Programming Language and compiler
Benchmarks

Python VS D benchmarks

Current benchmark data was generated on Tue Jul 01 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 1158ms 1.0ms 96.1MB 1093ms 53ms pypy 3.10.16
d 1.d 2206ms 5.4ms 312.8MB 2170ms 43ms ldc2 1.41.0
d 1.d 3040ms 21ms 314.5MB 3210ms 57ms dmd 2.111.0
python 1.py timeout 0.0ms 41.0MB 4963ms 17ms cpython 3.13.5
python 1.py timeout 0.0ms 40.5MB 4753ms 233ms pyston 3.8.12

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 93ms 0.2ms 68.8MB 67ms 17ms pypy 3.10.16
d 1.d 207ms 3.1ms 207.9MB 183ms 13ms ldc2 1.41.0
d 1.d 262ms 1.5ms 210.9MB 233ms 13ms dmd 2.111.0
python 1.py 477ms 1.2ms 11.9MB 453ms 13ms pyston 3.8.12
python 1.py 718ms 3.5ms 13.0MB 707ms 0ms cpython 3.13.5

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 1210ms 16ms 106.4MB 1167ms 30ms pypy 3.10.16
python 1.py 2689ms 24ms 25.4MB 2667ms 10ms cpython 3.13.5
d 1.d timeout 0.0ms 16.5MB 4957ms 30ms dmd 2.111.0
d 1.d timeout 0.0ms 16.6MB 4963ms 23ms ldc2 1.41.0
python 1.py timeout 0.0ms 17.4MB 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 220ms 5.3ms 84.7MB 183ms 27ms pypy 3.10.16
python 1.py 237ms 8.3ms 20.6MB 217ms 3ms cpython 3.13.5
python 1.py 648ms 13ms 16.8MB 633ms 0ms pyston 3.8.12
d 1.d 1049ms 6.5ms 10.3MB 1020ms 17ms ldc2 1.41.0
d 1.d 1387ms 5.6ms 12.1MB 1367ms 10ms dmd 2.111.0

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 252ms 1.9ms 83.5MB 217ms 20ms pypy 3.10.16
python 1.py 363ms 0.9ms 12.6MB 347ms 0ms cpython 3.13.5
python 1.py 2004ms 1.1ms 9.6MB 1990ms 0ms pyston 3.8.12
d 1.d 2551ms 3.5ms 8.0MB 2540ms 0ms ldc2 1.41.0
d 1.d 2871ms 10ms 10.5MB 2860ms 0ms dmd 2.111.0

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 102ms 2.6ms 63.7MB 77ms 13ms pypy 3.10.16
python 1.py 110ms 2.3ms 11.6MB 97ms 0ms cpython 3.13.5
python 1.py 352ms 0.5ms 8.8MB 340ms 0ms pyston 3.8.12
d 1.d 444ms 2.0ms 8.1MB 437ms 0ms ldc2 1.41.0
d 1.d 517ms 1.2ms 10.5MB 510ms 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 109ms 0.2ms 2.9MB 100ms 0ms ldc2 1.41.0
d 1.d 641ms 3.8ms 4.9MB 630ms 0ms dmd 2.111.0
python 1.py 1857ms 11ms 88.9MB 1810ms 30ms pypy 3.10.16
python 5-m.py 2292ms 35ms 65.6MB 3537ms 850ms pypy 3.10.16
python 5-m.py 2462ms 20ms 12.5MB 3543ms 983ms pyston 3.8.12
python 1.py 3024ms 23ms 8.1MB 3007ms 0ms pyston 3.8.12
python 5-m.py 3410ms 32ms 13.8MB 4480ms 947ms cpython 3.13.5
python 1.py 4667ms 43ms 9.0MB 4653ms 0ms cpython 3.13.5

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 14ms 1.5ms 3.0MB 10ms 0ms ldc2 1.41.0
d 1.d 68ms 0.9ms 4.8MB 60ms 0ms dmd 2.111.0
python 1.py 250ms 0.9ms 63.4MB 220ms 10ms pypy 3.10.16
python 5-m.py 315ms 11ms 12.5MB 390ms 157ms pyston 3.8.12
python 1.py 315ms 4.7ms 8.1MB 303ms 0ms pyston 3.8.12
python 5-m.py 407ms 7.3ms 13.8MB 483ms 143ms cpython 3.13.5
python 5-m.py 446ms 3.8ms 65.6MB 753ms 297ms pypy 3.10.16
python 1.py 484ms 2.4ms 9.0MB 470ms 0ms cpython 3.13.5

