Benchmarks for dotnet/runtime#126845 (for @adamsitnik)

[EgorBot]

Processing benchmark request from PR dotnet/runtime#126845.

Targets: windows_azure_turin, windows_azure_cobalt100
Commits: main;PR_126845

• windows_azure_turin: live logs
• windows_azure_cobalt100: live logs

Results will be posted here once they are ready.

[EgorBot]

Results for windows_azure_turin

@adamsitnik

BenchmarkDotNet v0.16.0-nightly.20260320.467, Windows 11 (10.0.26100.32522/24H2/2024Update/HudsonValley) (Hyper-V)
AMD EPYC 9V45 2.60GHz, 1 CPU, 8 logical and 4 physical cores
Memory: 31.99 GB Total, 24.74 GB Available
.NET SDK 10.0.100-rc.2.25502.107
  [Host]     : .NET 10.0.0 (10.0.0-rc.2.25502.107, 10.0.25.50307), X64 RyuJIT x86-64-v4

EvaluateOverhead=False  PowerPlanMode=  IterationTime=250ms  
MaxIterationCount=20  MinIterationCount=15  WarmupCount=1  

Method	Toolchain	Mean	Error	Ratio	Allocated	Alloc Ratio
ReadOutputToEndAsync	main	62.07 ms	1.588 ms	1.00	630.01 KB	1.00
ReadOutputToEndAsync	PR #126845	61.93 ms	1.334 ms	1.00	629.87 KB	1.00
ReadOutputToEnd	main	62.47 ms	1.341 ms	1.03	261.23 KB	1.82
ReadOutputToEnd	PR #126845	60.92 ms	1.213 ms	1.00	143.92 KB	1.00

---

BenchmarkDotNet v0.16.0-nightly.20260320.467, Windows 11 (10.0.26100.32522/24H2/2024Update/HudsonValley) (Hyper-V)
AMD EPYC 9V45 2.60GHz, 1 CPU, 8 logical and 4 physical cores
Memory: 31.99 GB Total, 24.74 GB Available
.NET SDK 10.0.100-rc.2.25502.107
  [Host]     : .NET 10.0.0 (10.0.0-rc.2.25502.107, 10.0.25.50307), X64 RyuJIT x86-64-v4

EvaluateOverhead=False  PowerPlanMode=  IterationTime=250ms  
MaxIterationCount=20  MinIterationCount=15  WarmupCount=1  

Method	Toolchain	fileSize	userBufferSize	options	Mean	Error	Ratio	Gen0	Allocated	Alloc Ratio
Read	main**	1024	1024	Asynchronous	29.49 μs	0.746 μs	1.19	0.2345	4.47 KB	1.03
Read	PR #126845	1024	1024	Asynchronous	24.78 μs	0.320 μs	1.00	0.1984	4.35 KB	1.00
Write	main	1024	1024	Asynchronous	243.65 μs	6.988 μs	1.05	-	4.47 KB	1.03
Write	PR #126845	1024	1024	Asynchronous	232.17 μs	4.715 μs	1.00	-	4.35 KB	1.00
Read	main**	1048576	512	Asynchronous	1,407.41 μs	34.138 μs	1.55	-	48.3 KB	2.64
Read	PR #126845	1048576	512	Asynchronous	908.60 μs	11.665 μs	1.00	-	18.3 KB	1.00
Write	main	1048576	512	Asynchronous	3,599.92 μs	103.666 μs	1.13	-	48.3 KB	2.64
Write	PR #126845	1048576	512	Asynchronous	3,182.80 μs	86.735 μs	1.00	-	18.3 KB	1.00
Read	main**	1048576	4096	Asynchronous	1,284.86 μs	62.102 μs	1.47	-	44.28 KB	3.10
Read	PR #126845	1048576	4096	Asynchronous	874.80 μs	16.963 μs	1.00	-	14.28 KB	1.00
Write	main	1048576	4096	Asynchronous	3,525.65 μs	179.583 μs	1.18	-	44.28 KB	3.10
Write	PR #126845	1048576	4096	Asynchronous	2,980.48 μs	38.523 μs	1.00	-	14.28 KB	1.00
Read	main**	104857600	4096	Asynchronous	136,669.79 μs	2,965.390 μs	1.23	-	4400.49 KB	3.14
Read	PR #126845	104857600	4096	Asynchronous	111,317.32 μs	1,139.201 μs	1.00	-	1400.49 KB	1.00
Write	main	104857600	4096	Asynchronous	218,531.18 μs	16,886.798 μs	1.28	-	4400.71 KB	3.14
Write	PR #126845	104857600	4096	Asynchronous	172,695.56 μs	17,172.349 μs	1.00	-	1400.49 KB	1.00

