[Perf] 28 Regressions from DateTime and BLK<SIMD> changes

[performanceautofiler]

Run Information

Name	Value
Architecture	x64
OS	Windows 10.0.19042
Queue	OwlWindows
Baseline	33b18692fdf2ef438de3da38bc419c6616a746c5
Compare	7222061f18b8342a0bd4edbd37df318fd43c47d3
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Regressions in System.Collections.ContainsFalse<Int32>

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
ImmutableHashSet - Duration of single invocation	9.55 μs	10.41 μs	1.09	0.04	False
HashSet - Duration of single invocation	2.52 μs	2.67 μs	1.06	0.03	False

Test Report

Repro

General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

Payloads

Baseline
Compare

git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Collections.ContainsFalse<Int32>*'

Payloads

Baseline
Compare

Histogram

System.Collections.ContainsFalse<Int32>.ImmutableHashSet(Size: 512)

Description of detection logic

IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 10.406454386839483 > 10.17372654075638.
IsChangePoint: Marked as a change because one of 2/15/2023 3:19:23 AM, 4/19/2023 8:38:27 PM, 4/25/2023 3:46:39 AM falls between 4/12/2023 8:39:35 PM and 4/25/2023 3:46:39 AM.
IsRegressionStdDev: Marked as regression because -14.954844071377268 (T) = (0 -10513.704699392054) / Math.Sqrt((24111.282769521145 / (26)) + (36718.63049997734 / (23))) is less than -2.011740513728388 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (26) + (23) - 2, .025) and -0.07695804401064926 = (9762.408812360467 - 10513.704699392054) / 9762.408812360467 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

JIT Disasms

System.Collections.ContainsFalse<Int32>.HashSet(Size: 512)

Description of detection logic

IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 2.67230336631481 > 2.644351157467016.
IsChangePoint: Marked as a change because one of 2/20/2023 10:31:48 AM, 2/24/2023 9:01:57 AM, 3/6/2023 11:14:52 AM, 3/14/2023 8:42:09 PM, 4/9/2023 11:04:55 PM, 4/12/2023 8:39:35 PM, 4/25/2023 3:46:39 AM falls between 4/12/2023 8:39:35 PM and 4/25/2023 3:46:39 AM.
IsRegressionStdDev: Marked as regression because -35.45124210444055 (T) = (0 -2680.462407508129) / Math.Sqrt((39.969712483490866 / (11)) + (615.910384341103 / (37))) is less than -2.0128955989180297 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (11) + (37) - 2, .025) and -0.06333194483223217 = (2520.8143332240816 - 2680.462407508129) / 2520.8143332240816 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

JIT Disasms

Docs

Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository

---

Run Information

Name	Value
Architecture	x64
OS	Windows 10.0.19042
Queue	OwlWindows
Baseline	33b18692fdf2ef438de3da38bc419c6616a746c5
Compare	7222061f18b8342a0bd4edbd37df318fd43c47d3
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Regressions in System.Tests.Perf_DateTime

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
ToString - Duration of single invocation	29.35 ns	31.97 ns	1.09	0.03	False
ToString - Duration of single invocation	41.42 ns	44.65 ns	1.08	0.01	False

Test Report

Repro

General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

Payloads

Baseline
Compare

git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Tests.Perf_DateTime*'

Payloads

Baseline
Compare

Histogram

System.Tests.Perf_DateTime.ToString(format: "r")

Description of detection logic

IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 31.9662792608466 > 30.6985330592904.
IsChangePoint: Marked as a change because one of 2/24/2023 9:01:57 AM, 3/6/2023 11:14:52 AM, 4/9/2023 4:09:45 AM, 4/19/2023 8:38:27 PM, 4/25/2023 3:46:39 AM falls between 4/12/2023 8:39:35 PM and 4/25/2023 3:46:39 AM.
IsRegressionStdDev: Marked as regression because -14.0585577856107 (T) = (0 -31.458272567814532) / Math.Sqrt((1.1382234849319144 / (26)) + (0.3285843092318028 / (23))) is less than -2.011740513728388 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (26) + (23) - 2, .025) and -0.1206818906260693 = (28.070653082687326 - 31.458272567814532) / 28.070653082687326 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

JIT Disasms

System.Tests.Perf_DateTime.ToString(format: "o")

Description of detection logic

IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 44.65170413011696 > 43.58310395205574.
IsChangePoint: Marked as a change because one of 2/24/2023 12:59:32 PM, 3/14/2023 5:06:59 PM, 4/12/2023 8:39:35 PM, 4/19/2023 8:38:27 PM, 4/25/2023 3:46:39 AM falls between 4/12/2023 8:39:35 PM and 4/25/2023 3:46:39 AM.
IsRegressionStdDev: Marked as regression because -15.86348378384795 (T) = (0 -44.893365140152405) / Math.Sqrt((1.8103046018576885 / (26)) + (0.21299533530297257 / (22))) is less than -2.0128955989180297 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (26) + (22) - 2, .025) and -0.11050936014393867 = (40.4259223302121 - 44.893365140152405) / 40.4259223302121 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