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 1.7ms 0.1ms 3.0MB 0ms 0ms ldc2 1.41.0
d 1.d 2.2ms 0.1ms 5.1MB 0ms 0ms dmd 2.111.0
python 1.py 12ms 0.7ms 7.6MB 10ms 0ms pyston 3.8.12
python 1.py 15ms 1.2ms 8.8MB 10ms 0ms cpython 3.13.5
python 1.py 30ms 0.9ms 51.7MB 6ms 12ms 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 2218ms 72ms 26.8MB 1067ms 1437ms pyston 3.8.12
python 1.py 2622ms 127ms 27.8MB 1607ms 1473ms cpython 3.13.5
python 1.py 4714ms 36ms 102.6MB 2843ms 1093ms pypy 3.10.16

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 1123ms 32ms 21.1MB 223ms 260ms pyston 3.8.12
python 1.py 1195ms 33ms 22.9MB 317ms 260ms cpython 3.13.5
python 1.py 1607ms 143ms 85.9MB 690ms 207ms 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 59ms 1.7ms 15.7MB 63ms 7ms ldc2 1.41.0
python 1.py 200ms 1.3ms 38.1MB 163ms 23ms pyston 3.8.12
python 1.py 222ms 2.1ms 38.6MB 193ms 17ms cpython 3.13.5
d 2.d 241ms 3.0ms 22.5MB 247ms 3ms dmd 2.111.0
python 1.py 302ms 3.5ms 88.8MB 263ms 27ms pypy 3.10.16

Input: canada 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 2.d 483ms 11ms 140.4MB 450ms 37ms ldc2 1.41.0
python 1.py 1850ms 9.9ms 220.5MB 1673ms 163ms pyston 3.8.12
python 1.py 1927ms 3.4ms 222.0MB 1820ms 93ms cpython 3.13.5
python 1.py 1928ms 14ms 222.7MB 1847ms 67ms pypy 3.10.16
d 2.d 2474ms 16ms 158.3MB 2490ms 33ms 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 713ms 31ms 47.5MB 2403ms 10ms ldc2 1.41.0
d 1-m.d 2035ms 101ms 50.6MB 6757ms 17ms dmd 2.111.0
python 3-m.py 2412ms 51ms 136.6MB 8240ms 337ms pypy 3.10.16
python 3-m.py 3142ms 31ms 34.2MB 11930ms 117ms pyston 3.8.12
python 3.py timeout 0.0ms 35.8MB 93ms 20ms cpython 3.13.5

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1-m.d 100ms 4.7ms 39.5MB 263ms 10ms ldc2 1.41.0
d 1-m.d 257ms 16ms 41.0MB 737ms 17ms dmd 2.111.0
python 3-m.py 385ms 6.3ms 75.8MB 977ms 150ms pypy 3.10.16
python 3-m.py 401ms 5.6ms 14.3MB 1327ms 67ms pyston 3.8.12
python 3-m.py 687ms 8.0ms 15.2MB 2437ms 67ms cpython 3.13.5

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 130ms 1.9ms 5.9MB 120ms 0ms ldc2 1.41.0
python 2.py 147ms 1.1ms 58.3MB 120ms 10ms pypy 3.10.16
python 1.py 178ms 1.7ms 59.4MB 153ms 10ms pypy 3.10.16
d 1.d 178ms 3.2ms 7.9MB 167ms 3ms dmd 2.111.0
python 1.py 730ms 8.0ms 8.9MB 720ms 0ms pyston 3.8.12
python 2.py 850ms 11ms 8.5MB 840ms 0ms pyston 3.8.12
python 1.py 1141ms 7.1ms 9.5MB 1133ms 0ms cpython 3.13.5
python 2.py 1304ms 8.0ms 9.3MB 1290ms 0ms cpython 3.13.5

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 2.py 339ms 1.2ms 60.5MB 317ms 10ms pypy 3.10.16
python 1.py 380ms 4.2ms 60.3MB 357ms 10ms pypy 3.10.16
d 1.d 385ms 2.3ms 5.9MB 370ms 17ms ldc2 1.41.0
d 1.d 520ms 2.3ms 7.9MB 513ms 13ms dmd 2.111.0
python 1.py 2148ms 10ms 8.9MB 2137ms 0ms pyston 3.8.12
python 2.py 2496ms 44ms 8.5MB 2483ms 0ms pyston 3.8.12
python 1.py 3362ms 46ms 9.5MB 3350ms 0ms cpython 3.13.5
python 2.py 3908ms 18ms 9.3MB 3897ms 0ms cpython 3.13.5

