Programming Language and compiler
Benchmarks

D VS Javascript benchmarks

Current benchmark data was generated on Sun Jul 13 2025, full log can be found HERE

CONTRIBUTIONS are WELCOME!

[x86_64][4 cores] AMD EPYC 7763 64-Core Processor (Model 1)

* -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
javascript 1.js 1052ms 7.6ms 474.5MB 977ms 230ms node 24.4.0
javascript 1-m.js 1079ms 165ms 176.6MB 1527ms 260ms bun 1.2.18
d 1.d 2199ms 4.7ms 312.4MB 2163ms 43ms ldc2 1.41.0
d 1.d 3022ms 5.5ms 314.5MB 3190ms 57ms dmd 2.111.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 98ms 1.3ms 77.8MB 77ms 27ms bun 1.2.18
javascript 1.js 128ms 1.6ms 81.3MB 130ms 20ms node 24.4.0
d 1.d 205ms 3.7ms 207.6MB 177ms 17ms ldc2 1.41.0
d 1.d 262ms 2.2ms 211.2MB 230ms 17ms dmd 2.111.0

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 1600ms 6.3ms 189.8MB 1570ms 100ms node 24.4.0
javascript 1.js 2457ms 68ms 101.6MB 2500ms 63ms bun 1.2.18
d 1.d timeout 0.0ms 16.5MB 4960ms 30ms dmd 2.111.0
d 1.d timeout 0.0ms 15.3MB 4970ms 20ms ldc2 1.41.0

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 157ms 1.8ms 75.4MB 143ms 23ms node 24.4.0
javascript 1.js 216ms 4.5ms 88.7MB 250ms 33ms bun 1.2.18
d 1.d 1063ms 16ms 10.2MB 1037ms 13ms ldc2 1.41.0
d 1.d 1368ms 10ms 12.1MB 1350ms 10ms dmd 2.111.0

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 278ms 4.4ms 67.5MB 290ms 27ms node 24.4.0
javascript 1.js 518ms 1.5ms 75.6MB 490ms 23ms bun 1.2.18
d 1.d 2551ms 4.2ms 8.1MB 2540ms 0ms ldc2 1.41.0
d 1.d 2867ms 4.2ms 10.3MB 2857ms 0ms dmd 2.111.0

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 126ms 2.6ms 63.6MB 117ms 13ms node 24.4.0
d 1.d 441ms 0.9ms 8.1MB 430ms 0ms ldc2 1.41.0
javascript 1.js 511ms 2.2ms 65.1MB 483ms 20ms bun 1.2.18
d 1.d 521ms 1.5ms 10.4MB 510ms 0ms dmd 2.111.0

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1-im.d 377ms 1.9ms 3.0MB 1423ms 0ms ldc2 1.41.0
d 2-im.d 1130ms 21ms 3.0MB 4303ms 3ms ldc2 1.41.0
d 1-i.d 1488ms 1.6ms 2.9MB 1480ms 0ms ldc2 1.41.0
d 1.d 3115ms 16ms 2.9MB 3107ms 0ms ldc2 1.41.0
d 2-i.d 3226ms 2.2ms 2.9MB 3217ms 0ms ldc2 1.41.0
d 1.d 3535ms 4.3ms 4.6MB 3527ms 0ms dmd 2.111.0
d 1-im.d 4491ms 66ms 4.8MB 17510ms 0ms dmd 2.111.0
d 1-i.d timeout 0.0ms 4.6MB 4990ms 0ms dmd 2.111.0
d 2-i.d timeout 0.0ms 4.5MB 4990ms 0ms dmd 2.111.0
d 2-im.d timeout 0.0ms 4.9MB 19723ms 0ms dmd 2.111.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1-im.d 37ms 1.0ms 3.0MB 110ms 0ms ldc2 1.41.0
d 2-im.d 96ms 1.9ms 3.0MB 350ms 0ms ldc2 1.41.0
d 1-i.d 123ms 0.1ms 2.9MB 120ms 0ms ldc2 1.41.0
d 1.d 264ms 3.2ms 2.9MB 253ms 0ms ldc2 1.41.0
d 2-i.d 266ms 0.6ms 2.8MB 260ms 0ms ldc2 1.41.0
d 1.d 297ms 3.2ms 4.6MB 290ms 0ms dmd 2.111.0
d 1-im.d 377ms 1.2ms 4.9MB 1430ms 0ms dmd 2.111.0
d 2-im.d 527ms 0.8ms 4.9MB 2003ms 0ms dmd 2.111.0
d 1-i.d 882ms 15ms 4.6MB 873ms 0ms dmd 2.111.0
d 2-i.d 1390ms 1.3ms 4.6MB 1380ms 0ms dmd 2.111.0

