153ms 0ms rustc 1.61.0
rust 5.rs 168ms 1.0ms 5.7MB 160ms 0ms rustc 1.61.0
kotlin 1.kt 380ms 1.3ms 62.1MB 350ms 13ms kotlin/native 1.6.21

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 3-m.rs 915ms 27ms 6.3MB 1760ms 17ms rustc 1.61.0
rust 5-m.rs 1033ms 130ms 5.7MB 1983ms 30ms rustc 1.61.0
rust 3.rs 1831ms 4.5ms 6.5MB 1777ms 37ms rustc 1.61.0
kotlin 2-m.kt 3070ms 596ms 182.5MB 5807ms 87ms kotlin/jvm 17.0.2
kotlin 1.kt 3092ms 4.3ms 170.9MB 3890ms 70ms kotlin/jvm 17.0.2
rust 4.rs 3182ms 1.1ms 4.5MB 3170ms 0ms rustc 1.61.0
rust 1-m.rs 3399ms 14ms 5.8MB 6590ms 83ms rustc 1.61.0
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
rust 3-m.rs 85ms 15ms 3.0MB 137ms 7ms rustc 1.61.0
rust 3.rs 113ms 0.3ms 3.1MB 100ms 0ms rustc 1.61.0
rust 5-m.rs 120ms 13ms 3.2MB 200ms 0ms rustc 1.61.0
rust 4.rs 208ms 0.2ms 2.7MB 200ms 0ms rustc 1.61.0
rust 1-m.rs 234ms 2.8ms 2.8MB 427ms 7ms rustc 1.61.0
kotlin 1-m.kt 706ms 27ms 93.2MB 1247ms 43ms kotlin/jvm 17.0.2
kotlin 2-m.kt 976ms 5.7ms 68.2MB 1703ms 33ms kotlin/native 1.6.21
kotlin 2-m.kt 1003ms 75ms 105.5MB 1820ms 40ms kotlin/jvm 17.0.2
kotlin 1.kt 1172ms 4.8ms 48.7MB 1147ms 10ms kotlin/native 1.6.21

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 129ms 10ms 3.6MB 117ms 0ms rustc 1.61.0
rust 2.rs 538ms 2.3ms 3.6MB 527ms 0ms rustc 1.61.0

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 38ms 0.8ms 2.9MB 30ms 0ms rustc 1.61.0
rust 2.rs 89ms 1.0ms 3.3MB 77ms 0ms rustc 1.61.0

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 3-im.rs 614ms 0.3ms 0.7MB 1183ms 0ms rustc 1.61.0
rust 2-im.rs 952ms 10.0ms 0.7MB 1840ms 0ms rustc 1.61.0
rust 5-m.rs 1115ms 2.2ms 0.7MB 2110ms 0ms rustc 1.61.0
rust 3-i.rs 1206ms 0.8ms 0.6MB 1200ms 0ms rustc 1.61.0
rust 2-i.rs 1674ms 0.6ms 0.6MB 1657ms 0ms rustc 1.61.0
rust 1-m.rs 2129ms 3.7ms 0.7MB 4100ms 3ms rustc 1.61.0
rust 1.rs 3896ms 25ms 0.6MB 3880ms 0ms rustc 1.61.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 3-im.rs 63ms 1.8ms 0.7MB 100ms 0ms rustc 1.61.0
rust 2-im.rs 90ms 1.7ms 2.0MB 150ms 0ms rustc 1.61.0
rust 5-m.rs 99ms 3.9ms 0.6MB 170ms 0ms rustc 1.61.0
rust 3-i.rs 103ms 1.3ms 0.6MB 90ms 0ms rustc 1.61.0
rust 2-i.rs 143ms 1.4ms 0.6MB 130ms 0ms rustc 1.61.0
rust 1-m.rs 192ms 0.8ms 0.7MB 337ms 0ms rustc 1.61.0
rust 1.rs 312ms 22ms 0.6MB 300ms 0ms rustc 1.61.0

http-server

Input: 3000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 216ms 54ms 47.0MB 120ms 130ms rustc 1.61.0
rust 2-m.rs 557ms 7.6ms 114.0MB 317ms 557ms rustc 1.61.0
rust 1-http2.rs 814ms 173ms 81.0MB 937ms 413ms rustc 1.61.0
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
rust 2-http2.rs timeout 0.0ms 0.0MB 0ms 0ms rustc 1.61.0

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 75ms 19ms 15.7MB 27ms 23ms rustc 1.61.0
rust 2.rs 135ms 13ms 29.9MB 33ms 103ms rustc 1.61.0
rust 2-http2.rs 292ms 30ms 28.7MB 400ms 87ms rustc 1.61.0
rust 1-http2.rs 365ms 5.4ms 28.5MB 520ms 103ms rustc 1.61.0
kotlin 2-m.kt 2250ms 240ms 237.8MB 3337ms 303ms kotlin/jvm 17.0.2
kotlin 1-m.kt 2284ms 167ms 236.0MB 3647ms 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
rust 3.rs 82ms 0.4ms 36.4MB 57ms 10ms rustc 1.61.0
rust 2.rs 88ms 4.3ms 38.1MB 60ms 13ms rustc 1.61.0
rust 1.rs 145ms 8.0ms 75.5MB 97ms 33ms rustc 1.61.0
kotlin 1-m.kt 1042ms 27ms 215.1MB 1737ms 83ms kotlin/jvm 17.0.2