JIT Disasms

Docs

Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository

---

Run Information

Name	Value
Architecture	x64
OS	Windows 10.0.19042
Queue	OwlWindows
Baseline	33b18692fdf2ef438de3da38bc419c6616a746c5
Compare	7222061f18b8342a0bd4edbd37df318fd43c47d3
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Regressions in System.Tests.Perf_Int32

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
ParseSpan - Duration of single invocation	10.04 ns	12.87 ns	1.28	0.04	False
ParseSpan - Duration of single invocation	13.19 ns	14.99 ns	1.14	0.04	False
Parse - Duration of single invocation	13.51 ns	14.89 ns	1.10	0.07	False
TryParseSpan - Duration of single invocation	9.87 ns	12.78 ns	1.30	0.06	False
TryParseSpan - Duration of single invocation	13.24 ns	15.13 ns	1.14	0.06	False
Parse - Duration of single invocation	10.17 ns	12.79 ns	1.26	0.05	False

Test Report

Repro

General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

Payloads

Baseline
Compare

git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Tests.Perf_Int32*'

Payloads

Baseline
Compare

Histogram

System.Tests.Perf_Int32.ParseSpan(value: "4")

Description of detection logic

IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 12.86711452888599 > 10.541584891604964.
IsChangePoint: Marked as a change because one of 3/31/2023 8:05:26 PM, 4/4/2023 4:23:54 PM, 4/19/2023 8:38:27 PM, 4/25/2023 3:46:39 AM falls between 4/12/2023 8:39:35 PM and 4/25/2023 3:46:39 AM.
IsRegressionStdDev: Marked as regression because -34.01468767228998 (T) = (0 -12.759194467892694) / Math.Sqrt((0.03170193106819649 / (25)) + (0.09994248817461299 / (23))) is less than -2.0128955989180297 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (25) + (23) - 2, .025) and -0.24958762648219918 = (10.210724080080713 - 12.759194467892694) / 10.210724080080713 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

JIT Disasms

System.Tests.Perf_Int32.ParseSpan(value: "12345")

Description of detection logic

IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 14.985658142954462 > 13.87914673703071.
IsChangePoint: Marked as a change because one of 2/24/2023 9:01:57 AM, 2/28/2023 10:21:25 PM, 3/6/2023 11:14:52 AM, 3/20/2023 8:31:51 AM, 3/31/2023 8:05:26 PM, 4/4/2023 4:23:54 PM, 4/17/2023 6:40:18 PM, 4/25/2023 3:46:39 AM falls between 4/12/2023 8:39:35 PM and 4/25/2023 3:46:39 AM.
IsRegressionStdDev: Marked as regression because -14.895403839551003 (T) = (0 -15.418045556622896) / Math.Sqrt((0.026923035149472856 / (16)) + (0.5778228656040483 / (33))) is less than -2.011740513728388 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (16) + (33) - 2, .025) and -0.15452213343401783 = (13.35448243920917 - 15.418045556622896) / 13.35448243920917 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

JIT Disasms

System.Tests.Perf_Int32.Parse(value: "12345")

Description of detection logic

IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 14.891160229348904 > 14.184186638998632.
IsChangePoint: Marked as a change because one of 2/24/2023 9:01:57 AM, 2/28/2023 10:21:25 PM, 3/6/2023 11:14:52 AM, 3/20/2023 8:31:51 AM, 3/31/2023 8:05:26 PM, 4/4/2023 4:23:54 PM, 4/19/2023 8:38:27 PM, 4/25/2023 3:46:39 AM falls between 4/12/2023 8:39:35 PM and 4/25/2023 3:46:39 AM.
IsRegressionStdDev: Marked as regression because -19.782095336348252 (T) = (0 -15.006184038866632) / Math.Sqrt((0.09288388073624108 / (26)) + (0.012518667732933057 / (23))) is less than -2.011740513728388 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (26) + (23) - 2, .025) and -0.09239740240963 = (13.736927610561613 - 15.006184038866632) / 13.736927610561613 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

JIT Disasms

System.Tests.Perf_Int32.TryParseSpan(value: "4")

Description of detection logic

IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 12.78123161081272 > 10.344646253851487.
IsChangePoint: Marked as a change because one of 3/31/2023 8:05:26 PM, 4/4/2023 4:23:54 PM, 4/19/2023 8:38:27 PM, 4/25/2023 3:46:39 AM falls between 4/12/2023 8:39:35 PM and 4/25/2023 3:46:39 AM.
IsRegressionStdDev: Marked as regression because -35.064014330132146 (T) = (0 -12.748326626785412) / Math.Sqrt((0.09037098672998609 / (26)) + (0.047122615944843835 / (23))) is less than -2.011740513728388 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (26) + (23) - 2, .025) and -0.2569714963825048 = (10.142096828348453 - 12.748326626785412) / 10.142096828348453 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

JIT Disasms

System.Tests.Perf_Int32.TryParseSpan(value: "12345")