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 58ms 1.2ms 5.9MB 50ms 0ms ldc2 1.41.0
d 1.d 79ms 1.3ms 8.1MB 67ms 0ms dmd 2.111.0
python 2.py 107ms 3.6ms 58.2MB 80ms 10ms pypy 3.10.16
python 1.py 122ms 3.9ms 58.8MB 97ms 10ms pypy 3.10.16
python 1.py 355ms 5.9ms 8.5MB 343ms 0ms pyston 3.8.12
python 2.py 385ms 2.9ms 8.1MB 373ms 0ms pyston 3.8.12
python 1.py 537ms 11ms 9.3MB 527ms 0ms cpython 3.13.5
python 2.py 628ms 9.6ms 8.9MB 617ms 0ms cpython 3.13.5

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 1134ms 3.1ms 312.6MB 1097ms 40ms ldc2 1.41.0
d 1.d 1870ms 15ms 314.9MB 2007ms 47ms dmd 2.111.0
python 1.py 2196ms 9.7ms 202.5MB 2077ms 100ms pypy 3.10.16
python 1.py timeout 0.0ms 94.1MB 4960ms 27ms cpython 3.13.5
python 1.py timeout 0.0ms 130.3MB 4930ms 57ms pyston 3.8.12

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 232ms 1.5ms 312.8MB 190ms 30ms ldc2 1.41.0
d 1.d 361ms 4.2ms 314.8MB 330ms 30ms dmd 2.111.0
python 1.py 385ms 4.5ms 104.7MB 323ms 50ms pypy 3.10.16
python 1.py 3347ms 32ms 37.4MB 3317ms 13ms cpython 3.13.5
python 1.py timeout 0.0ms 48.9MB 4953ms 37ms 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 1.2ms 2.9MB 350ms 0ms ldc2 1.41.0
d 2.d 361ms 0.9ms 2.9MB 350ms 0ms ldc2 1.41.0
d 1.d 677ms 14ms 4.8MB 667ms 0ms dmd 2.111.0
python 2.py 1358ms 8.1ms 58.1MB 1333ms 10ms pypy 3.10.16
d 2.d 2033ms 5.4ms 4.8MB 2023ms 0ms dmd 2.111.0
python 1.py 2644ms 7.4ms 57.0MB 2620ms 10ms pypy 3.10.16
python 1.py timeout 0.0ms 8.9MB 4990ms 0ms cpython 3.13.5
python 2.py timeout 0.0ms 9.0MB 4990ms 0ms cpython 3.13.5
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 1.d 39ms 0.6ms 2.9MB 30ms 0ms ldc2 1.41.0
d 2.d 39ms 0.7ms 2.9MB 30ms 0ms ldc2 1.41.0
d 1.d 71ms 1.2ms 4.6MB 60ms 0ms dmd 2.111.0
python 2.py 182ms 1.2ms 57.9MB 160ms 10ms pypy 3.10.16
d 2.d 210ms 1.7ms 4.8MB 200ms 0ms dmd 2.111.0
python 1.py 304ms 1.2ms 57.1MB 280ms 10ms pypy 3.10.16
python 1.py 921ms 6.9ms 8.4MB 910ms 0ms pyston 3.8.12
python 2.py 1314ms 5.3ms 8.3MB 1300ms 0ms pyston 3.8.12
python 2.py 2943ms 21ms 9.0MB 2930ms 0ms cpython 3.13.5
python 1.py 3003ms 91ms 9.0MB 2990ms 0ms cpython 3.13.5

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 344ms 7.7ms 45.7MB 323ms 7ms ldc2 1.41.0
d 1.d 385ms 4.2ms 79.2MB 370ms 0ms dmd 2.111.0
d 2.d 854ms 0.6ms 49.7MB 833ms 10ms ldc2 1.41.0
d 2.d 1168ms 1.5ms 49.3MB 1150ms 10ms dmd 2.111.0
python 1.py 2563ms 130ms 369.7MB 2490ms 57ms pypy 3.10.16
python 2.py 2996ms 31ms 632.9MB 2817ms 167ms pyston 3.8.12
python 1.py 4717ms 60ms 320.4MB 4660ms 40ms pyston 3.8.12
python 1.py timeout 0.0ms 321.4MB 4967ms 23ms cpython 3.13.5
python 2.py timeout 0.0ms 633.8MB 4823ms 157ms cpython 3.13.5
python 2.py timeout 0.0ms 959.9MB 4717ms 263ms pypy 3.10.16

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 63ms 4.3ms 15.7MB 53ms 0ms ldc2 1.41.0
d 1.d 78ms 3.7ms 25.3MB 67ms 0ms dmd 2.111.0
d 2.d 211ms 1.2ms 17.8MB 200ms 0ms ldc2 1.41.0
d 2.d 297ms 1.9ms 19.7MB 280ms 0ms dmd 2.111.0
python 1.py 547ms 6.2ms 135.3MB 507ms 23ms pypy 3.10.16
python 2.py 723ms 2.9ms 164.2MB 683ms 27ms pyston 3.8.12
python 1.py 1065ms 10ms 86.0MB 1040ms 10ms pyston 3.8.12
python 2.py 1383ms 0.6ms 165.1MB 1343ms 27ms cpython 3.13.5
python 2.py 1508ms 4.4ms 290.3MB 1420ms 73ms pypy 3.10.16
python 1.py 2870ms 13ms 87.0MB 2847ms 10ms cpython 3.13.5

