Programming Language and compiler
Benchmarks

Python VS D benchmarks

Current benchmark data was generated on Mon Mar 31 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
python 1.py 1210ms 7.0ms 96.2MB 1147ms 47ms pypy 3.10.16
d 1.d 1796ms 23ms 312.6MB 1763ms 37ms ldc2 1.40.1
d 1.d 2658ms 12ms 314.7MB 2843ms 40ms dmd 2.110.0
python 1.py timeout 0.0ms 40.8MB 4963ms 20ms cpython 3.13.2
python 1.py timeout 0.0ms 40.5MB 4747ms 240ms pyston 3.8.12

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 95ms 1.1ms 68.8MB 67ms 17ms pypy 3.10.16
d 1.d 163ms 2.1ms 209.9MB 137ms 13ms ldc2 1.40.1
d 1.d 229ms 3.0ms 212.0MB 200ms 10ms dmd 2.110.0
python 1.py 479ms 4.3ms 11.9MB 453ms 10ms pyston 3.8.12
python 1.py 718ms 7.5ms 12.6MB 703ms 0ms cpython 3.13.2

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 1217ms 27ms 107.0MB 1170ms 30ms pypy 3.10.16
python 1.py 2643ms 6.3ms 25.0MB 2620ms 13ms cpython 3.13.2
d 1.d timeout 0.0ms 18.0MB 4970ms 17ms dmd 2.110.0
d 1.d timeout 0.0ms 16.5MB 4967ms 20ms ldc2 1.40.1
python 1.py timeout 0.0ms 17.3MB 4980ms 7ms pyston 3.8.12

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 224ms 3.9ms 86.3MB 190ms 20ms pypy 3.10.16
python 1.py 228ms 1.1ms 20.2MB 207ms 10ms cpython 3.13.2
python 1.py 685ms 12ms 16.8MB 667ms 7ms pyston 3.8.12
d 1.d 1026ms 5.0ms 12.3MB 1000ms 13ms ldc2 1.40.1
d 1.d 1314ms 5.4ms 14.5MB 1293ms 10ms dmd 2.110.0

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 254ms 5.1ms 83.6MB 217ms 20ms pypy 3.10.16
python 1.py 360ms 1.5ms 12.5MB 343ms 3ms cpython 3.13.2
python 1.py 2006ms 5.2ms 9.6MB 1990ms 0ms pyston 3.8.12
d 1.d 2552ms 5.3ms 8.1MB 2543ms 0ms ldc2 1.40.1
d 1.d 2909ms 4.5ms 10.2MB 2897ms 3ms dmd 2.110.0

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 100ms 1.7ms 63.4MB 73ms 13ms pypy 3.10.16
python 1.py 139ms 55ms 12.0MB 100ms 0ms cpython 3.13.2
python 1.py 350ms 0.8ms 8.8MB 340ms 0ms pyston 3.8.12
d 1.d 451ms 9.4ms 8.1MB 440ms 0ms ldc2 1.40.1
d 1.d 527ms 1.2ms 10.2MB 517ms 0ms dmd 2.110.0

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 193ms 1.0ms 49.2MB 180ms 3ms ldc2 1.40.1
d 1.d 624ms 3.3ms 49.1MB 613ms 3ms dmd 2.110.0
python 1.py 1852ms 1.6ms 88.8MB 1807ms 30ms pypy 3.10.16
python 5-m.py 2282ms 30ms 65.4MB 3493ms 843ms pypy 3.10.16
python 5-m.py 2455ms 13ms 12.5MB 3537ms 1010ms pyston 3.8.12
python 1.py 3017ms 14ms 8.1MB 3007ms 0ms pyston 3.8.12
python 5-m.py 3351ms 11ms 13.5MB 4443ms 913ms cpython 3.13.2
python 1.py 4656ms 26ms 8.8MB 4640ms 0ms cpython 3.13.2

