Tests

[EgorBo]

[EgorBo]

@EgorBot -amd -arm -aws_amd -profiler -pr 112019

using BenchmarkDotNet.Attributes;

public class Bench
{
    byte[] _arr1 = new byte[200];
    byte[] _arr2 = new byte[200];

    [Benchmark]
    [Arguments(128)]
    public void Copy(int elems)
    {
        Span<byte> span1 = _arr1;
        Span<byte> span2 = _arr2;

        for (int i = 0; i < elems; i++)
            span1[i] = span2[i];
    }
}

[EgorBot]

Benchmark results on linux_aws_genoa

BenchmarkDotNet v0.14.0, Ubuntu 24.04 LTS (Noble Numbat)
AMD EPYC 9R14, 1 CPU, 16 logical and 16 physical cores
  Job-JNUFYT : .NET 10.0.0 (42.42.42.42424), X64 RyuJIT AVX-512F+CD+BW+DQ+VL+VBMI
  Job-MTZYSN : .NET 10.0.0 (42.42.42.42424), X64 RyuJIT AVX-512F+CD+BW+DQ+VL+VBMI
RatioSD=0.02

Method	Toolchain	elems	Mean	Error	Ratio
Copy	Main	128	55.03 ns	0.816 ns	1.00
Copy	PR	128	53.93 ns	0.464 ns	0.98

BDN_Artifacts.zip

Profiling for Bench_Copy:

SVG flamegraph: Main vs PR 🔥
Speedscope flamegraph: Main vs PR
Hot asm code: Main vs PR
HW counters: Main vs PR

cc @EgorBo (agent_logs.txt). EgorBot manual: link.

[EgorBot]

Benchmark results on linux_azure_genoa

BenchmarkDotNet v0.14.0, Ubuntu 24.04.2 LTS (Noble Numbat)
AMD EPYC 9V74, 1 CPU, 16 logical and 8 physical cores
  Job-XMUBZN : .NET 10.0.0 (42.42.42.42424), X64 RyuJIT AVX-512F+CD+BW+DQ+VL+VBMI
  Job-JMNEJT : .NET 10.0.0 (42.42.42.42424), X64 RyuJIT AVX-512F+CD+BW+DQ+VL+VBMI

Method	Toolchain	elems	Mean	Error	Ratio
Copy	Main	128	52.88 ns	0.036 ns	1.00
Copy	PR	128	52.85 ns	0.018 ns	1.00

BDN_Artifacts.zip

Profiling for Bench_Copy:

SVG flamegraph: Main vs PR 🔥
Speedscope flamegraph: Main vs PR
Hot asm code: Main vs PR
HW counters: Main vs PR

cc @EgorBo (agent_logs.txt). EgorBot manual: link.

[EgorBot]

Benchmark results on linux_azure_cobalt100

BenchmarkDotNet v0.14.0, Ubuntu 24.04.2 LTS (Noble Numbat)
azure_cobalt100
  Job-GAKYCZ : .NET 10.0.0 (42.42.42.42424), Arm64 RyuJIT AdvSIMD
  Job-SYHLWE : .NET 10.0.0 (42.42.42.42424), Arm64 RyuJIT AdvSIMD

Method	Toolchain	elems	Mean	Error	Ratio
Copy	Main	128	61.50 ns	0.073 ns	1.00
Copy	PR	128	61.48 ns	0.067 ns	1.00

BDN_Artifacts.zip

Profiling for Bench_Copy:

SVG flamegraph: Main vs PR 🔥
Speedscope flamegraph: Main vs PR
Hot asm code: Main vs PR
HW counters: Main vs PR

cc @EgorBo (agent_logs.txt). EgorBot manual: link.