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 4.py 1929ms 6.9ms 8.9MB 1887ms 30ms pyston 3.8.12
python 4.py 1980ms 20ms 9.5MB 1927ms 43ms cpython 3.13.5
python 4.py 2185ms 3.8ms 89.6MB 2150ms 20ms pypy 3.10.16
d 1.d 2454ms 24ms 8.0MB 2420ms 417ms ldc2 1.41.0
d 1.d 4480ms 3.9ms 10.5MB 4400ms 500ms dmd 2.111.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 4.py 462ms 1.2ms 8.6MB 450ms 0ms pyston 3.8.12
python 4.py 480ms 6.7ms 9.4MB 470ms 0ms cpython 3.13.5
python 4.py 553ms 3.7ms 83.9MB 513ms 23ms pypy 3.10.16
d 1.d 587ms 3.4ms 8.1MB 567ms 103ms ldc2 1.41.0
d 1.d 1068ms 6.3ms 10.4MB 1033ms 127ms 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 584ms 5.1ms 172.3MB 770ms 20ms ldc2 1.41.0
d 3.d 1204ms 8.1ms 177.4MB 1390ms 27ms dmd 2.111.0
python 1.py 2263ms 15ms 243.6MB 2203ms 47ms pypy 3.10.16
python 1.py 4758ms 1.8ms 252.5MB 4570ms 170ms pyston 3.8.12
python 1.py timeout 0.0ms 130.2MB 4930ms 60ms cpython 3.13.5

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 3.d 63ms 1.5ms 28.5MB 70ms 0ms ldc2 1.41.0
d 3.d 126ms 0.1ms 31.6MB 133ms 3ms dmd 2.111.0
python 1.py 331ms 3.3ms 85.1MB 290ms 30ms pypy 3.10.16
python 1.py 510ms 17ms 30.3MB 477ms 20ms pyston 3.8.12
python 1.py 622ms 9.0ms 30.0MB 590ms 17ms cpython 3.13.5

secp256k1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 3168ms 17ms 8.4MB 3157ms 0ms pyston 3.8.12
python 1.py 3522ms 17ms 74.4MB 3483ms 23ms pypy 3.10.16
python 1.py 3760ms 8.9ms 8.9MB 3753ms 0ms cpython 3.13.5
d 1.d 4780ms 18ms 4.1MB 4747ms 363ms ldc2 1.41.0
d 1.d timeout 0.0ms 6.5MB 4950ms 303ms dmd 2.111.0

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 800ms 1.8ms 8.4MB 790ms 0ms pyston 3.8.12
python 1.py 949ms 2.1ms 8.9MB 937ms 0ms cpython 3.13.5
python 1.py 990ms 5.3ms 67.4MB 963ms 13ms pypy 3.10.16
d 1.d 1200ms 1.8ms 3.9MB 1177ms 93ms ldc2 1.41.0
d 1.d 2059ms 9.1ms 6.5MB 2030ms 123ms dmd 2.111.0

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 3599ms 3.4ms 4.0MB 3590ms 0ms ldc2 1.41.0
d 1.d 3649ms 20ms 5.9MB 3640ms 0ms dmd 2.111.0
python 8.py timeout 0.0ms 14.8MB 33ms 10ms cpython 3.13.5
python 8.py timeout 0.0ms 95.9MB 787ms 80ms pypy 3.10.16
python 8.py timeout 0.0ms 14.4MB 33ms 10ms pyston 3.8.12

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 903ms 2.0ms 3.5MB 893ms 0ms ldc2 1.41.0
d 1.d 917ms 3.9ms 5.3MB 907ms 0ms dmd 2.111.0
python 8.py timeout 0.0ms 14.5MB 47ms 13ms cpython 3.13.5
python 8.py timeout 0.0ms 95.6MB 1280ms 180ms pypy 3.10.16
python 8.py timeout 0.0ms 13.6MB 60ms 13ms pyston 3.8.12

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 229ms 1.7ms 3.1MB 220ms 0ms ldc2 1.41.0
d 1.d 233ms 0.2ms 5.0MB 220ms 0ms dmd 2.111.0
python 8-m.py 1948ms 18ms 92.9MB 6303ms 253ms pypy 3.10.16
python 8.py timeout 0.0ms 14.3MB 80ms 20ms cpython 3.13.5
python 8.py timeout 0.0ms 13.1MB 150ms 30ms pyston 3.8.12