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 24ms 0.4ms 11.1MB 17ms 0ms ldc2 1.40.1
d 1.d 67ms 0.6ms 13.1MB 60ms 0ms dmd 2.110.0
python 1.py 251ms 5.7ms 63.3MB 223ms 13ms pypy 3.10.16
python 5-m.py 311ms 1.4ms 12.4MB 393ms 143ms pyston 3.8.12
python 1.py 318ms 0.3ms 8.1MB 310ms 0ms pyston 3.8.12
python 5-m.py 397ms 5.6ms 13.6MB 480ms 133ms cpython 3.13.2
python 5-m.py 445ms 6.3ms 65.4MB 737ms 310ms pypy 3.10.16
python 1.py 488ms 7.2ms 8.6MB 477ms 0ms cpython 3.13.2

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 1.8ms 0.1ms 2.9MB 0ms 0ms ldc2 1.40.1
d 1.d 2.2ms 0.3ms 5.0MB 0ms 0ms dmd 2.110.0
python 1.py 11ms 0.5ms 7.6MB 0ms 0ms pyston 3.8.12
python 1.py 14ms 1.0ms 8.6MB 10ms 0ms cpython 3.13.2
python 1.py 29ms 1.1ms 51.6MB 10ms 10ms pypy 3.10.16

http-server

Input: 3000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 2132ms 36ms 26.8MB 1117ms 1563ms pyston 3.8.12
python 1.py 2559ms 231ms 27.3MB 1567ms 1620ms cpython 3.13.2
python 1.py 4884ms 99ms 101.8MB 2890ms 1217ms pypy 3.10.16

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 1096ms 17ms 21.3MB 240ms 270ms pyston 3.8.12
python 1.py 1100ms 22ms 22.9MB 307ms 290ms cpython 3.13.2
python 1.py 1425ms 69ms 87.3MB 723ms 237ms pypy 3.10.16

json-serde

Input: sample 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 2.d 58ms 0.8ms 15.7MB 60ms 10ms ldc2 1.40.1
python 1.py 194ms 6.5ms 38.4MB 163ms 20ms pyston 3.8.12
python 1.py 214ms 1.4ms 38.6MB 187ms 13ms cpython 3.13.2
d 2.d 238ms 1.6ms 22.5MB 243ms 7ms dmd 2.110.0
python 1.py 298ms 2.7ms 89.5MB 260ms 20ms pypy 3.10.16

Input: canada 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 2.d 451ms 1.8ms 141.8MB 430ms 23ms ldc2 1.40.1
python 1.py 1815ms 17ms 220.5MB 1643ms 160ms pyston 3.8.12
python 1.py 1915ms 31ms 222.2MB 1830ms 73ms pypy 3.10.16
python 1.py 1927ms 7.1ms 221.4MB 1830ms 87ms cpython 3.13.2
d 2.d 2467ms 2.2ms 158.8MB 2483ms 27ms dmd 2.110.0

knucleotide

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1-m.d 671ms 8.6ms 47.3MB 2010ms 17ms ldc2 1.40.1
d 1-m.d 1945ms 21ms 49.5MB 5917ms 17ms dmd 2.110.0
python 3-m.py 2435ms 14ms 136.4MB 8277ms 343ms pypy 3.10.16
python 3-m.py 3135ms 60ms 34.3MB 11840ms 123ms pyston 3.8.12
python 3.py timeout 0.0ms 35.6MB 93ms 20ms cpython 3.13.2

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1-m.d 86ms 1.5ms 39.7MB 243ms 7ms ldc2 1.40.1
d 1-m.d 210ms 11ms 41.1MB 620ms 7ms dmd 2.110.0
python 3-m.py 389ms 1.1ms 75.7MB 983ms 170ms pypy 3.10.16
python 3-m.py 393ms 4.9ms 14.2MB 1303ms 70ms pyston 3.8.12
python 3-m.py 634ms 4.3ms 15.1MB 2240ms 53ms cpython 3.13.2

