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authorIndrajith K L2022-12-03 17:00:20 +0530
committerIndrajith K L2022-12-03 17:00:20 +0530
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+# 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 |