Description of detection logic

IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 15.132671937505771 > 13.898637255737551.
IsChangePoint: Marked as a change because one of 2/6/2023 9:02:07 PM, 2/9/2023 12:40:40 PM, 3/6/2023 11:14:52 AM, 3/20/2023 8:31:51 AM, 3/24/2023 7:28:10 PM, 4/4/2023 4:23:54 PM, 4/17/2023 6:40:18 PM, 4/25/2023 3:46:39 AM falls between 4/12/2023 8:39:35 PM and 4/25/2023 3:46:39 AM.
IsRegressionStdDev: Marked as regression because -17.174217082468825 (T) = (0 -15.347677552361151) / Math.Sqrt((0.03299352017515052 / (16)) + (0.36111047850884465 / (32))) is less than -2.0128955989180297 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (16) + (32) - 2, .025) and -0.14847147764309954 = (13.36356875301575 - 15.347677552361151) / 13.36356875301575 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

JIT Disasms

System.Tests.Perf_Int32.Parse(value: "4")

Description of detection logic

IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 12.788073837112874 > 10.683626632389936.
IsChangePoint: Marked as a change because one of 3/31/2023 8:05:26 PM, 4/4/2023 4:23:54 PM, 4/19/2023 8:38:27 PM, 4/25/2023 3:46:39 AM falls between 4/12/2023 8:39:35 PM and 4/25/2023 3:46:39 AM.
IsRegressionStdDev: Marked as regression because -11.20283417924027 (T) = (0 -11.436759404902167) / Math.Sqrt((0.02246685706852503 / (25)) + (0.2281684267753229 / (23))) is less than -2.0128955989180297 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (25) + (23) - 2, .025) and -0.1134457879976079 = (10.271500892261436 - 11.436759404902167) / 10.271500892261436 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

JIT Disasms

Docs

Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository

---

Run Information

Name	Value
Architecture	x64
OS	Windows 10.0.19042
Queue	OwlWindows
Baseline	33b18692fdf2ef438de3da38bc419c6616a746c5
Compare	7222061f18b8342a0bd4edbd37df318fd43c47d3
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Regressions in System.Tests.Perf_String

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
Replace_Char - Duration of single invocation	99.02 ns	109.65 ns	1.11	0.04	False

Test Report

Repro

General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

Payloads

Baseline
Compare

git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Tests.Perf_String*'

Payloads

Baseline
Compare

Histogram

System.Tests.Perf_String.Replace_Char(text: "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", oldChar: 'b', newChar: '+')

Description of detection logic

IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 109.64749021207822 > 104.04009500395063.
IsChangePoint: Marked as a change because one of 2/24/2023 9:01:57 AM, 3/6/2023 11:14:52 AM, 3/20/2023 8:31:51 AM, 3/25/2023 12:18:49 AM, 4/19/2023 8:38:27 PM, 4/25/2023 3:46:39 AM falls between 4/12/2023 8:39:35 PM and 4/25/2023 3:46:39 AM.
IsRegressionStdDev: Marked as regression because -9.896255491607077 (T) = (0 -110.48898387108157) / Math.Sqrt((22.188763896681692 / (26)) + (0.3632143876956923 / (23))) is less than -2.011740513728388 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (26) + (23) - 2, .025) and -0.09111360485960471 = (101.2625847381844 - 110.48898387108157) / 101.2625847381844 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

JIT Disasms

Docs

Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository

---

Run Information

Name	Value
Architecture	x64
OS	Windows 10.0.19042
Queue	OwlWindows
Baseline	33b18692fdf2ef438de3da38bc419c6616a746c5
Compare	7222061f18b8342a0bd4edbd37df318fd43c47d3
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Regressions in System.Tests.Perf_UInt64

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
Parse - Duration of single invocation	9.97 ns	12.13 ns	1.22	0.04	False
ParseSpan - Duration of single invocation	9.69 ns	11.45 ns	1.18	0.04	False

Test Report

Repro

General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

Payloads

Baseline
Compare

git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Tests.Perf_UInt64*'

Payloads

Baseline
Compare

Histogram

System.Tests.Perf_UInt64.Parse(value: "0")

Description of detection logic

IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 12.1306987326699 > 10.472873386100177.
IsChangePoint: Marked as a change because one of 2/24/2023 9:01:57 AM, 3/31/2023 8:05:26 PM, 4/4/2023 8:16:00 PM, 4/19/2023 8:38:27 PM, 4/25/2023 3:46:39 AM falls between 4/12/2023 8:39:35 PM and 4/25/2023 3:46:39 AM.
IsRegressionStdDev: Marked as regression because -19.080673866576742 (T) = (0 -11.852860195526727) / Math.Sqrt((0.15319191748165384 / (26)) + (0.016907789211674927 / (23))) is less than -2.011740513728388 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (26) + (23) - 2, .025) and -0.15081255304693253 = (10.299557616177083 - 11.852860195526727) / 10.299557616177083 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

JIT Disasms

System.Tests.Perf_UInt64.ParseSpan(value: "0")

Description of detection logic

IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 11.450567195756538 > 10.180020040004713.
IsChangePoint: Marked as a change because one of 3/4/2023 1:07:20 AM, 3/20/2023 8:31:51 AM, 3/31/2023 8:05:26 PM, 4/4/2023 4:23:54 PM, 4/17/2023 6:40:18 PM, 4/25/2023 3:46:39 AM falls between 4/12/2023 8:39:35 PM and 4/25/2023 3:46:39 AM.
IsRegressionStdDev: Marked as regression because -22.8633948039552 (T) = (0 -10.937610888869946) / Math.Sqrt((0.01807251278659947 / (16)) + (0.0351871883082982 / (33))) is less than -2.011740513728388 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (16) + (33) - 2, .025) and -0.10858911226653534 = (9.866244190787473 - 10.937610888869946) / 9.866244190787473 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