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 111ms 2.1ms 2.9MB 100ms 0ms ldc2 1.41.0
d 1.d 640ms 2.7ms 4.6MB 630ms 0ms dmd 2.111.0

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 14ms 0.5ms 2.9MB 10ms 0ms ldc2 1.41.0
d 1.d 68ms 0.4ms 4.8MB 60ms 0ms dmd 2.111.0

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 1.6ms 0.1ms 3.0MB 0ms 0ms ldc2 1.41.0
d 1.d 2.1ms 0.2ms 5.1MB 0ms 0ms dmd 2.111.0
javascript 1.js 12ms 0.4ms 31.6MB 0ms 0ms bun 1.2.18
javascript 1.js 31ms 0.6ms 50.8MB 16ms 6ms node 24.4.0

json-serde

Input: sample 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 2.d 59ms 0.6ms 15.7MB 63ms 7ms ldc2 1.41.0
javascript 1.js 64ms 1.3ms 62.4MB 37ms 13ms bun 1.2.18
javascript 1.js 102ms 0.9ms 74.8MB 90ms 20ms node 24.4.0
d 2.d 239ms 2.1ms 22.7MB 237ms 7ms dmd 2.111.0

Input: canada 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 352ms 0.8ms 200.9MB 317ms 83ms bun 1.2.18
d 2.d 464ms 3.4ms 139.5MB 433ms 27ms ldc2 1.41.0
javascript 1.js 575ms 2.3ms 204.0MB 600ms 110ms node 24.4.0
d 2.d 2474ms 8.3ms 158.3MB 2493ms 30ms dmd 2.111.0

knucleotide

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1-m.d 643ms 26ms 48.5MB 2040ms 13ms ldc2 1.41.0
d 1-m.d 1937ms 33ms 50.0MB 5567ms 10ms dmd 2.111.0

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1-m.d 95ms 8.6ms 39.5MB 253ms 23ms ldc2 1.41.0
d 1-m.d 211ms 7.1ms 39.9MB 597ms 10ms dmd 2.111.0

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 130ms 0.9ms 6.2MB 120ms 0ms ldc2 1.41.0
d 1.d 175ms 1.9ms 7.9MB 163ms 3ms dmd 2.111.0
javascript 2.js 308ms 3.4ms 64.9MB 300ms 10ms node 24.4.0
javascript 1.js 572ms 4.7ms 63.7MB 557ms 10ms node 24.4.0
javascript 2.js 688ms 11ms 123.5MB 753ms 57ms bun 1.2.18
javascript 1.js 822ms 6.8ms 106.5MB 900ms 87ms bun 1.2.18

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 377ms 2.3ms 5.9MB 367ms 10ms ldc2 1.41.0
d 1.d 510ms 2.0ms 7.9MB 497ms 10ms dmd 2.111.0
javascript 2.js 837ms 7.0ms 71.6MB 820ms 17ms node 24.4.0
javascript 1.js 1623ms 6.8ms 70.0MB 1603ms 13ms node 24.4.0
javascript 2.js 1931ms 13ms 123.3MB 2110ms 67ms bun 1.2.18
javascript 1.js 2398ms 29ms 111.6MB 2653ms 207ms bun 1.2.18

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 58ms 0.4ms 5.9MB 50ms 0ms ldc2 1.41.0
d 1.d 80ms 0.5ms 8.1MB 70ms 0ms dmd 2.111.0
javascript 2.js 163ms 0.9ms 59.3MB 157ms 10ms node 24.4.0
javascript 1.js 169ms 0.4ms 61.0MB 153ms 10ms node 24.4.0
javascript 1.js 317ms 1.9ms 130.9MB 350ms 73ms bun 1.2.18
javascript 2.js 372ms 1.1ms 125.8MB 400ms 50ms bun 1.2.18

mandelbrot

Input: 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 367ms 1.1ms 6.5MB 353ms 0ms ldc2 1.41.0
d 1.d 2143ms 64ms 9.4MB 2130ms 0ms dmd 2.111.0

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 18ms 0.3ms 3.0MB 10ms 0ms ldc2 1.41.0
d 1.d 92ms 2.4ms 4.6MB 87ms 0ms dmd 2.111.0

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1-m.js 468ms 20ms 136.0MB 607ms 117ms bun 1.2.18
javascript 1.js 563ms 3.7ms 230.8MB 563ms 117ms node 24.4.0
d 1.d 1096ms 2.5ms 312.7MB 1057ms 40ms ldc2 1.41.0
d 1.d 1850ms 6.1ms 314.9MB 1977ms 50ms dmd 2.111.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 117ms 2.5ms 85.9MB 103ms 30ms bun 1.2.18
javascript 1.js 157ms 1.0ms 100.4MB 153ms 33ms node 24.4.0
d 1.d 230ms 1.2ms 312.7MB 190ms 27ms ldc2 1.41.0
d 1.d 359ms 1.7ms 315.0MB 327ms 27ms dmd 2.111.0