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 129ms 1.6ms 5.9MB 120ms 0ms ldc2 1.40.1
python 2.py 144ms 0.5ms 58.3MB 120ms 10ms pypy 3.10.16
d 1.d 176ms 0.6ms 7.8MB 167ms 3ms dmd 2.110.0
python 1.py 179ms 2.6ms 59.4MB 157ms 10ms pypy 3.10.16
python 1.py 719ms 5.8ms 8.9MB 707ms 0ms pyston 3.8.12
python 2.py 833ms 11ms 8.5MB 820ms 0ms pyston 3.8.12
python 1.py 1138ms 4.4ms 9.4MB 1127ms 0ms cpython 3.13.2
python 2.py 1348ms 40ms 9.0MB 1337ms 0ms cpython 3.13.2

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 2.py 338ms 2.7ms 59.3MB 320ms 3ms pypy 3.10.16
d 1.d 375ms 1.9ms 5.9MB 363ms 13ms ldc2 1.40.1
python 1.py 380ms 6.1ms 60.3MB 353ms 10ms pypy 3.10.16
d 1.d 513ms 1.8ms 7.8MB 497ms 17ms dmd 2.110.0
python 1.py 2132ms 18ms 8.9MB 2123ms 0ms pyston 3.8.12
python 2.py 2501ms 6.7ms 8.5MB 2490ms 0ms pyston 3.8.12
python 1.py 3370ms 28ms 9.4MB 3357ms 0ms cpython 3.13.2
python 2.py 3950ms 27ms 9.0MB 3937ms 0ms cpython 3.13.2

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 57ms 0.4ms 5.9MB 50ms 0ms ldc2 1.40.1
d 1.d 79ms 1.4ms 8.2MB 70ms 0ms dmd 2.110.0
python 2.py 106ms 5.2ms 57.9MB 83ms 10ms pypy 3.10.16
python 1.py 122ms 1.9ms 58.7MB 100ms 10ms pypy 3.10.16
python 1.py 348ms 6.0ms 8.5MB 333ms 0ms pyston 3.8.12
python 2.py 387ms 2.2ms 8.1MB 373ms 0ms pyston 3.8.12
python 1.py 539ms 4.9ms 9.0MB 523ms 0ms cpython 3.13.2
python 2.py 634ms 5.0ms 8.6MB 623ms 0ms cpython 3.13.2

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 962ms 3.8ms 312.7MB 933ms 30ms ldc2 1.40.1
d 1.d 1727ms 3.9ms 314.7MB 1863ms 40ms dmd 2.110.0
python 1.py 2202ms 10ms 203.1MB 2083ms 107ms pypy 3.10.16
python 1.py timeout 0.0ms 93.9MB 4950ms 40ms cpython 3.13.2
python 1.py timeout 0.0ms 130.4MB 4940ms 50ms pyston 3.8.12

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 194ms 1.6ms 312.6MB 160ms 20ms ldc2 1.40.1
d 1.d 334ms 0.6ms 314.7MB 303ms 23ms dmd 2.110.0
python 1.py 377ms 5.4ms 105.2MB 323ms 40ms pypy 3.10.16
python 1.py 3111ms 151ms 37.2MB 3083ms 13ms cpython 3.13.2
python 1.py timeout 0.0ms 48.9MB 4940ms 43ms pyston 3.8.12

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 361ms 1.4ms 2.9MB 350ms 0ms ldc2 1.40.1
d 2.d 364ms 3.8ms 2.9MB 353ms 0ms ldc2 1.40.1
d 1.d 684ms 1.4ms 4.6MB 673ms 0ms dmd 2.110.0
python 2.py 1353ms 7.7ms 60.3MB 1330ms 10ms pypy 3.10.16
d 2.d 2033ms 2.7ms 4.6MB 2023ms 0ms dmd 2.110.0
python 1.py 2647ms 8.4ms 57.2MB 2623ms 10ms pypy 3.10.16
python 1.py timeout 0.0ms 8.6MB 4990ms 0ms cpython 3.13.2
python 2.py timeout 0.0ms 8.8MB 4990ms 0ms cpython 3.13.2
python 1.py timeout 0.0ms 8.3MB 4990ms 0ms pyston 3.8.12
python 2.py timeout 0.0ms 8.1MB 4990ms 0ms pyston 3.8.12