JIT Disasms

Docs

Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository

---

Run Information

Name	Value
Architecture	x64
OS	Windows 10.0.19042
Queue	OwlWindows
Baseline	33b18692fdf2ef438de3da38bc419c6616a746c5
Compare	7222061f18b8342a0bd4edbd37df318fd43c47d3
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Regressions in System.Memory.Span<Char>

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
SequenceEqual - Duration of single invocation	15.82 ns	20.05 ns	1.27	0.10	False
Reverse - Duration of single invocation	15.73 ns	22.40 ns	1.42	0.15	False

Test Report

Repro

General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

Payloads

Baseline
Compare

git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Memory.Span<Char>*'

Payloads

Baseline
Compare

Histogram

System.Memory.Span<Char>.SequenceEqual(Size: 512)

Description of detection logic

IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 20.052494047876813 > 16.779730428942077.
IsChangePoint: Marked as a change because one of 2/13/2023 6:54:14 PM, 2/14/2023 11:21:41 AM, 3/3/2023 11:43:56 AM, 3/29/2023 12:02:44 PM, 4/19/2023 8:38:27 PM, 4/25/2023 3:46:39 AM falls between 4/12/2023 8:39:35 PM and 4/25/2023 3:46:39 AM.
IsRegressionStdDev: Marked as regression because -16.857643896483232 (T) = (0 -19.89227967607469) / Math.Sqrt((0.4971515418208281 / (26)) + (0.08822333560633372 / (23))) is less than -2.011740513728388 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (26) + (23) - 2, .025) and -0.14731721263239664 = (17.338081793817057 - 19.89227967607469) / 17.338081793817057 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

JIT Disasms

System.Memory.Span<Char>.Reverse(Size: 512)

Description of detection logic

IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 22.403705784755637 > 16.725906951583735.
IsChangePoint: Marked as a change because one of 4/12/2023 8:39:35 PM, 4/25/2023 3:46:39 AM falls between 4/12/2023 8:39:35 PM and 4/25/2023 3:46:39 AM.
IsRegressionStdDev: Marked as regression because -13.992442343706022 (T) = (0 -20.926013046109226) / Math.Sqrt((0.10233301764300992 / (11)) + (4.125328245231515 / (37))) is less than -2.0128955989180297 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (11) + (37) - 2, .025) and -0.3027631529081198 = (16.062791612885814 - 20.926013046109226) / 16.062791612885814 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

JIT Disasms

Docs

Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository

---

Run Information

Name	Value
Architecture	x64
OS	Windows 10.0.19042
Queue	OwlWindows
Baseline	33b18692fdf2ef438de3da38bc419c6616a746c5
Compare	7222061f18b8342a0bd4edbd37df318fd43c47d3
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Regressions in System.Collections.CreateAddAndRemove<Int32>

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
LinkedList - Duration of single invocation	8.77 μs	9.22 μs	1.05	0.02	False

Test Report

Repro

General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

Payloads

Baseline
Compare

git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Collections.CreateAddAndRemove<Int32>*'

Payloads

Baseline
Compare

Histogram

System.Collections.CreateAddAndRemove<Int32>.LinkedList(Size: 512)

Description of detection logic

IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 9.220822258318567 > 9.095379548717531.
IsChangePoint: Marked as a change because one of 3/8/2023 9:36:36 PM, 3/14/2023 8:42:09 PM, 3/17/2023 9:25:32 PM, 3/20/2023 8:31:51 AM, 4/9/2023 11:04:55 PM, 4/19/2023 8:38:27 PM, 4/25/2023 3:46:39 AM falls between 4/12/2023 8:39:35 PM and 4/25/2023 3:46:39 AM.
IsRegressionStdDev: Marked as regression because -28.964446859567953 (T) = (0 -9359.732478660419) / Math.Sqrt((9528.745789613324 / (26)) + (1337.3926951728472 / (23))) is less than -2.011740513728388 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (26) + (23) - 2, .025) and -0.06811271280020367 = (8762.869654572876 - 9359.732478660419) / 8762.869654572876 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

JIT Disasms

Docs

Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository

[performanceautofiler]

Run Information

Name	Value
Architecture	x64
OS	Windows 10.0.19042
Queue	OwlWindows
Baseline	33b18692fdf2ef438de3da38bc419c6616a746c5
Compare	7222061f18b8342a0bd4edbd37df318fd43c47d3
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Regressions in System.Text.Encodings.Web.Tests.Perf_Encoders

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
EncodeUtf8 - Duration of single invocation	57.72 ns	65.89 ns	1.14	0.04	False
EncodeUtf8 - Duration of single invocation	80.14 ns	85.85 ns	1.07	0.03	False
EncodeUtf8 - Duration of single invocation	66.48 ns	74.02 ns	1.11	0.03	False

Test Report

Repro

General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

Payloads

Baseline
Compare

git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Text.Encodings.Web.Tests.Perf_Encoders*'

Payloads

Baseline
Compare

Histogram

System.Text.Encodings.Web.Tests.Perf_Encoders.EncodeUtf8(arguments: UnsafeRelaxed,hello "there",512)