[EgorBo]

@EgorBot -amd -arm -aws_amd -profiler -pr 113575

using BenchmarkDotNet.Attributes;

public class Bench
{
    byte[] _arr1 = new byte[200];
    byte[] _arr2 = new byte[200];

    [Benchmark]
    [Arguments(128)]
    public void Copy(int elems)
    {
        Span<byte> span1 = _arr1;
        Span<byte> span2 = _arr2;

        for (int i = 0; i < elems; i++)
            span1[i] = span2[i];
    }
}

[EgorBot]

Benchmark results on linux_aws_genoa

BenchmarkDotNet v0.14.0, Ubuntu 24.04 LTS (Noble Numbat)
AMD EPYC 9R14, 1 CPU, 16 logical and 16 physical cores
  Job-PKTRPE : .NET 10.0.0 (42.42.42.42424), X64 RyuJIT AVX-512F+CD+BW+DQ+VL+VBMI
  Job-AIVLWN : .NET 10.0.0 (42.42.42.42424), X64 RyuJIT AVX-512F+CD+BW+DQ+VL+VBMI

Method	Toolchain	elems	Mean	Error	Ratio
Copy	Main	128	52.57 ns	0.039 ns	1.00
Copy	PR	128	36.12 ns	0.026 ns	0.69

BDN_Artifacts.zip

Profiling for Bench_Copy:

SVG flamegraph: Main vs PR 🔥
Speedscope flamegraph: Main vs PR
Hot asm code: Main vs PR
HW counters: Main vs PR

cc @EgorBo (agent_logs.txt). EgorBot manual: link.

[EgorBot]

Benchmark results on linux_azure_genoa

BenchmarkDotNet v0.14.0, Ubuntu 24.04.2 LTS (Noble Numbat)
AMD EPYC 9V74, 1 CPU, 16 logical and 8 physical cores
  Job-GWDPRX : .NET 10.0.0 (42.42.42.42424), X64 RyuJIT AVX-512F+CD+BW+DQ+VL+VBMI
  Job-TGSKBE : .NET 10.0.0 (42.42.42.42424), X64 RyuJIT AVX-512F+CD+BW+DQ+VL+VBMI

Method	Toolchain	elems	Mean	Error	Ratio
Copy	Main	128	52.86 ns	0.013 ns	1.00
Copy	PR	128	36.32 ns	0.004 ns	0.69

BDN_Artifacts.zip

Profiling for Bench_Copy:

SVG flamegraph: Main vs PR 🔥
Speedscope flamegraph: Main vs PR
Hot asm code: Main vs PR
HW counters: Main vs PR

cc @EgorBo (agent_logs.txt). EgorBot manual: link.

[EgorBot]

Benchmark results on linux_azure_cobalt100

BenchmarkDotNet v0.14.0, Ubuntu 24.04.2 LTS (Noble Numbat)
azure_cobalt100
  Job-PQGOTZ : .NET 10.0.0 (42.42.42.42424), Arm64 RyuJIT AdvSIMD
  Job-AKFKZS : .NET 10.0.0 (42.42.42.42424), Arm64 RyuJIT AdvSIMD

Method	Toolchain	elems	Mean	Error	Ratio
Copy	Main	128	61.43 ns	0.062 ns	1.00
Copy	PR	128	45.25 ns	0.028 ns	0.74

BDN_Artifacts.zip

Profiling for Bench_Copy:

SVG flamegraph: Main vs PR 🔥
Speedscope flamegraph: Main vs PR
Hot asm code: Main vs PR
HW counters: Main vs PR

cc @EgorBo (agent_logs.txt). EgorBot manual: link.

[EgorBo]

@EgorBot -intel -pr 113715

using System;
using System.Threading;

using BenchmarkDotNet.Attributes;

public class Bench
{
    static Bench()
    {
        Thread t = new Thread(Copier);
        t.IsBackground = true;
        t.Start();
    }

    static void Copier()
    {
        Span<object> a = new object[10_000_000];
        for (;;) a.Slice(1).CopyTo(a);
    }

    public Bench()
    {
    }

    [Benchmark]
    public void ThreadSuspension()
    {
        GC.Collect();
        Thread.Sleep(1);
    }
}

[EgorBot]

❌ Failed on AzureCascadeLake: Job failed, see logs.

cc @EgorBo (logs). EgorBot manual: link.