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 1.40.1
d 1.d 39ms 0.2ms 2.9MB 30ms 0ms ldc2 1.40.1
d 1.d 80ms 15ms 4.6MB 70ms 0ms dmd 2.110.0
python 2.py 182ms 1.3ms 58.1MB 160ms 10ms pypy 3.10.16
d 2.d 207ms 1.5ms 4.6MB 193ms 0ms dmd 2.110.0
python 1.py 299ms 2.7ms 57.1MB 280ms 10ms pypy 3.10.16
python 1.py 932ms 16ms 8.3MB 920ms 0ms pyston 3.8.12
python 2.py 1282ms 11ms 8.3MB 1270ms 0ms pyston 3.8.12
python 1.py 2968ms 4.6ms 8.8MB 2953ms 0ms cpython 3.13.2
python 2.py 3214ms 99ms 8.8MB 3200ms 0ms cpython 3.13.2

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 288ms 1.2ms 45.1MB 277ms 0ms ldc2 1.40.1
d 1.d 360ms 0.3ms 77.3MB 340ms 0ms dmd 2.110.0
d 2.d 842ms 0.8ms 49.1MB 823ms 0ms ldc2 1.40.1
d 2.d 1165ms 0.8ms 48.7MB 1150ms 7ms dmd 2.110.0
python 1.py 2527ms 58ms 369.5MB 2457ms 57ms pypy 3.10.16
python 2.py 3022ms 8.2ms 633.0MB 2873ms 137ms pyston 3.8.12
python 1.py 4719ms 120ms 320.4MB 4657ms 50ms pyston 3.8.12
python 1.py timeout 0.0ms 321.1MB 4960ms 27ms cpython 3.13.2
python 2.py timeout 0.0ms 633.6MB 4843ms 143ms cpython 3.13.2
python 2.py timeout 0.0ms 959.8MB 4730ms 260ms pypy 3.10.16

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 59ms 1.2ms 12.9MB 50ms 0ms ldc2 1.40.1
d 1.d 76ms 0.3ms 27.2MB 67ms 0ms dmd 2.110.0
d 2.d 207ms 0.4ms 17.0MB 193ms 0ms ldc2 1.40.1
d 2.d 293ms 2.4ms 19.0MB 280ms 0ms dmd 2.110.0
python 1.py 524ms 3.5ms 135.2MB 490ms 20ms pypy 3.10.16
python 2.py 734ms 1.6ms 164.2MB 697ms 27ms pyston 3.8.12
python 1.py 1045ms 7.6ms 86.0MB 1023ms 10ms pyston 3.8.12
python 2.py 1423ms 16ms 164.8MB 1380ms 30ms cpython 3.13.2
python 2.py 1530ms 19ms 290.2MB 1440ms 77ms pypy 3.10.16
python 1.py 2661ms 20ms 86.8MB 2640ms 10ms cpython 3.13.2

