quicksort implemented manually same algorithm on same data structures. Conformant are implementations in idiomatic code with same memory layout.
as run on google cloud n1-standard-2 (2 vCPUs, 7.5 GB memory) skylake cpu
| tool | time taken | conforms? | comment |
|---|---|---|---|
| clang 8 | 7.630 sec | + | .. |
| julia-1.2.0 | 7.810 sec | + | .. |
| gcc-8 | 8.244 sec | + | .. |
| rust | 8.272 sec | + | .. |
| ldc-1.8.0/llvm5 | 8.460 sec | + | .. |
| .net core 3.0 unsafe | 8.995 sec | + | .. |
| java-graaalvm-packed | 9.308 sec | this has memory layout like in C, but non-idiomatic coding | |
| .net core 3.0 safe | 9.508 sec | + | .. |
| gcc-go 8 | 10.035 sec | + | .. |
| java-valhalla | 11.094 | + | Java with structs! |
| clang+graalvm | 11.863 sec | + | LLVM bytecode interpreted by graalvm |
| fbc-1.07.1 | 13.230 sec | + | Free Basic, credits to @mabu |
| fpc-3.0.4 | 13.592 sec | + | Free Pascal |
as run on my notebook; single user mode; single thread always caused 4-4.1 GHz.
| tool | time taken | conforms? | comment |
|---|---|---|---|
| julia-1.1.1 | 4.75 sec | + | .. |
| clang 8 | 4.81 sec | + | .. |
| gcc-9 | 4.93 sec | + | .. |
| rust | 5.08 sec | + | .. |
| ldc-llvm8 | 5.16 sec | + | LLVM backend for D |
| .net core 2.2 unsafe | 5.30 sec | + | .. |
| gcc-go 9.1.0 | 5.52 sec | + | .. |
| java-graaalvm-packed | 5.62 sec | this has memory layout like in C, but non-idiomatic coding | |
| .net core 2.2 | 5.65 sec | + | compiled release mode, no mono |
| swift-5.0.2 | 5.76 sec | + | .. |
| go1.12.6 | gccgo+10% | + | ..uninstalled it already due to conflict with gccgo |
| dmd-2.087 | 6.61 sec | + | canonical D |
| clang+graalvm | 6.97 sec | + | LLVM bytecode interpreted by graalvm |
| fpc-3.0.4 | 8.34 sec | + | Free Pascal |
| java-graaalvm-onheap | 14.4 sec | this has different memory layout, but idiomatic approach |