EgorBot for AaronRobinsonMSFT in #109996

[EgorBot]

Processing dotnet/runtime#109996 (comment) command:

Command

-x64 -arm64 -profiler

using BenchmarkDotNet.Attributes;
using BenchmarkDotNet.Running;

public class Bench
{
    struct S;

    [Benchmark]
    public Type RefElementType() => typeof(Bench[]).GetElementType();

    [Benchmark]
    public Type ValueElementType() => typeof(S[]).GetElementType();
}

(EgorBot will reply in this issue)

[EgorBot]

Benchmark results on linux_icelake

BenchmarkDotNet v0.14.0, Ubuntu 22.04.5 LTS (Jammy Jellyfish)
Intel Xeon Platinum 8370C CPU 2.80GHz, 1 CPU, 8 logical and 4 physical cores
  Job-VAVINC : .NET 10.0.0 (42.42.42.42424), X64 RyuJIT AVX-512F+CD+BW+DQ+VL+VBMI
  Job-XDXIJQ : .NET 10.0.0 (42.42.42.42424), X64 RyuJIT AVX-512F+CD+BW+DQ+VL+VBMI

Method	Toolchain	Mean	Error	Ratio
RefElementType	Main	2.892 ns	0.0062 ns	1.00
RefElementType	PR	4.606 ns	0.0010 ns	1.59
ValueElementType	Main	3.175 ns	0.0043 ns	1.00
ValueElementType	PR	2.852 ns	0.0010 ns	0.90

BDN_Artifacts.zip

Profile for Bench_ValueElementType:

Flame graphs: Main vs PR 🔥
Speedscope: Main vs PR
Hot asm: Main vs PR
Hot functions: Main vs PR
Counters: Main vs PR

Profile for Bench_RefElementType:

Flame graphs: Main vs PR 🔥
Speedscope: Main vs PR
Hot asm: Main vs PR
Hot functions: Main vs PR
Counters: Main vs PR

cc @AaronRobinsonMSFT (agent_logs.txt)

[EgorBo]

Hm.. interesting, arm64 job failed while it was building the runtime (during prejitting the corelib):

  Generating native image of System.Private.CoreLib for linux.arm64.Release. Logging to
  /home/egorbot/runtime/dotnet.sh /home/egorbot/runtime/artifacts/bin/coreclr/linux.arm64.Release/arm64/crossgen2/crossgen2.dll -o:/home/egorbot/runtime/artifacts/bin/coreclr/linux.arm64.Release/System.Private.CoreLib.dll -r:/home/egorbot/runtime/artifacts/bin/coreclr/linux.arm64.Release/IL/*.dll --targetarch:arm64 --targetos:linux -m:/home/egorbot/runtime/artifacts/bin/coreclr/linux.arm64.Release/StandardOptimizationData.mibc --embed-pgo-data -O /home/egorbot/runtime/artifacts/bin/coreclr/linux.arm64.Release/IL/System.Private.CoreLib.dll --perfmap-format-version:1 --perfmap --perfmap-path:/home/egorbot/runtime/artifacts/bin/coreclr/linux.arm64.Release/
EXEC : error : Value cannot be null. (Parameter 'array') [/home/egorbot/runtime/src/coreclr/crossgen-corelib.proj]
  System.ArgumentNullException: Value cannot be null. (Parameter 'array')
     at System.Array.Clear(Array array, Int32 index, Int32 length)
     at Internal.JitInterface.CorInfoImpl.CompileMethodCleanup() in /home/egorbot/runtime/src/coreclr/tools/Common/JitInterface/CorInfoImpl.cs:line 700
     at Internal.JitInterface.CorInfoImpl.CompileMethod(MethodWithGCInfo methodCodeNodeNeedingCode, Logger logger) in /home/egorbot/runtime/src/coreclr/tools/aot/ILCompiler.ReadyToRun/JitInterface/CorInfoImpl.ReadyToRun.cs:line 826

[EgorBot]

Benchmark results on linux_arm64

BenchmarkDotNet v0.14.0, Ubuntu 24.04 LTS (Noble Numbat)
arm64
  Job-MZJMEU : .NET 10.0.0 (42.42.42.42424), Arm64 RyuJIT AdvSIMD
  Job-WMZSCV : .NET 10.0.0 (42.42.42.42424), Arm64 RyuJIT AdvSIMD

Method	Toolchain	Mean	Error	Ratio
RefElementType	Main	3.632 ns	0.0023 ns	1.00
RefElementType	PR	2.887 ns	0.0008 ns	0.79
ValueElementType	Main	3.699 ns	0.0005 ns	1.00
ValueElementType	PR	2.886 ns	0.0005 ns	0.78

BDN_Artifacts.zip

Profile for Bench_ValueElementType:

Flame graphs: Main vs PR 🔥
Speedscope: Main vs PR
Hot asm: Main vs PR
Hot functions: Main vs PR
Counters: Main vs PR

Profile for Bench_RefElementType:

Flame graphs: Main vs PR 🔥
Speedscope: Main vs PR
Hot asm: Main vs PR
Hot functions: Main vs PR
Counters: Main vs PR

cc @EgorBo (agent_logs.txt)