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 360ms 0.2ms 2.9MB 350ms 0ms ldc2 1.41.0
d 2.d 361ms 1.9ms 2.9MB 350ms 0ms ldc2 1.41.0
javascript 6.js 455ms 2.0ms 58.8MB 447ms 3ms node 24.4.0
javascript 6.js 607ms 14ms 44.8MB 610ms 0ms bun 1.2.18
d 1.d 678ms 2.2ms 4.6MB 670ms 0ms dmd 2.111.0
d 2.d 2033ms 7.7ms 4.8MB 2023ms 0ms dmd 2.111.0

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 2.d 38ms 0.3ms 2.9MB 30ms 0ms ldc2 1.41.0
d 1.d 39ms 0.4ms 2.9MB 30ms 0ms ldc2 1.41.0
d 1.d 72ms 0.1ms 4.8MB 60ms 0ms dmd 2.111.0
javascript 6.js 79ms 3.2ms 58.9MB 67ms 10ms node 24.4.0
javascript 6.js 80ms 1.8ms 44.9MB 83ms 7ms bun 1.2.18
d 2.d 207ms 2.8ms 4.8MB 197ms 0ms dmd 2.111.0

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 300ms 2.3ms 45.7MB 287ms 0ms ldc2 1.41.0
d 1.d 347ms 3.8ms 79.3MB 333ms 3ms dmd 2.111.0
d 2.d 843ms 2.4ms 49.7MB 830ms 3ms ldc2 1.41.0
d 2.d 1172ms 3.3ms 49.3MB 1157ms 3ms dmd 2.111.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 64ms 3.3ms 15.7MB 53ms 0ms ldc2 1.41.0
d 1.d 76ms 1.6ms 25.2MB 63ms 0ms dmd 2.111.0
d 2.d 213ms 1.6ms 17.7MB 200ms 0ms ldc2 1.41.0
d 2.d 291ms 1.5ms 19.6MB 280ms 0ms dmd 2.111.0

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 2431ms 4.5ms 8.1MB 2407ms 407ms ldc2 1.41.0
d 1.d 4429ms 9.8ms 10.5MB 4377ms 480ms dmd 2.111.0
javascript 3.js 4804ms 45ms 122.6MB 4760ms 47ms node 24.4.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 584ms 4.3ms 8.1MB 563ms 103ms ldc2 1.41.0
javascript 3.js 1034ms 5.1ms 73.9MB 1010ms 17ms node 24.4.0
d 1.d 1055ms 3.8ms 10.3MB 1050ms 97ms dmd 2.111.0

regex-redux

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 3.d 583ms 1.9ms 174.2MB 767ms 27ms ldc2 1.41.0
d 3.d 1212ms 9.4ms 177.2MB 1397ms 27ms dmd 2.111.0

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 3.d 65ms 0.3ms 27.6MB 77ms 0ms ldc2 1.41.0
d 3.d 126ms 1.3ms 31.7MB 133ms 7ms dmd 2.111.0

secp256k1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 2515ms 10ms 62.1MB 2517ms 10ms node 24.4.0
javascript 1.js 2811ms 7.5ms 83.4MB 2830ms 50ms bun 1.2.18
d 1.d 4782ms 7.8ms 4.0MB 4757ms 360ms ldc2 1.41.0
d 1.d timeout 0.0ms 6.5MB 4963ms 290ms dmd 2.111.0

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 672ms 3.5ms 58.8MB 680ms 7ms node 24.4.0
javascript 1.js 742ms 1.2ms 82.3MB 740ms 30ms bun 1.2.18
d 1.d 1196ms 6.4ms 3.9MB 1190ms 77ms ldc2 1.41.0
d 1.d 2035ms 6.3ms 6.8MB 2023ms 110ms dmd 2.111.0

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 6-m.js 2178ms 17ms 118.9MB 8247ms 70ms node 24.4.0
d 1.d 3594ms 2.3ms 4.0MB 3583ms 0ms ldc2 1.41.0
d 1.d 3630ms 25ms 5.9MB 3620ms 0ms dmd 2.111.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 6-m.js 654ms 3.1ms 119.7MB 2343ms 57ms node 24.4.0
d 1.d 901ms 0.5ms 3.5MB 890ms 0ms ldc2 1.41.0
d 1.d 920ms 0.8ms 5.3MB 910ms 0ms dmd 2.111.0

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 227ms 0.1ms 3.3MB 220ms 0ms ldc2 1.41.0
d 1.d 233ms 1.1ms 4.9MB 220ms 0ms dmd 2.111.0
javascript 6-m.js 273ms 2.7ms 116.3MB 840ms 53ms node 24.4.0