Programming Language and compiler
Benchmarks

C VS Python benchmarks

Current benchmark data was generated on Mon Apr 14 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.)

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 1.c 1.1ms 0.1ms 1.3MB 0ms 0ms zigcc 0.14.0
c 1.c 1.2ms 0.1ms 2.1MB 0ms 0ms clang 14.0.0-1ubuntu1.1
c 1.c 1.2ms 0.1ms 2.1MB 0ms 0ms gcc 14.2.0
python 1.py 11ms 0.9ms 7.8MB 0ms 0ms pyston 3.8.12
python 1.py 14ms 1.3ms 8.6MB 10ms 0ms cpython 3.13.3
python 1.py 28ms 0.4ms 51.6MB 10ms 10ms pypy 3.10.16

knucleotide

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 1-m.c 182ms 2.9ms 24.5MB 420ms 7ms gcc 14.2.0
c 1-m.c 291ms 5.0ms 25.9MB 980ms 17ms clang 14.0.0-1ubuntu1.1
python 3-m.py 2479ms 7.2ms 136.3MB 8417ms 323ms pypy 3.10.16
python 3-m.py 3176ms 41ms 34.3MB 12123ms 117ms pyston 3.8.12
python 3.py timeout 0.0ms 35.7MB 93ms 20ms cpython 3.13.3

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 1-m.c 28ms 2.9ms 12.1MB 63ms 0ms gcc 14.2.0
c 1-m.c 35ms 0.6ms 15.1MB 100ms 0ms clang 14.0.0-1ubuntu1.1
python 3-m.py 389ms 2.2ms 75.7MB 997ms 157ms pypy 3.10.16
python 3-m.py 395ms 1.5ms 14.3MB 1307ms 67ms pyston 3.8.12
python 3-m.py 691ms 2.2ms 15.2MB 2443ms 60ms cpython 3.13.3

mandelbrot

Input: 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 1-mffi.c 230ms 12ms 7.4MB 857ms 17ms clang 14.0.0-1ubuntu1.1
c 1-mffi.c 265ms 1.9ms 6.7MB 807ms 0ms gcc 14.2.0
c 1-ffi.c 330ms 1.2ms 5.9MB 320ms 0ms zigcc 0.14.0
c 1-mffi.c 330ms 0.9ms 5.9MB 320ms 0ms zigcc 0.14.0
c 1-ffi.c 452ms 1.5ms 6.4MB 440ms 0ms clang 14.0.0-1ubuntu1.1
c 1-ffi.c 542ms 1.6ms 6.7MB 530ms 0ms gcc 14.2.0

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 1-mffi.c 15ms 0.5ms 4.8MB 30ms 0ms clang 14.0.0-1ubuntu1.1
c 1-ffi.c 16ms 0.1ms 3.0MB 10ms 0ms zigcc 0.14.0
c 1-mffi.c 16ms 0.1ms 3.0MB 10ms 0ms zigcc 0.14.0
c 1-mffi.c 17ms 1.6ms 3.6MB 43ms 0ms gcc 14.2.0
c 1-ffi.c 22ms 0.3ms 3.6MB 10ms 0ms clang 14.0.0-1ubuntu1.1
c 1-ffi.c 26ms 0.9ms 3.6MB 20ms 0ms gcc 14.2.0

