Programming Language and compiler
Benchmarks

Zig VS C++ 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
zig 1.zig 2079ms 56ms 49.0MB 2047ms 17ms zig 0.14.1

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 152ms 1.7ms 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 2256ms 12ms 2.5MB 2227ms 17ms zig 0.14.1

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 380ms 2.7ms 1.9MB 363ms 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 395ms 6.0ms 2.5MB 1533ms 0ms g++ 11.4.0
cpp 1-im.cpp 397ms 1.4ms 4.0MB 1540ms 0ms clang++ 14.0.0-1ubuntu1.1
zig 2-m.zig 634ms 3.4ms 1.4MB 2393ms 0ms zig 0.14.1
zig 3-i.zig 1791ms 48ms 1.0MB 1780ms 0ms zig 0.14.1
zig 1.zig 2728ms 20ms 1.0MB 2720ms 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 133ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 1-im.cpp 41ms 1.8ms 2.6MB 137ms 0ms g++ 11.4.0
zig 2-m.zig 60ms 0.4ms 1.4MB 200ms 0ms zig 0.14.1
zig 3-i.zig 147ms 0.3ms 1.0MB 140ms 0ms zig 0.14.1
zig 1.zig 228ms 1.0ms 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 88ms 0.6ms 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
zig 1.zig 0.9ms 0.0ms 1.1MB 0ms 0ms zig 0.14.1
cpp 1.cpp 1.0ms 0.1ms 1.4MB 0ms 0ms g++ 11.4.0
cpp 1.cpp 1.3ms 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 321ms 1.7ms 67.1MB 853ms 20ms zig 0.14.1
zig 1.zig 504ms 4.0ms 27.9MB 480ms 13ms 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 65ms 0.5ms 54.4MB 127ms 37ms zig 0.14.1
zig 1.zig 67ms 2.4ms 15.4MB 50ms 3ms 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 36ms 0.2ms 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 90ms 0.4ms 2.8MB 80ms 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 14ms 0.1ms 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 249ms 1.1ms 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 0.3ms 1.1MB 0ms 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 877ms 11ms 41.0MB 850ms 13ms zig 0.14.1

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 178ms 3.0ms 11.0MB 163ms 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 0.3ms 1.5MB 160ms 0ms g++ 11.4.0
cpp 0-i.cpp 171ms 0.3ms 2.3MB 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 0.3ms 1.0MB 270ms 0ms zig 0.14.1
cpp 1.cpp 314ms 1.2ms 1.8MB 307ms 0ms g++ 11.4.0
cpp 1.cpp 315ms 0.6ms 2.3MB 310ms 0ms clang++ 14.0.0-1ubuntu1.1
zig 1.zig 315ms 1.5ms 1.1MB 307ms 0ms zig 0.14.1

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 0-i.cpp 18ms 0.1ms 1.5MB 10ms 0ms g++ 11.4.0
cpp 0-i.cpp 19ms 0.2ms 2.3MB 10ms 0ms clang++ 14.0.0-1ubuntu1.1
zig 3.zig 22ms 0.1ms 1.0MB 10ms 0ms zig 0.14.1
zig 2.zig 30ms 0.0ms 1.0MB 20ms 0ms zig 0.14.1
zig 1.zig 33ms 0.1ms 1.1MB 30ms 0ms zig 0.14.1
cpp 1.cpp 34ms 0.4ms 1.9MB 30ms 0ms g++ 11.4.0
cpp 1.cpp 34ms 0.6ms 2.3MB 30ms 0ms clang++ 14.0.0-1ubuntu1.1

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 274ms 3.8ms 40.2MB 257ms 0ms zig 0.14.1
zig 2.zig 325ms 2.5ms 6.0MB 313ms 0ms zig 0.14.1
cpp 1.cpp 488ms 2.4ms 7.2MB 480ms 0ms g++ 11.4.0
cpp 1.cpp 530ms 1.9ms 7.7MB 520ms 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 50ms 2.9ms 10.9MB 40ms 0ms zig 0.14.1
zig 2.zig 81ms 0.8ms 2.3MB 70ms 0ms zig 0.14.1
cpp 1.cpp 121ms 1.6ms 3.6MB 110ms 0ms g++ 11.4.0
cpp 1.cpp 133ms 0.4ms 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 2453ms 3.5ms 2.2MB 2427ms 17ms zig 0.14.1

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 564ms 2.2ms 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 467ms 0.8ms 3.4MB 1817ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 8-m.cpp 482ms 0.4ms 2.1MB 1880ms 0ms g++ 11.4.0
cpp 6-im.cpp 918ms 0.6ms 3.4MB 3613ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 6-im.cpp 921ms 1.9ms 2.1MB 3627ms 0ms g++ 11.4.0
zig 1.zig 3691ms 6.4ms 1.4MB 3683ms 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 125ms 2.9ms 3.4MB 463ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 8-m.cpp 129ms 0.3ms 2.0MB 480ms 0ms g++ 11.4.0
cpp 6-im.cpp 240ms 2.4ms 2.0MB 913ms 0ms g++ 11.4.0
cpp 6-im.cpp 248ms 20ms 3.4MB 927ms 0ms clang++ 14.0.0-1ubuntu1.1
zig 1.zig 925ms 2.3ms 1.3MB 913ms 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 0.6ms 2.0MB 130ms 0ms g++ 11.4.0
cpp 8-m.cpp 40ms 7.9ms 3.5MB 117ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 6-im.cpp 64ms 0.4ms 3.4MB 223ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 6-im.cpp 69ms 3.9ms 2.3MB 247ms 0ms g++ 11.4.0
zig 1.zig 233ms 1.3ms 1.3MB 223ms 0ms zig 0.14.1