Description of detection logic

IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 65.89425525410887 > 60.59133178957043.
IsChangePoint: Marked as a change because one of 2/20/2023 10:31:48 AM, 3/6/2023 11:14:52 AM, 3/20/2023 8:31:51 AM, 3/25/2023 12:18:49 AM, 4/9/2023 11:04:55 PM, 4/19/2023 8:38:27 PM, 4/25/2023 3:46:39 AM falls between 4/12/2023 8:39:35 PM and 4/25/2023 3:46:39 AM.
IsRegressionStdDev: Marked as regression because -11.227284735177099 (T) = (0 -65.56903802551898) / Math.Sqrt((9.64016855166287 / (26)) + (0.029649562725540205 / (23))) is less than -2.011740513728388 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (26) + (23) - 2, .025) and -0.1166252764451583 = (58.72071804989211 - 65.56903802551898) / 58.72071804989211 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

JIT Disasms

System.Text.Encodings.Web.Tests.Perf_Encoders.EncodeUtf8(arguments: Url,&lorem ipsum=dolor sit amet,512)

Description of detection logic

IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 85.84984990474905 > 83.94287412196319.
IsChangePoint: Marked as a change because one of 2/24/2023 8:06:06 PM, 3/6/2023 11:14:52 AM, 3/20/2023 8:31:51 AM, 3/25/2023 12:18:49 AM, 4/9/2023 11:04:55 PM, 4/19/2023 8:38:27 PM, 4/25/2023 3:46:39 AM falls between 4/12/2023 8:39:35 PM and 4/25/2023 3:46:39 AM.
IsRegressionStdDev: Marked as regression because -10.879993392109268 (T) = (0 -85.44583813028389) / Math.Sqrt((5.252203857669367 / (26)) + (0.04570183254220976 / (23))) is less than -2.011740513728388 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (26) + (23) - 2, .025) and -0.06101980841925953 = (80.53180294304191 - 85.44583813028389) / 80.53180294304191 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

JIT Disasms

System.Text.Encodings.Web.Tests.Perf_Encoders.EncodeUtf8(arguments: JavaScript,&Hello+<World>!,512)

Description of detection logic

IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 74.02139062525424 > 69.82852146934343.
IsChangePoint: Marked as a change because one of 2/20/2023 10:31:48 AM, 3/6/2023 11:14:52 AM, 3/20/2023 8:31:51 AM, 3/25/2023 12:18:49 AM, 4/9/2023 11:04:55 PM, 4/19/2023 8:38:27 PM, 4/25/2023 3:46:39 AM falls between 4/12/2023 8:39:35 PM and 4/25/2023 3:46:39 AM.
IsRegressionStdDev: Marked as regression because -11.113639776830931 (T) = (0 -73.81099901839764) / Math.Sqrt((8.57815809546916 / (26)) + (0.021154771914789438 / (23))) is less than -2.011740513728388 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (26) + (23) - 2, .025) and -0.09481829603360784 = (67.41849244372862 - 73.81099901839764) / 67.41849244372862 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

JIT Disasms

Docs

Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository

---

Run Information

Name	Value
Architecture	x64
OS	Windows 10.0.19042
Queue	OwlWindows
Baseline	33b18692fdf2ef438de3da38bc419c6616a746c5
Compare	7222061f18b8342a0bd4edbd37df318fd43c47d3
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Regressions in Span.IndexerBench

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
Ref - Duration of single invocation	577.37 ns	638.86 ns	1.11	0.03	False

Test Report

Repro

General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

Payloads

Baseline
Compare

git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'Span.IndexerBench*'

Payloads

Baseline
Compare

Histogram

Span.IndexerBench.Ref(length: 1024)

Description of detection logic

IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 638.857395546797 > 606.2181757228534.
IsChangePoint: Marked as a change because one of 2/9/2023 12:40:40 PM, 2/24/2023 9:01:57 AM, 3/6/2023 11:14:52 AM, 3/14/2023 8:42:09 PM, 4/9/2023 11:04:55 PM, 4/19/2023 8:38:27 PM, 4/25/2023 3:46:39 AM falls between 4/12/2023 8:39:35 PM and 4/25/2023 3:46:39 AM.
IsRegressionStdDev: Marked as regression because -386.61522652047535 (T) = (0 -638.7048217349823) / Math.Sqrt((0.06619224271311225 / (26)) + (0.5207508876615444 / (23))) is less than -2.011740513728388 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (26) + (23) - 2, .025) and -0.10627518298746473 = (577.3471479403325 - 638.7048217349823) / 577.3471479403325 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

JIT Disasms

Docs

Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository

---

Run Information

Name	Value
Architecture	x64
OS	Windows 10.0.19042
Queue	OwlWindows
Baseline	33b18692fdf2ef438de3da38bc419c6616a746c5
Compare	7222061f18b8342a0bd4edbd37df318fd43c47d3
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Regressions in System.Xml.Linq.Perf_XElement

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
CreateElementWithNamespace - Duration of single invocation	72.66 ns	77.80 ns	1.07	0.04	False

Test Report

Repro

General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

Payloads

Baseline
Compare

git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Xml.Linq.Perf_XElement*'

