Programming Language and compiler
Benchmarks

Results for 38 of 40 languages from this run on actest1.

Unavailable in this run: Hack, Lisp. Follow the run link for failure details.

All Kotlin benchmarks

Current benchmark data was generated on Sun Sep 27 2026, full log can be found HERE

CONTRIBUTIONS are WELCOME!

[x86_64][4 cores] Intel(R) Core(TM) i7-3687U CPU @ 2.10GHz (Model 58)

* -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

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.kt 794ms 80ms 581.9MB 1017ms 130ms kotlin/jvm 21.0.12

Input: 15

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.kt 188ms 30ms 159.7MB 233ms 30ms kotlin/jvm 21.0.12

coro-prime-sieve

Input: 4000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
2-m.kt 3342ms 283ms 229.6MB 12590ms 123ms kotlin/jvm 21.0.12
1.kt 3615ms 290ms 219.6MB 4723ms 107ms kotlin/jvm 21.0.12

Input: 1000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1-m.kt 738ms 7.2ms 77.4MB 1727ms 47ms kotlin/jvm 21.0.12
2-m.kt 1625ms 206ms 97.5MB 5807ms 100ms kotlin/jvm 21.0.12

helloworld

Input: QwQ

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1-m.kt 87ms 4.3ms 46.2MB 136ms 12ms kotlin/jvm 21.0.12

http-server

Input: 3000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
2-m.kt 9841ms 283ms 341.7MB 32387ms 3343ms kotlin/jvm 21.0.12
1-m.kt 11376ms 242ms 433.1MB 37790ms 4520ms kotlin/jvm 21.0.12

Input: 500

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
2-m.kt 3791ms 276ms 249.0MB 11797ms 810ms kotlin/jvm 21.0.12
1-m.kt 3917ms 180ms 275.4MB 12153ms 857ms kotlin/jvm 21.0.12

json-serde

Input: sample 5000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1-m.kt 1371ms 105ms 176.1MB 3830ms 140ms kotlin/jvm 21.0.12

Input: canada 15

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1-m.kt 3079ms 117ms 749.4MB 7240ms 250ms kotlin/jvm 21.0.12

lru

Input: 1000 1000000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1-m.kt 284ms 4.7ms 95.4MB 503ms 33ms kotlin/jvm 21.0.12
2-m.kt 389ms 13ms 99.5MB 863ms 27ms kotlin/jvm 21.0.12

Input: 1000 3000000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1-m.kt 482ms 4.8ms 201.4MB 717ms 47ms kotlin/jvm 21.0.12
2-m.kt 543ms 5.7ms 209.8MB 993ms 67ms kotlin/jvm 21.0.12

Input: 100 500000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1-m.kt 255ms 1.9ms 91.1MB 500ms 37ms kotlin/jvm 21.0.12
2-m.kt 302ms 15ms 95.4MB 693ms 23ms kotlin/jvm 21.0.12

merkletrees

Input: 17

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.kt 641ms 8.2ms 676.7MB 820ms 93ms kotlin/jvm 21.0.12

Input: 15

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1-m.kt 250ms 11ms 205.0MB 363ms 67ms kotlin/jvm 21.0.12

nbody

Input: 5000000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.kt 884ms 6.3ms 49.9MB 980ms 17ms kotlin/jvm 21.0.12

Input: 500000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1-m.kt 208ms 14ms 49.7MB 297ms 17ms kotlin/jvm 21.0.12

pidigits

Input: 8000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.kt 5427ms 177ms 419.0MB 6873ms 170ms kotlin/jvm 21.0.12

Input: 4000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1-m.kt 1629ms 66ms 362.2MB 3007ms 117ms kotlin/jvm 21.0.12

regex-redux

Input: 2500000_in

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.kt 8673ms 241ms 178.9MB 9617ms 70ms kotlin/jvm 21.0.12

Input: 250000_in

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1-m.kt 1293ms 57ms 133.7MB 2110ms 47ms kotlin/jvm 21.0.12

secp256k1

Input: 2000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.kt 5266ms 83ms 228.7MB 6800ms 87ms kotlin/jvm 21.0.12

Input: 500

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1-m.kt 1750ms 44ms 260.1MB 2960ms 50ms kotlin/jvm 21.0.12