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diff --git a/v_windows/v/old/vlib/sync/bench/results.md b/v_windows/v/old/vlib/sync/bench/results.md new file mode 100644 index 0000000..882471c --- /dev/null +++ b/v_windows/v/old/vlib/sync/bench/results.md @@ -0,0 +1,48 @@ +# Channel Benchmark Results + +This documents lists several benchmark results for different platforms in order to +identify performance regressions and improvements. + +The are measured using the command + +``` +> channel_bench_* <nsend> <nrec> <buflen> <nobj> + +nsend ... number of threads that push objects into the channel +nrec .... number of threads that pop objects from the channel +buflen .. length of channel buffer queue - `0` means unbuffered channel +nobj .... number of objects to pass thru the channel +``` + +## AMD Ryzen 7 3800X, Ubuntu-20.04 x86_64 + +10000000 Objects transfered, results in Objects/µs + +| nsend | nrec | buflen | **V (gcc -O2)** | **V (clang)** | **V (tcc)** | **Go (golang)** | **Go (gccgo -O2)** | +| :---: | :---:| :---: | :---: | :---: | :---: | :---: | :---: | +| 1 | 1 | 0 | 1.97 | 1.63 | 2.08 | 4.65 | 0.56 | +| 1 | 1 | 100 | 3.05 | 2.29 | 1.93 | 18.90 | 6.08 | +| 4 | 4 | 0 | 0.87 | 0.90 | 0.99 | 1.84 | 0.84 | +| 4 | 4 | 100 | 3.35 | 3.07 | 2.92 | 7.43 | 3.71 | + +## AMD Ryzen 7 3800X, Windows 10 2004 x64 + +| nsend | nrec | buflen | **V (gcc -O2)** | **V (msvc /O2)** | **V (tcc)** | **Go (golang)** | +| :---: | :---:| :---: | :---: | :---: | :---: | :---: | +| 1 | 1 | 0 | 2.30 | 3.76 | 2.02 | 4.67 | +| 1 | 1 | 100 | 2.96 | 3.12 | 2.26 | 23.31 | +| 4 | 4 | 0 | 0.90 | 1.05 | 0.83 | 1.38 | +| 4 | 4 | 100 | 2.28 | 2.16 | 2.43 | 4.63 | + +## Raspberry Pi 3B+, Void Linux musl 32 bit + +10000000 Objects transfered, results in Objects/µs + +| nsend | nrec | buflen | **V (gcc -O2)** | **Go (golang)** | +| :---: | :---:| :---: | :---: | :---: | +| 1 | 1 | 0 | 0.37 | 0.21 | +| 1 | 1 | 100 | 1.03 | 0.74 | +| 4 | 4 | 0 | 0.04 | 0.38 | +| 4 | 4 | 100 | 2.78 | 2.63 | +| 2 | 2 | 0 | 0.05 | 0.38 | +| 2 | 2 | 100 | 1.26 | 0.75 | |