Payloads

Baseline
Compare

Histogram

System.Xml.Linq.Perf_XElement.CreateElementWithNamespace

Description of detection logic

IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 77.80203040361614 > 75.98844148898549.
IsChangePoint: Marked as a change because one of 2/9/2023 4:10:34 PM, 2/13/2023 6:54:14 PM, 2/20/2023 10:31:48 AM, 3/6/2023 11:14:52 AM, 3/17/2023 8:17:18 AM, 4/19/2023 8:38:27 PM, 4/25/2023 3:46:39 AM falls between 4/12/2023 8:39:35 PM and 4/25/2023 3:46:39 AM.
IsRegressionStdDev: Marked as regression because -6.914182468576352 (T) = (0 -77.6365802696803) / Math.Sqrt((4.143639052516538 / (25)) + (5.590998487582024 / (23))) is less than -2.0128955989180297 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (25) + (23) - 2, .025) and -0.06038229097338615 = (73.21565149717202 - 77.6365802696803) / 73.21565149717202 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

JIT Disasms

Docs

Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository

---

Run Information

Name	Value
Architecture	x64
OS	Windows 10.0.19042
Queue	OwlWindows
Baseline	33b18692fdf2ef438de3da38bc419c6616a746c5
Compare	7222061f18b8342a0bd4edbd37df318fd43c47d3
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Regressions in System.Collections.IterateForEach<Int32>

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
Queue - Duration of single invocation	1.59 μs	1.72 μs	1.08	0.02	False
ConcurrentStack - Duration of single invocation	2.31 μs	2.45 μs	1.06	0.03	False

Test Report

Repro

General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

Payloads

Baseline
Compare

git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Collections.IterateForEach<Int32>*'

Payloads

Baseline
Compare

Histogram

System.Collections.IterateForEach<Int32>.Queue(Size: 512)

Description of detection logic

IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 1.7233265691146697 > 1.6720829046289911.
IsChangePoint: Marked as a change because one of 2/24/2023 9:01:57 AM, 3/6/2023 11:14:52 AM, 3/14/2023 8:42:09 PM, 4/9/2023 11:04:55 PM, 4/19/2023 8:38:27 PM, 4/25/2023 3:46:39 AM falls between 4/12/2023 8:39:35 PM and 4/25/2023 3:46:39 AM.
IsRegressionStdDev: Marked as regression because -366.38768409627085 (T) = (0 -1723.9375028563006) / Math.Sqrt((2.988588597383548 / (26)) + (0.342064316953853 / (23))) is less than -2.011740513728388 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (26) + (23) - 2, .025) and -0.0829249657637593 = (1591.927010049539 - 1723.9375028563006) / 1591.927010049539 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

JIT Disasms

System.Collections.IterateForEach<Int32>.ConcurrentStack(Size: 512)

Description of detection logic

IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 2.4481386510993324 > 2.4235551350007287.
IsChangePoint: Marked as a change because one of 2/9/2023 12:40:40 PM, 2/24/2023 9:01:57 AM, 3/6/2023 11:14:52 AM, 3/20/2023 8:31:51 AM, 3/25/2023 12:18:49 AM, 4/19/2023 8:38:27 PM, 4/25/2023 3:46:39 AM falls between 4/12/2023 8:39:35 PM and 4/25/2023 3:46:39 AM.
IsRegressionStdDev: Marked as regression because -137.41853511850877 (T) = (0 -2451.221455458673) / Math.Sqrt((0.49528940219322265 / (25)) + (24.65636698239275 / (23))) is less than -2.0128955989180297 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (25) + (23) - 2, .025) and -0.06222369103804559 = (2307.6320704758955 - 2451.221455458673) / 2307.6320704758955 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

JIT Disasms

Docs

Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository

---

Run Information

Name	Value
Architecture	x64
OS	Windows 10.0.19042
Queue	OwlWindows
Baseline	33b18692fdf2ef438de3da38bc419c6616a746c5
Compare	7222061f18b8342a0bd4edbd37df318fd43c47d3
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Regressions in System.Text.Json.Tests.Perf_Get

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
GetInt16 - Duration of single invocation	655.59 ns	711.41 ns	1.09	0.02	False
GetInt32 - Duration of single invocation	655.01 ns	710.77 ns	1.09	0.02	False

Test Report

Repro

General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

Payloads

Baseline
Compare

git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Text.Json.Tests.Perf_Get*'

Payloads

Baseline
Compare

Histogram

System.Text.Json.Tests.Perf_Get.GetInt16

Description of detection logic

IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 711.4115729435691 > 688.3852778977588.
IsChangePoint: Marked as a change because one of 2/24/2023 9:01:57 AM, 3/6/2023 11:14:52 AM, 4/19/2023 8:38:27 PM, 4/25/2023 3:46:39 AM falls between 4/12/2023 8:39:35 PM and 4/25/2023 3:46:39 AM.
IsRegressionStdDev: Marked as regression because -11.278032147009467 (T) = (0 -712.3140575184115) / Math.Sqrt((445.69053937907154 / (26)) + (0.1837296038552731 / (22))) is less than -2.0128955989180297 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (26) + (22) - 2, .025) and -0.07016981120728544 = (665.6084390147691 - 712.3140575184115) / 665.6084390147691 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

