Programming Language and compiler
Benchmarks

Results for 38 of 40 languages from this run on actest1.

Unavailable in this run: Hack, Lisp. Follow the run link for failure details.

C++ VS Zig benchmarks

Current benchmark data was generated on Sun Sep 27 2026, full log can be found HERE

CONTRIBUTIONS are WELCOME!

[x86_64][4 cores] Intel(R) Core(TM) i7-3687U CPU @ 2.10GHz (Model 58)

* -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.)

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 1-im.cpp 345ms 20ms 1.3MB 1217ms 0ms g++ 13.3.0
cpp 1-im.cpp 388ms 14ms 6.1MB 1353ms 7ms clang++ 18.1.3
zig 2-m.zig 833ms 6.5ms 1.5MB 3140ms 0ms zig 0.14.1
zig 3-i.zig 1413ms 43ms 1.1MB 1400ms 0ms zig 0.14.1
zig 1.zig 2763ms 12ms 1.1MB 2753ms 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 35ms 2.1ms 1.3MB 103ms 0ms g++ 13.3.0
cpp 1-im.cpp 42ms 3.1ms 6.1MB 120ms 3ms clang++ 18.1.3
zig 2-m.zig 77ms 2.6ms 1.5MB 243ms 0ms zig 0.14.1
zig 3-i.zig 124ms 4.7ms 1.1MB 113ms 0ms zig 0.14.1
zig 1.zig 239ms 3.8ms 1.1MB 227ms 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 1.1ms 0.2ms 1.5MB 0ms 0ms g++ 13.3.0
zig 1.zig 1.3ms 0.5ms 1.1MB 0ms 0ms zig 0.14.1
cpp 1.cpp 1.7ms 0.3ms 1.5MB 0ms 0ms clang++ 18.1.3

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 0-i.cpp 219ms 0.7ms 1.0MB 210ms 0ms g++ 13.3.0
cpp 0-i.cpp 225ms 20ms 1.6MB 217ms 0ms clang++ 18.1.3
zig 3.zig 379ms 3.1ms 1.1MB 370ms 0ms zig 0.14.1
cpp 1.cpp 387ms 4.1ms 1.6MB 377ms 0ms clang++ 18.1.3
zig 2.zig 470ms 2.9ms 1.1MB 457ms 0ms zig 0.14.1
zig 1.zig 510ms 3.2ms 1.1MB 500ms 0ms zig 0.14.1
cpp 1.cpp 734ms 2.2ms 1.1MB 723ms 0ms g++ 13.3.0

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 0-i.cpp 24ms 1.0ms 1.6MB 13ms 0ms clang++ 18.1.3
cpp 0-i.cpp 24ms 0.2ms 1.1MB 10ms 0ms g++ 13.3.0
cpp 1.cpp 42ms 0.7ms 1.5MB 30ms 0ms clang++ 18.1.3
zig 3.zig 42ms 3.2ms 1.1MB 33ms 0ms zig 0.14.1
zig 2.zig 50ms 2.1ms 1.1MB 40ms 0ms zig 0.14.1
zig 1.zig 56ms 2.3ms 1.1MB 47ms 0ms zig 0.14.1
cpp 1.cpp 77ms 0.2ms 1.1MB 70ms 0ms g++ 13.3.0

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 2.zig 552ms 15ms 6.0MB 543ms 0ms zig 0.14.1
cpp 1.cpp 796ms 7.4ms 7.5MB 780ms 0ms clang++ 18.1.3
cpp 1.cpp 847ms 19ms 7.1MB 833ms 0ms g++ 13.3.0
zig 1.zig 958ms 9.6ms 40.1MB 940ms 0ms zig 0.14.1

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 2.zig 107ms 1.3ms 2.2MB 100ms 0ms zig 0.14.1
cpp 1.cpp 160ms 1.7ms 4.1MB 150ms 0ms clang++ 18.1.3
zig 1.zig 170ms 4.1ms 11.0MB 160ms 0ms zig 0.14.1
cpp 1.cpp 171ms 8.0ms 3.6MB 160ms 0ms g++ 13.3.0

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 6-im.cpp 2915ms 1.5ms 5.5MB 11537ms 7ms clang++ 18.1.3
cpp 6-im.cpp 2917ms 0.5ms 2.4MB 11547ms 3ms g++ 13.3.0
cpp 8-m.cpp 2934ms 0.7ms 3.3MB 11603ms 3ms clang++ 18.1.3
cpp 8-m.cpp 2973ms 15ms 2.4MB 11770ms 3ms g++ 13.3.0
zig 1.zig 11057ms 6.2ms 1.1MB 11043ms 0ms zig 0.14.1

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 6-im.cpp 734ms 0.8ms 1.4MB 2880ms 0ms g++ 13.3.0
cpp 8-m.cpp 741ms 3.9ms 3.3MB 2880ms 3ms clang++ 18.1.3
cpp 8-m.cpp 748ms 5.3ms 1.4MB 2943ms 0ms g++ 13.3.0
cpp 6-im.cpp 748ms 21ms 3.4MB 2880ms 7ms clang++ 18.1.3
zig 1.zig 2773ms 1.4ms 1.1MB 2757ms 0ms zig 0.14.1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 6-im.cpp 189ms 0.5ms 1.4MB 713ms 0ms g++ 13.3.0
cpp 8-m.cpp 192ms 2.2ms 1.4MB 723ms 0ms g++ 13.3.0
cpp 8-m.cpp 197ms 5.8ms 3.4MB 717ms 0ms clang++ 18.1.3
cpp 6-im.cpp 198ms 15ms 5.4MB 723ms 3ms clang++ 18.1.3
zig 1.zig 697ms 1.0ms 1.1MB 690ms 0ms zig 0.14.1