Programming Language and compiler
Benchmarks

Zig VS C++ benchmarks

Current benchmark data was generated on Sun Jun 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
zig 1.zig 1718ms 14ms 49.0MB 1683ms 20ms zig 0.14.1

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 150ms 2.1ms 7.0MB 140ms 0ms zig 0.14.1

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 2257ms 7.3ms 2.5MB 2230ms 10ms zig 0.14.1

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 384ms 5.4ms 1.9MB 370ms 0ms zig 0.14.1

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 1-im.cpp 396ms 4.5ms 2.5MB 1533ms 0ms g++ 11.4.0
cpp 1-im.cpp 402ms 5.0ms 4.0MB 1557ms 0ms clang++ 14.0.0-1ubuntu1.1
zig 2-m.zig 638ms 2.2ms 1.4MB 2400ms 0ms zig 0.14.1
zig 3-i.zig 1764ms 0.6ms 1.0MB 1753ms 0ms zig 0.14.1
zig 1.zig 2716ms 5.8ms 1.0MB 2707ms 0ms zig 0.14.1

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 1-im.cpp 40ms 0.6ms 4.0MB 130ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 1-im.cpp 40ms 2.9ms 2.5MB 133ms 0ms g++ 11.4.0
zig 2-m.zig 60ms 0.3ms 1.4MB 200ms 0ms zig 0.14.1
zig 3-i.zig 147ms 0.4ms 1.0MB 140ms 0ms zig 0.14.1
zig 1.zig 229ms 0.8ms 1.0MB 220ms 0ms zig 0.14.1

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 87ms 1.4ms 1.0MB 80ms 0ms zig 0.14.1

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 10ms 0.1ms 1.0MB 0ms 0ms zig 0.14.1

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 1.cpp 1.0ms 0.0ms 1.4MB 0ms 0ms g++ 11.4.0
zig 1.zig 1.1ms 0.4ms 1.1MB 0ms 0ms zig 0.14.1
cpp 1.cpp 1.4ms 0.1ms 2.3MB 0ms 0ms clang++ 14.0.0-1ubuntu1.1

knucleotide

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1-m.zig 314ms 1.1ms 66.5MB 827ms 30ms zig 0.14.1
zig 1.zig 500ms 5.4ms 28.0MB 483ms 7ms zig 0.14.1

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1-m.zig 63ms 0.5ms 54.3MB 123ms 33ms zig 0.14.1
zig 1.zig 66ms 1.0ms 15.5MB 50ms 0ms zig 0.14.1

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 35ms 0.8ms 2.8MB 30ms 0ms zig 0.14.1

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 95ms 3.4ms 2.8MB 87ms 0ms zig 0.14.1

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 15ms 0.4ms 1.3MB 10ms 0ms zig 0.14.1

mandelbrot

Input: 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 247ms 0.8ms 4.1MB 240ms 0ms zig 0.14.1

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 12ms 0.2ms 1.1MB 10ms 0ms zig 0.14.1

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 856ms 8.4ms 41.0MB 830ms 10ms zig 0.14.1

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 178ms 3.3ms 11.0MB 167ms 0ms zig 0.14.1

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 0-i.cpp 167ms 0.4ms 1.5MB 160ms 0ms g++ 11.4.0
cpp 0-i.cpp 171ms 0.7ms 2.4MB 160ms 0ms clang++ 14.0.0-1ubuntu1.1
zig 3.zig 198ms 1.0ms 1.0MB 190ms 0ms zig 0.14.1
zig 2.zig 279ms 0.5ms 1.0MB 270ms 0ms zig 0.14.1
cpp 1.cpp 314ms 2.2ms 1.8MB 303ms 0ms g++ 11.4.0
zig 1.zig 315ms 0.7ms 1.1MB 310ms 0ms zig 0.14.1
cpp 1.cpp 318ms 0.4ms 2.3MB 310ms 0ms clang++ 14.0.0-1ubuntu1.1

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 0-i.cpp 18ms 0.0ms 1.5MB 10ms 0ms g++ 11.4.0
cpp 0-i.cpp 19ms 0.1ms 2.3MB 10ms 0ms clang++ 14.0.0-1ubuntu1.1
zig 3.zig 21ms 0.2ms 1.0MB 10ms 0ms zig 0.14.1
zig 2.zig 30ms 0.1ms 1.0MB 20ms 0ms zig 0.14.1
cpp 1.cpp 34ms 0.4ms 1.9MB 30ms 0ms g++ 11.4.0
cpp 1.cpp 34ms 0.1ms 2.3MB 23ms 0ms clang++ 14.0.0-1ubuntu1.1
zig 1.zig 34ms 0.6ms 1.1MB 30ms 0ms zig 0.14.1

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 255ms 8.2ms 40.2MB 240ms 0ms zig 0.14.1
zig 2.zig 328ms 2.8ms 6.0MB 320ms 0ms zig 0.14.1
cpp 1.cpp 485ms 1.3ms 7.3MB 473ms 0ms g++ 11.4.0
cpp 1.cpp 526ms 2.2ms 7.8MB 517ms 0ms clang++ 14.0.0-1ubuntu1.1

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 55ms 1.4ms 10.9MB 43ms 0ms zig 0.14.1
zig 2.zig 81ms 1.1ms 2.3MB 70ms 0ms zig 0.14.1
cpp 1.cpp 120ms 1.4ms 3.6MB 110ms 0ms g++ 11.4.0
cpp 1.cpp 131ms 0.7ms 4.0MB 120ms 0ms clang++ 14.0.0-1ubuntu1.1

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 2458ms 11ms 2.3MB 2430ms 17ms zig 0.14.1

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 565ms 4.7ms 1.8MB 553ms 0ms zig 0.14.1

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 8-m.cpp 469ms 3.7ms 3.5MB 1823ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 8-m.cpp 482ms 1.3ms 2.1MB 1887ms 0ms g++ 11.4.0
cpp 6-im.cpp 917ms 0.3ms 3.4MB 3603ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 6-im.cpp 920ms 1.7ms 2.1MB 3617ms 0ms g++ 11.4.0
zig 1.zig 3684ms 1.8ms 1.4MB 3670ms 0ms zig 0.14.1

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 8-m.cpp 123ms 0.4ms 3.4MB 457ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 8-m.cpp 128ms 0.5ms 2.0MB 480ms 0ms g++ 11.4.0
cpp 6-im.cpp 236ms 0.8ms 3.4MB 900ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 6-im.cpp 238ms 0.2ms 2.1MB 920ms 0ms g++ 11.4.0
zig 1.zig 927ms 2.1ms 1.3MB 920ms 0ms zig 0.14.1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 8-m.cpp 39ms 0.4ms 2.0MB 130ms 0ms g++ 11.4.0
cpp 8-m.cpp 41ms 8.7ms 3.5MB 120ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 6-im.cpp 65ms 1.3ms 3.4MB 230ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 6-im.cpp 66ms 0.2ms 2.0MB 240ms 0ms g++ 11.4.0
zig 1.zig 232ms 0.3ms 1.3MB 220ms 0ms zig 0.14.1