JIT Disasms

System.Text.Json.Tests.Perf_Get.GetInt32

Description of detection logic

IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 710.7687730193559 > 687.7732912312368.
IsChangePoint: Marked as a change because one of 2/20/2023 10:31:48 AM, 3/6/2023 11:14:52 AM, 4/19/2023 8:38:27 PM, 4/25/2023 3:46:39 AM falls between 4/12/2023 8:39:35 PM and 4/25/2023 3:46:39 AM.
IsRegressionStdDev: Marked as regression because -11.645139369653121 (T) = (0 -710.5247092520658) / Math.Sqrt((421.4212194207188 / (26)) + (0.16401793604905324 / (22))) is less than -2.0128955989180297 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (26) + (22) - 2, .025) and -0.07066258385543282 = (663.6308394129939 - 710.5247092520658) / 663.6308394129939 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

JIT Disasms

Docs

Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository

---

Run Information

Name	Value
Architecture	x64
OS	Windows 10.0.19042
Queue	OwlWindows
Baseline	33b18692fdf2ef438de3da38bc419c6616a746c5
Compare	7222061f18b8342a0bd4edbd37df318fd43c47d3
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Regressions in System.Collections.Concurrent.IsEmpty<Int32>

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
Dictionary - Duration of single invocation	4.20 ns	5.71 ns	1.36	0.02	False

Test Report

Repro

General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

Payloads

Baseline
Compare

git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Collections.Concurrent.IsEmpty<Int32>*'

Payloads

Baseline
Compare

Histogram

System.Collections.Concurrent.IsEmpty<Int32>.Dictionary(Size: 512)

Description of detection logic

IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 5.708672500093949 > 4.4087612871366035.
IsChangePoint: Marked as a change because one of 2/9/2023 12:40:40 PM, 3/17/2023 9:25:32 PM, 4/19/2023 8:38:27 PM, 4/25/2023 3:46:39 AM falls between 4/12/2023 8:39:35 PM and 4/25/2023 3:46:39 AM.
IsRegressionStdDev: Marked as regression because -11.588738975018359 (T) = (0 -4.710494690844941) / Math.Sqrt((0.00039606175533358405 / (26)) + (0.047350754833819494 / (23))) is less than -2.011740513728388 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (26) + (23) - 2, .025) and -0.12617584682725244 = (4.18273460944461 - 4.710494690844941) / 4.18273460944461 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

JIT Disasms

Docs

Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository

---

Run Information

Name	Value
Architecture	x64
OS	Windows 10.0.19042
Queue	OwlWindows
Baseline	33b18692fdf2ef438de3da38bc419c6616a746c5
Compare	7222061f18b8342a0bd4edbd37df318fd43c47d3
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Regressions in System.Text.Json.Document.Tests.Perf_ParseThenWrite

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
ParseThenWrite - Duration of single invocation	17.36 μs	18.95 μs	1.09	0.12	False

Test Report

Repro

General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

Payloads

Baseline
Compare

git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Text.Json.Document.Tests.Perf_ParseThenWrite*'

Payloads

Baseline
Compare

Histogram

System.Text.Json.Document.Tests.Perf_ParseThenWrite.ParseThenWrite(IsDataIndented: True, TestCase: DeepTree)

Description of detection logic

IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 18.94852327082226 > 18.177097202219283.
IsChangePoint: Marked as a change because one of 2/7/2023 2:48:42 AM, 4/19/2023 8:38:27 PM, 4/25/2023 3:46:39 AM falls between 4/12/2023 8:39:35 PM and 4/25/2023 3:46:39 AM.
IsRegressionStdDev: Marked as regression because -6.045202720953295 (T) = (0 -19295.8079116942) / Math.Sqrt((697043.7155571074 / (24)) + (318867.13821621164 / (22))) is less than -2.0153675744421933 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (24) + (22) - 2, .025) and -0.06994227230147725 = (18034.43831617976 - 19295.8079116942) / 18034.43831617976 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

JIT Disasms

Docs

Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository

---

Run Information

Name	Value
Architecture	x64
OS	Windows 10.0.19042
Queue	OwlWindows
Baseline	33b18692fdf2ef438de3da38bc419c6616a746c5
Compare	7222061f18b8342a0bd4edbd37df318fd43c47d3
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Regressions in System.Tests.Perf_DateTimeOffset

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
ToString - Duration of single invocation	33.60 ns	37.84 ns	1.13	0.02	False

Test Report

Repro

General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

Payloads

Baseline
Compare

git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Tests.Perf_DateTimeOffset*'

Payloads

Baseline
Compare

Histogram

System.Tests.Perf_DateTimeOffset.ToString(format: "r")

Description of detection logic

IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 37.84058153316338 > 35.25521734481571.
IsChangePoint: Marked as a change because one of 4/9/2023 4:09:45 AM, 4/19/2023 8:38:27 PM, 4/25/2023 3:46:39 AM falls between 4/12/2023 8:39:35 PM and 4/25/2023 3:46:39 AM.
IsRegressionStdDev: Marked as regression because -27.929461382443815 (T) = (0 -38.21368412946795) / Math.Sqrt((0.2699166311968077 / (26)) + (0.3824349904062816 / (23))) is less than -2.011740513728388 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (26) + (23) - 2, .025) and -0.13651244215036387 = (33.62363904891784 - 38.21368412946795) / 33.62363904891784 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

JIT Disasms

Docs

Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository

[kunalspathak]

#84963 and #84868

[kunalspathak]

@stephentoub for DateTime benchmark regression.
@SingleAccretion for other regressions.

