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.

acton VS Go 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

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
acton 1-m.act 2140ms 43ms 38.5MB 3237ms 57ms acton 0.30.0
go 1-m.go 3946ms 44ms 39.9MB 8090ms 37ms go 1.26.8

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
acton 1.act 217ms 5.2ms 9.6MB 273ms 10ms acton 0.30.0
go 1.go 350ms 12ms 10.1MB 517ms 7ms go 1.26.8

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 1-m.go 1368ms 83ms 17.7MB 5267ms 7ms go 1.26.8
acton 1-m.act 13727ms 447ms 7.8MB 18197ms 12690ms acton 0.30.0

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 1-m.go 84ms 17ms 7.7MB 283ms 0ms go 1.26.8
acton 1-m.act 879ms 7.0ms 6.2MB 1110ms 823ms acton 0.30.0

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 1.go 248ms 30ms 10.5MB 240ms 0ms go 1.26.8
acton 1.act 275ms 10ms 7.5MB 260ms 17ms acton 0.30.0

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 1.go 65ms 7.2ms 10.1MB 53ms 0ms go 1.26.8
acton 1.act 94ms 15ms 5.5MB 83ms 7ms acton 0.30.0

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 3-m.go 979ms 13ms 5.8MB 3760ms 0ms go 1.26.8
acton 1.act 65939ms 148ms 5.6MB 75737ms 15533ms acton 0.30.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 3-m.go 94ms 5.5ms 5.8MB 260ms 0ms go 1.26.8
acton 1.act 4998ms 14ms 4.0MB 5640ms 1240ms acton 0.30.0

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 3-m.go 159ms 1.5ms 7.8MB 410ms 3ms go 1.26.8
acton 1.act 5589ms 17ms 12.8MB 6087ms 410ms acton 0.30.0

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 3-m.go 20ms 0.2ms 7.8MB 37ms 0ms go 1.26.8
acton 1.act 578ms 1.5ms 15.6MB 610ms 33ms acton 0.30.0

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 1.go 3.0ms 0.7ms 5.0MB 0ms 0ms go 1.26.8
acton 1.act 4.5ms 1.1ms 3.8MB 0ms 0ms acton 0.30.0

http-server

Input: 3000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 1-http2.go 199ms 7.0ms 60.7MB 623ms 73ms go 1.26.8
acton 1-m.act 496ms 19ms 6.8MB 940ms 253ms acton 0.30.0
go 1-m.go 609ms 89ms 172.2MB 1130ms 580ms go 1.26.8
go 2-m.go 629ms 27ms 174.8MB 1080ms 603ms go 1.26.8

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 1-http2.go 47ms 2.4ms 26.0MB 110ms 13ms go 1.26.8
acton 1-m.act 117ms 12ms 6.6MB 170ms 33ms acton 0.30.0
go 2-m.go 160ms 2.3ms 41.5MB 150ms 100ms go 1.26.8
go 1-m.go 167ms 5.5ms 39.2MB 153ms 110ms go 1.26.8

json-serde

Input: sample 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 2-ffi.go 73ms 4.7ms 41.2MB 73ms 3ms go 1.26.8
acton 1.act 141ms 3.0ms 49.9MB 187ms 10ms acton 0.30.0
go 1.go 216ms 18ms 20.7MB 207ms 0ms go 1.26.8

Input: canada 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 2-ffi.go 477ms 33ms 147.2MB 503ms 40ms go 1.26.8
acton 1-m.act 907ms 66ms 339.4MB 1680ms 57ms acton 0.30.0
go 1.go 1190ms 33ms 107.0MB 1183ms 17ms go 1.26.8

knucleotide

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 7-m.go 1057ms 31ms 42.5MB 3777ms 13ms go 1.26.8
acton 1-m.act 87144ms 724ms 194.2MB 135057ms 717ms acton 0.30.0

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 7-m.go 184ms 2.8ms 25.9MB 520ms 10ms go 1.26.8
acton 1-m.act 8692ms 20ms 74.4MB 13153ms 433ms acton 0.30.0

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 3.go 167ms 1.9ms 5.8MB 153ms 0ms go 1.26.8
acton 1.act 1615ms 85ms 13.3MB 2107ms 187ms acton 0.30.0

