EgorBot for AndyAyersMS in #110258

[EgorBot]

Processing dotnet/runtime#110258 (comment) command:

Command

-intel -arm -profiler --envvars DOTNET_TC_CallCounting:0 DOTNET_TieredPGO_InstrumentOnlyHotCode:0 DOTNET_TieredPGO_ScalableCountThreshold:1E

using BenchmarkDotNet.Attributes;

public class Bench
{
    int a = 0;
    int b = 0;
    int c = 0;
    int d = 0;
    int e = 0;

    [Benchmark]
    public int Test()
    {
        int zeros = 0;
        Parallel.For(0, 1024, i =>
        {
            int zeros = 0;
            int nonzeros = 0;
            if (a == 0)
                zeros++;
            else nonzeros++;
            if (b == 0)
                zeros++;
            else nonzeros++;
            if (c == 0)
                zeros++;
            else nonzeros++;
            if (d == 0)
                zeros++;
            else nonzeros++;
            if (e == 0)
                zeros++;
            else nonzeros++;
        });
        return zeros;
    }
}

(EgorBot will reply in this issue)

[EgorBot]

Benchmark results on linux_azure_cobalt100

BenchmarkDotNet v0.14.0, Ubuntu 24.04.1 LTS (Noble Numbat)
azure_cobalt100
  Job-FUSTSB : .NET 10.0.0 (42.42.42.42424), Arm64 RyuJIT AdvSIMD
  Job-NYCJHX : .NET 10.0.0 (42.42.42.42424), Arm64 RyuJIT AdvSIMD
EnvironmentVariables=DOTNET_TC_CallCounting=0,DOTNET_TieredPGO_InstrumentOnlyHotCode=0,DOTNET_TieredPGO_ScalableCountThreshold=1E

Method	Toolchain	Mean	Error	Ratio
Test	Main	18.80 μs	0.212 μs	1.00
Test	PR	19.21 μs	0.154 μs	1.02

BDN_Artifacts.zip

Profiling for Bench_Test:

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

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

[EgorBot]

Benchmark results on linux_azure_cascadelake

BenchmarkDotNet v0.14.0, Ubuntu 24.04.1 LTS (Noble Numbat)
Intel Xeon Platinum 8370C CPU 2.80GHz, 1 CPU, 8 logical and 4 physical cores
  Job-THGAEU : .NET 10.0.0 (42.42.42.42424), X64 RyuJIT AVX-512F+CD+BW+DQ+VL+VBMI
  Job-CPKMZF : .NET 10.0.0 (42.42.42.42424), X64 RyuJIT AVX-512F+CD+BW+DQ+VL+VBMI
EnvironmentVariables=DOTNET_TC_CallCounting=0,DOTNET_TieredPGO_InstrumentOnlyHotCode=0,DOTNET_TieredPGO_ScalableCountThreshold=1E

Method	Toolchain	Mean	Error	Ratio
Test	Main	26.81 μs	0.105 μs	1.00
Test	PR	22.88 μs	0.079 μs	0.85

BDN_Artifacts.zip

Profiling for Bench_Test:

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

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