[EgorBot]

Results for windows_azure_cobalt100

@adamsitnik

BenchmarkDotNet v0.16.0-nightly.20260320.467, Windows 11 (10.0.26200.8037/25H2/2025Update/HudsonValley2) (Hyper-V)
Cobalt 100 3.40GHz, 1 CPU, 8 logical and 8 physical cores
Memory: 31.99 GB Total, 24.23 GB Available
.NET SDK 10.0.100-rc.2.25502.107
  [Host]     : .NET 10.0.0 (10.0.0-rc.2.25502.107, 10.0.25.50307), Arm64 RyuJIT armv8.0-a

EvaluateOverhead=False  PowerPlanMode=  IterationTime=250ms  
MaxIterationCount=20  MinIterationCount=15  WarmupCount=1  

Method	Toolchain	Mean	Error	Ratio	Allocated	Alloc Ratio
ReadOutputToEndAsync	main	55.69 ms	0.460 ms	0.99	606.42 KB	0.99
ReadOutputToEndAsync	PR #126845	56.42 ms	0.948 ms	1.00	614.37 KB	1.00
ReadOutputToEnd	main	57.22 ms	0.503 ms	1.16	261.23 KB	1.82
ReadOutputToEnd	PR #126845	49.21 ms	0.524 ms	1.00	143.87 KB	1.00

---

BenchmarkDotNet v0.16.0-nightly.20260320.467, Windows 11 (10.0.26200.8037/25H2/2025Update/HudsonValley2) (Hyper-V)
Cobalt 100 3.40GHz, 1 CPU, 8 logical and 8 physical cores
Memory: 31.99 GB Total, 24.23 GB Available
.NET SDK 10.0.100-rc.2.25502.107
  [Host]     : .NET 10.0.0 (10.0.0-rc.2.25502.107, 10.0.25.50307), Arm64 RyuJIT armv8.0-a

EvaluateOverhead=False  PowerPlanMode=  IterationTime=250ms  
MaxIterationCount=20  MinIterationCount=15  WarmupCount=1  

Method	Toolchain	fileSize	userBufferSize	options	Mean	Error	Ratio	Allocated	Alloc Ratio
Read	main**	1024	1024	Asynchronous	132.8 μs	2.91 μs	0.86	4.47 KB	1.03
Read	PR #126845	1024	1024	Asynchronous	154.8 μs	9.87 μs	1.00	4.35 KB	1.00
Write	main	1024	1024	Asynchronous	225.2 μs	5.23 μs	1.00	4.47 KB	1.03
Write	PR #126845	1024	1024	Asynchronous	226.4 μs	7.35 μs	1.00	4.35 KB	1.00
Read	main**	1048576	512	Asynchronous	2,881.2 μs	20.33 μs	1.43	48.3 KB	2.64
Read	PR #126845	1048576	512	Asynchronous	2,010.5 μs	20.94 μs	1.00	18.3 KB	1.00
Write	main	1048576	512	Asynchronous	3,712.9 μs	71.12 μs	1.40	48.3 KB	2.64
Write	PR #126845	1048576	512	Asynchronous	2,650.4 μs	18.07 μs	1.00	18.3 KB	1.00
Read	main**	1048576	4096	Asynchronous	2,753.1 μs	21.54 μs	1.44	44.28 KB	3.10
Read	PR #126845	1048576	4096	Asynchronous	1,915.9 μs	25.01 μs	1.00	14.28 KB	1.00
Write	main	1048576	4096	Asynchronous	3,550.3 μs	17.68 μs	1.39	44.28 KB	3.10
Write	PR #126845	1048576	4096	Asynchronous	2,555.1 μs	17.57 μs	1.00	14.28 KB	1.00
Read	main**	104857600	4096	Asynchronous	274,424.8 μs	2,905.51 μs	1.43	4400.71 KB	3.14
Read	PR #126845	104857600	4096	Asynchronous	191,465.6 μs	2,007.69 μs	1.00	1400.71 KB	1.00
Write	main	104857600	4096	Asynchronous	343,319.1 μs	6,634.30 μs	1.40	4400.71 KB	3.14
Write	PR #126845	104857600	4096	Asynchronous	245,936.5 μs	2,434.75 μs	1.00	1400.71 KB	1.00

Full logs