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 8-i.c 267ms 0.5ms 1.5MB 260ms 0ms zigcc 0.14.0
c 8-i.c 302ms 1.0ms 2.1MB 290ms 0ms clang 14.0.0-1ubuntu1.1
c 2.c 311ms 0.4ms 2.3MB 300ms 0ms gcc 14.2.0
c 5.c 315ms 0.7ms 2.3MB 303ms 0ms gcc 14.2.0
c 2.c 315ms 1.4ms 1.5MB 310ms 0ms zigcc 0.14.0
c 5.c 315ms 0.9ms 1.5MB 307ms 0ms zigcc 0.14.0
c 5.c 318ms 3.4ms 2.1MB 310ms 0ms clang 14.0.0-1ubuntu1.1
c 2.c 320ms 0.6ms 2.1MB 310ms 0ms clang 14.0.0-1ubuntu1.1
c 8-i.c 334ms 0.4ms 2.3MB 323ms 0ms gcc 14.2.0
python 2.py 1350ms 3.5ms 57.9MB 1327ms 10ms pypy 3.10.16
python 1.py 2654ms 20ms 57.2MB 2627ms 13ms pypy 3.10.16
python 1.py timeout 0.0ms 8.9MB 4990ms 0ms cpython 3.13.3
python 2.py timeout 0.0ms 8.9MB 4990ms 0ms cpython 3.13.3
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
c 8-i.c 29ms 0.2ms 1.5MB 20ms 0ms zigcc 0.14.0
c 8-i.c 33ms 0.4ms 2.1MB 23ms 0ms clang 14.0.0-1ubuntu1.1
c 5.c 34ms 0.3ms 2.3MB 30ms 0ms gcc 14.2.0
c 5.c 34ms 0.5ms 1.5MB 27ms 0ms zigcc 0.14.0
c 2.c 34ms 0.6ms 2.3MB 27ms 0ms gcc 14.2.0
c 2.c 34ms 0.2ms 1.5MB 30ms 0ms zigcc 0.14.0
c 2.c 35ms 0.8ms 2.1MB 30ms 0ms clang 14.0.0-1ubuntu1.1
c 5.c 35ms 0.7ms 2.1MB 30ms 0ms clang 14.0.0-1ubuntu1.1
c 8-i.c 36ms 0.2ms 2.3MB 30ms 0ms gcc 14.2.0
python 2.py 177ms 2.0ms 57.9MB 157ms 10ms pypy 3.10.16
python 1.py 309ms 11ms 57.1MB 287ms 7ms pypy 3.10.16
python 1.py 1009ms 134ms 8.3MB 997ms 0ms pyston 3.8.12
python 2.py 1304ms 5.0ms 8.3MB 1293ms 0ms pyston 3.8.12
python 1.py 2984ms 72ms 8.8MB 2970ms 0ms cpython 3.13.3
python 2.py 3398ms 9.8ms 8.9MB 3387ms 0ms cpython 3.13.3

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 1.c 279ms 1.8ms 40.9MB 263ms 0ms clang 14.0.0-1ubuntu1.1
c 1.c 281ms 2.9ms 40.2MB 263ms 0ms zigcc 0.14.0
c 1.c 301ms 7.8ms 41.0MB 283ms 0ms gcc 14.2.0
python 1.py 2598ms 14ms 369.5MB 2527ms 60ms pypy 3.10.16
python 2.py 3071ms 19ms 633.0MB 2897ms 157ms pyston 3.8.12
python 1.py 4831ms 76ms 320.4MB 4770ms 47ms pyston 3.8.12
python 1.py timeout 0.0ms 321.3MB 4960ms 27ms cpython 3.13.3
python 2.py timeout 0.0ms 633.8MB 4833ms 150ms cpython 3.13.3
python 2.py timeout 0.0ms 959.7MB 4723ms 260ms pypy 3.10.16

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 1.c 52ms 2.6ms 11.8MB 40ms 0ms gcc 14.2.0
c 1.c 53ms 0.9ms 11.5MB 40ms 0ms clang 14.0.0-1ubuntu1.1
c 1.c 59ms 3.0ms 11.0MB 50ms 0ms zigcc 0.14.0
python 1.py 545ms 16ms 135.2MB 510ms 20ms pypy 3.10.16
python 2.py 746ms 6.9ms 164.2MB 707ms 27ms pyston 3.8.12
python 1.py 1093ms 21ms 86.0MB 1070ms 10ms pyston 3.8.12
python 2.py 1471ms 14ms 165.0MB 1430ms 30ms cpython 3.13.3
python 2.py 1569ms 31ms 290.2MB 1480ms 77ms pypy 3.10.16
python 1.py 2775ms 8.1ms 86.9MB 2750ms 10ms cpython 3.13.3