Input: canada 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 3.rs 491ms 0.6ms 258.3MB 383ms 90ms rustc 1.61.0
rust 2.rs 492ms 1.3ms 258.4MB 370ms 103ms rustc 1.61.0
rust 1.rs 918ms 44ms 605.1MB 637ms 260ms rustc 1.61.0
kotlin 1.kt 4142ms 313ms 954.1MB 5743ms 387ms kotlin/jvm 17.0.2

knucleotide

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 8-m.rs 360ms 6.6ms 28.2MB 633ms 10ms rustc 1.61.0
rust 8.rs 637ms 8.6ms 23.9MB 610ms 13ms rustc 1.61.0

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 8-m.rs 50ms 3.4ms 16.1MB 63ms 7ms rustc 1.61.0
rust 8.rs 75ms 3.8ms 11.6MB 53ms 10ms rustc 1.61.0

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0-unsafe.rs 59ms 7.6ms 0.6MB 47ms 0ms rustc 1.61.0
rust 1.rs 77ms 12ms 2.1MB 70ms 0ms rustc 1.61.0
kotlin 2-m.kt 243ms 1.3ms 112.3MB 323ms 47ms kotlin/jvm 17.0.2
kotlin 1.kt 256ms 2.6ms 109.7MB 307ms 33ms kotlin/jvm 17.0.2
kotlin 2.kt 395ms 25ms 92.1MB 363ms 13ms 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
rust 0-unsafe.rs 204ms 28ms 0.6MB 193ms 0ms rustc 1.61.0
rust 1.rs 285ms 29ms 2.2MB 277ms 0ms rustc 1.61.0
kotlin 2.kt 417ms 7.8ms 127.4MB 510ms 47ms kotlin/jvm 17.0.2
kotlin 1.kt 484ms 10.0ms 138.4MB 517ms 53ms kotlin/jvm 17.0.2
kotlin 2.kt 1335ms 16ms 150.2MB 1290ms 30ms 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
rust 0-unsafe.rs 32ms 0.5ms 0.6MB 20ms 0ms rustc 1.61.0
rust 1.rs 40ms 0.9ms 0.7MB 30ms 0ms rustc 1.61.0
kotlin 1.kt 184ms 1.5ms 74.1MB 240ms 27ms kotlin/jvm 17.0.2
kotlin 2.kt 192ms 3.8ms 42.1MB 167ms 10ms kotlin/native 1.6.21
kotlin 2-m.kt 199ms 1.9ms 78.8MB 280ms 30ms 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 538ms 9.7ms 363.9MB 503ms 113ms kotlin/jvm 17.0.2
rust 1.rs 817ms 1.1ms 33.8MB 787ms 10ms rustc 1.61.0
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
rust 1.rs 167ms 1.9ms 9.9MB 153ms 0ms rustc 1.61.0
kotlin 1.kt 203ms 1.8ms 221.2MB 180ms 57ms kotlin/jvm 17.0.2
kotlin 1.kt 689ms 9.9ms 74.3MB 657ms 10ms kotlin/native 1.6.21

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 2.rs 460ms 2.0ms 6.6MB 440ms 0ms rustc 1.61.0
rust 1.rs 1182ms 8.4ms 40.9MB 1157ms 7ms rustc 1.61.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 2.rs 105ms 1.2ms 3.2MB 90ms 0ms rustc 1.61.0
rust 1.rs 127ms 0.8ms 11.7MB 110ms 0ms rustc 1.61.0

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 1740ms 1.0ms 2.9MB 1573ms 147ms rustc 1.61.0
rust 2.rs 1804ms 7.3ms 2.7MB 1733ms 60ms rustc 1.61.0
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
rust 1.rs 375ms 1.1ms 2.7MB 353ms 7ms rustc 1.61.0
rust 2.rs 408ms 1.2ms 2.5MB 400ms 0ms rustc 1.61.0
kotlin 1.kt 1560ms 32ms 249.6MB 1917ms 100ms 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

regex-redux

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 7.rs 534ms 33ms 77.5MB 703ms 20ms rustc 1.61.0

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 7.rs 58ms 0.7ms 11.8MB 63ms 0ms rustc 1.61.0

secp256k1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0.rs 126ms 8.2ms 0.7MB 117ms 0ms rustc 1.61.0
rust 1.rs 1769ms 116ms 0.7MB 1757ms 0ms rustc 1.61.0
kotlin 1.kt 4437ms 132ms 187.6MB 5327ms 63ms kotlin/jvm 17.0.2

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0.rs 36ms 0.6ms 0.7MB 27ms 0ms rustc 1.61.0
rust 1.rs 462ms 0.7ms 0.6MB 450ms 0ms rustc 1.61.0
kotlin 1-m.kt 1370ms 11ms 193.2MB 2130ms 77ms kotlin/jvm 17.0.2