[SingleAccretion]

Note: the SIMD change had one tiny regression in the benchmarks collection. Not yet clear how these came about.

Initial triage:

• https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows%2010.0.19042/amd/System.Tests.Perf_DateTimeOffset.ToString(format%3a%20%22r%22).html
• https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows%2010.0.19042/amd/System.Collections.ContainsFalse(Int32).ImmutableHashSet(Size%3a%20512).html
• https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows%2010.0.19042/amd/System.Collections.ContainsFalse(Int32).HashSet(Size%3a%20512).html
  • Bimodal behavior.
• https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows%2010.0.19042/amd/System.Tests.Perf_Int32.ParseSpan(value%3a%20%2212345%22).html
  • Disallow BLK<SIMD> #84868's merge timing doesn't correspond to the regression.
• https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows%2010.0.19042/amd/System.Tests.Perf_Int32.TryParseSpan(value%3a%20%224%22).html
• https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows%2010.0.19042/amd/System.Tests.Perf_Int32.TryParseSpan(value%3a%20%2212345%22).html
  • Disallow BLK<SIMD> #84868's merge timing doesn't correspond to the regression.
• https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows%2010.0.19042/amd/System.Tests.Perf_Int32.Parse(value%3a%20%224%22).html
• https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows%2010.0.19042/amd/System.Tests.Perf_String.Replace_Char(text%3a%20%22yfesgj0sg1ijslnjsb3uofdz3tbzf6ysgblu3at20nfab2wei1kxfbvsbpzwhanjczcqa2psra3aacxb67qnwbnfp2tok6v0a58lzfdql1fehvs91yzkt9xam7ahjbhvpd9edll13ab46i74ktwwgkgbi79.html
  • Looks like bimodal behavior to me.
• https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows%2010.0.19042/amd/System.Tests.Perf_UInt64.ParseSpan(value%3a%20%220%22).html
  • Disallow BLK<SIMD> #84868's merge timing doesn't correspond to the regression.
• https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows%2010.0.19042/amd/System.Memory.Span(Char).SequenceEqual(Size%3a%20512).html
  • Multimodal behavior.
• https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows%2010.0.19042/amd/System.Collections.CreateAddAndRemove(Int32).LinkedList(Size%3a%20512).html
  • Looks like bimodal behavior.
• https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows%2010.0.19042/amd/System.Text.Encodings.Web.Tests.Perf_Encoders.EncodeUtf8(arguments%3a%20UnsafeRelaxed%2chello%20%22there%22%2c512).html
  • Bimodal behavior.
• https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows%2010.0.19042/amd/System.Text.Encodings.Web.Tests.Perf_Encoders.EncodeUtf8(arguments%3a%20Url%2c%26lorem%20ipsum%3ddolor%20sit%20amet%2c512).html
  • Bimodal behavior.
• https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows%2010.0.19042/amd/System.Text.Encodings.Web.Tests.Perf_Encoders.EncodeUtf8(arguments%3a%20JavaScript%2c%26Hello%2b(World)!%2c512).html
  • Bimodal behavior.
• https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows%2010.0.19042/amd/Span.IndexerBench.Ref(length%3a%201024).html
  • Bimodal behavior.
• https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows%2010.0.19042/amd/System.Xml.Linq.Perf_XElement.CreateElementWithNamespace.html
  • Bimodal behavior.
• https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows%2010.0.19042/amd/System.Collections.IterateForEach(Int32).Queue(Size%3a%20512).html
  • Bimodal behavior.
• https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows%2010.0.19042/amd/System.Collections.IterateForEach(Int32).ConcurrentStack(Size%3a%20512).html
  • Bimodal behavior.
• https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows%2010.0.19042/amd/System.Text.Json.Tests.Perf_Get.GetInt16.html
  • Bimodal behavior.
• https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows%2010.0.19042/amd/System.Text.Json.Tests.Perf_Get.GetInt32.html
  • Bimodal behavior.
• https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows%2010.0.19042/amd/System.Collections.Concurrent.IsEmpty(Int32).Dictionary(Size%3a%20512).html
  • Should investigate this one first.
• https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows%2010.0.19042/amd/System.Text.Json.Document.Tests.Perf_ParseThenWrite.ParseThenWrite(IsDataIndented%3a%20True%2c%20TestCase%3a%20DeepTree).html

[stephentoub]

The DateTimeOffset one is likely #84963. This has been a bit of whack-a-mole; we added new features, which then caused some regressions on some platforms, fixing those issues caused issues to arise elsewhere, etc. I'll see if this 4ns regression persists, but even if it does, we might choose to accept it (it's small, .NET 8 is still faster than .NET 7, and this for the ToString method which is allocating); we added a few branches prior to the "r" handling, and my guess is that's what's causing us to take a bit longer to get here.