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 4.py 1915ms 5.6ms 8.9MB 1873ms 30ms pyston 3.8.12
python 4.py 1945ms 3.8ms 9.4MB 1893ms 40ms cpython 3.13.2
python 4.py 2174ms 1.1ms 89.4MB 2133ms 30ms pypy 3.10.16
d 1.d 2429ms 4.7ms 8.1MB 2357ms 440ms ldc2 1.40.1
d 1.d 4342ms 20ms 10.2MB 4310ms 447ms dmd 2.110.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 4.py 451ms 0.7ms 8.6MB 440ms 0ms pyston 3.8.12
python 4.py 468ms 3.4ms 9.0MB 457ms 0ms cpython 3.13.2
python 4.py 549ms 3.3ms 83.8MB 513ms 20ms pypy 3.10.16
d 1.d 578ms 1.1ms 8.0MB 553ms 100ms ldc2 1.40.1
d 1.d 1026ms 2.5ms 10.2MB 990ms 123ms dmd 2.110.0

regex-redux

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 3.d 577ms 2.9ms 171.9MB 760ms 17ms ldc2 1.40.1
d 3.d 1297ms 1.7ms 172.8MB 1497ms 13ms dmd 2.110.0
python 1.py 2244ms 5.8ms 243.6MB 2190ms 40ms pypy 3.10.16
python 1.py 4741ms 7.8ms 225.5MB 4550ms 173ms pyston 3.8.12
python 1.py timeout 0.0ms 146.4MB 4933ms 57ms cpython 3.13.2

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 3.d 64ms 4.3ms 25.1MB 77ms 0ms ldc2 1.40.1
d 3.d 137ms 3.3ms 30.4MB 150ms 0ms dmd 2.110.0
python 1.py 330ms 3.2ms 85.6MB 293ms 20ms pypy 3.10.16
python 1.py 497ms 6.0ms 29.8MB 463ms 17ms pyston 3.8.12
python 1.py 606ms 2.2ms 30.7MB 573ms 20ms cpython 3.13.2

secp256k1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 3178ms 4.3ms 8.3MB 3167ms 0ms pyston 3.8.12
python 1.py 3503ms 25ms 74.3MB 3470ms 20ms pypy 3.10.16
python 1.py 3792ms 25ms 8.6MB 3780ms 0ms cpython 3.13.2
d 1.d 4833ms 87ms 4.3MB 4803ms 357ms ldc2 1.40.1
d 1.d timeout 0.0ms 6.4MB 4937ms 307ms dmd 2.110.0

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 811ms 3.4ms 8.3MB 800ms 0ms pyston 3.8.12
python 1.py 973ms 13ms 8.6MB 963ms 0ms cpython 3.13.2
python 1.py 974ms 6.2ms 67.3MB 940ms 20ms pypy 3.10.16
d 1.d 1201ms 6.5ms 4.0MB 1190ms 83ms ldc2 1.40.1
d 1.d 2084ms 6.8ms 6.6MB 2040ms 137ms dmd 2.110.0

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 3594ms 3.1ms 3.9MB 3583ms 0ms ldc2 1.40.1
d 1.d 3637ms 18ms 8.3MB 3630ms 0ms dmd 2.110.0
python 8.py timeout 0.0ms 14.9MB 40ms 10ms cpython 3.13.2
python 8.py timeout 0.0ms 95.4MB 790ms 77ms pypy 3.10.16
python 8.py timeout 0.0ms 14.2MB 37ms 13ms pyston 3.8.12

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 901ms 0.5ms 3.4MB 890ms 0ms ldc2 1.40.1
d 1.d 923ms 4.7ms 5.3MB 913ms 0ms dmd 2.110.0
python 8.py timeout 0.0ms 14.4MB 43ms 10ms cpython 3.13.2
python 8.py timeout 0.0ms 96.7MB 1313ms 177ms pypy 3.10.16
python 8.py timeout 0.0ms 13.7MB 53ms 20ms pyston 3.8.12

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 228ms 0.9ms 3.1MB 220ms 0ms ldc2 1.40.1
d 1.d 233ms 1.6ms 4.9MB 223ms 0ms dmd 2.110.0
python 8-m.py 1974ms 19ms 92.9MB 6383ms 260ms pypy 3.10.16
python 8.py timeout 0.0ms 14.0MB 90ms 20ms cpython 3.13.2
python 8.py timeout 0.0ms 13.1MB 123ms 37ms pyston 3.8.12