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 3.go 482ms 4.0ms 4.9MB 473ms 0ms go 1.26.8
acton 1.act 4706ms 236ms 6.1MB 6103ms 523ms acton 0.30.0

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 3.go 75ms 2.1ms 2.9MB 67ms 0ms go 1.26.8
acton 1.act 828ms 11ms 11.9MB 893ms 213ms acton 0.30.0

mandelbrot

Input: 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
acton 1.act 4758ms 11ms 13.7MB 5307ms 233ms acton 0.30.0
go 1.go 5080ms 21ms 7.8MB 5073ms 3ms go 1.26.8

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
acton 1.act 211ms 5.6ms 12.3MB 213ms 20ms acton 0.30.0
go 1.go 212ms 1.8ms 5.8MB 200ms 0ms go 1.26.8

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 2-m.go 2861ms 32ms 35.4MB 5927ms 33ms go 1.26.8
go 1-m.go 3072ms 206ms 36.8MB 5667ms 47ms go 1.26.8
acton 1.act 4999ms 46ms 83.6MB 6123ms 57ms acton 0.30.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 1-m.go 617ms 73ms 14.2MB 1040ms 43ms go 1.26.8
go 2-m.go 642ms 38ms 14.3MB 1227ms 20ms go 1.26.8
acton 1.act 1097ms 13ms 31.2MB 1333ms 33ms acton 0.30.0

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 1.go 668ms 14ms 5.0MB 657ms 0ms go 1.26.8
acton 1.act 4728ms 31ms 6.0MB 5217ms 733ms acton 0.30.0

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 1.go 74ms 3.6ms 5.6MB 63ms 0ms go 1.26.8
acton 1.act 478ms 5.0ms 12.1MB 517ms 73ms acton 0.30.0

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 1.go 984ms 2.2ms 73.9MB 970ms 3ms go 1.26.8
go 2.go 1267ms 63ms 20.8MB 1250ms 10ms go 1.26.8
acton 1.act 8124ms 92ms 725.4MB 10360ms 120ms acton 0.30.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 1.go 177ms 2.2ms 21.8MB 170ms 0ms go 1.26.8
go 2.go 285ms 10.0ms 9.4MB 273ms 0ms go 1.26.8
acton 1.act 1965ms 40ms 250.3MB 2377ms 47ms acton 0.30.0

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 8.go 1276ms 10ms 10.7MB 1260ms 0ms go 1.26.8
acton 1-m.act 5009ms 46ms 14.3MB 6123ms 1420ms acton 0.30.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 8.go 305ms 3.5ms 10.6MB 290ms 0ms go 1.26.8
acton 1.act 1277ms 11ms 7.7MB 1540ms 373ms acton 0.30.0

regex-redux

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 3.go 27882ms 432ms 149.1MB 27900ms 67ms go 1.26.8
acton 1.act timeout (120s) — — — — acton 0.30.0

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 3.go 2893ms 31ms 22.2MB 2887ms 10ms go 1.26.8
acton 1-m.act 12513ms 174ms 101.1MB 20447ms 570ms acton 0.30.0

secp256k1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 0-ffi.go 148ms 20ms 7.3MB 133ms 3ms go 1.26.8
acton 1.act 5761ms 42ms 4.0MB 6240ms 873ms acton 0.30.0

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 0-ffi.go 38ms 1.1ms 7.4MB 30ms 0ms go 1.26.8
acton 1.act 1453ms 25ms 4.0MB 1557ms 220ms acton 0.30.0

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 4-m.go 5816ms 1.9ms 7.8MB 22930ms 10ms go 1.26.8
go 1.go 11055ms 15ms 5.8MB 11050ms 7ms go 1.26.8
acton 1-m.act 105769ms 1188ms 5.7MB 163880ms 10223ms acton 0.30.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 4-m.go 1460ms 2.3ms 5.8MB 5700ms 3ms go 1.26.8
go 1.go 2775ms 4.4ms 5.8MB 2763ms 0ms go 1.26.8
acton 1-m.act 26160ms 70ms 8.7MB 38903ms 3493ms acton 0.30.0

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 4-m.go 369ms 0.7ms 5.8MB 1390ms 0ms go 1.26.8
go 1.go 698ms 5.8ms 5.8MB 687ms 3ms go 1.26.8
acton 1.act 6035ms 45ms 4.4MB 7950ms 1010ms acton 0.30.0