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 6-im.c 963ms 12ms 2.0MB 3780ms 0ms gcc 14.2.0
c 4-m.c 965ms 1.5ms 2.0MB 3797ms 0ms gcc 14.2.0
c 6-im.c 1008ms 5.5ms 3.3MB 3950ms 3ms clang 14.0.0-1ubuntu1.1
c 5-im.c 1088ms 1.2ms 2.0MB 4290ms 0ms gcc 14.2.0
c 4-m.c 1122ms 3.5ms 3.3MB 4407ms 0ms clang 14.0.0-1ubuntu1.1
c 5-im.c 1342ms 23ms 3.3MB 5257ms 0ms clang 14.0.0-1ubuntu1.1
c 3-m.c 1834ms 11ms 3.1MB 7227ms 7ms clang 14.0.0-1ubuntu1.1
c 3-m.c 1969ms 3.6ms 2.0MB 7777ms 0ms gcc 14.2.0
python 8.py timeout 0.0ms 14.8MB 40ms 7ms cpython 3.13.3
python 8.py timeout 0.0ms 96.8MB 803ms 73ms pypy 3.10.16
python 8.py timeout 0.0ms 14.1MB 33ms 10ms pyston 3.8.12

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 6-im.c 247ms 1.3ms 2.0MB 947ms 0ms gcc 14.2.0
c 4-m.c 255ms 2.8ms 2.0MB 973ms 0ms gcc 14.2.0
c 6-im.c 269ms 18ms 3.3MB 1007ms 3ms clang 14.0.0-1ubuntu1.1
c 5-im.c 284ms 3.3ms 2.0MB 1090ms 0ms gcc 14.2.0
c 4-m.c 289ms 1.8ms 3.1MB 1103ms 0ms clang 14.0.0-1ubuntu1.1
c 5-im.c 341ms 1.0ms 3.3MB 1310ms 0ms clang 14.0.0-1ubuntu1.1
c 3-m.c 467ms 6.6ms 3.3MB 1810ms 0ms clang 14.0.0-1ubuntu1.1
c 3-m.c 497ms 0.7ms 2.0MB 1937ms 0ms gcc 14.2.0
python 8.py timeout 0.0ms 14.6MB 50ms 10ms cpython 3.13.3
python 8.py timeout 0.0ms 96.2MB 1303ms 180ms pypy 3.10.16
python 8.py timeout 0.0ms 13.7MB 57ms 20ms pyston 3.8.12

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 6-im.c 69ms 0.2ms 2.0MB 250ms 0ms gcc 14.2.0
c 4-m.c 71ms 0.4ms 2.0MB 253ms 0ms gcc 14.2.0
c 6-im.c 71ms 1.3ms 3.3MB 250ms 0ms clang 14.0.0-1ubuntu1.1
c 4-m.c 78ms 0.9ms 3.1MB 280ms 0ms clang 14.0.0-1ubuntu1.1
c 5-im.c 79ms 1.7ms 2.0MB 283ms 0ms gcc 14.2.0
c 5-im.c 91ms 0.7ms 3.0MB 330ms 0ms clang 14.0.0-1ubuntu1.1
c 3-m.c 122ms 1.0ms 3.3MB 450ms 0ms clang 14.0.0-1ubuntu1.1
c 3-m.c 131ms 0.8ms 2.0MB 490ms 0ms gcc 14.2.0
python 8-m.py 1955ms 10ms 93.2MB 6330ms 253ms pypy 3.10.16
python 8.py timeout 0.0ms 14.3MB 90ms 13ms cpython 3.13.3
python 8.py timeout 0.0ms 13.1MB 127ms 37ms pyston 3.8.12