[Perf] Changes at 4/9/2022 9:54:15 AM

[performanceautofiler]

Run Information

Architecture	x86
OS	Windows 10.0.18362
Baseline	285b8259af30e255980b1ebfb2ddd60ca291a83a
Compare	0c64bdf3afc1fdc9166ad6c22c1990d3e0a6c509
Diff	Diff

Improvements in System.Memory.ReadOnlySpan

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
IndexOfString - Duration of single invocation	37.37 ns	34.47 ns	0.92	0.03	False
IndexOfString - Duration of single invocation	219.19 ns	19.87 ns	0.09	0.01	True
IndexOfString - Duration of single invocation	36.85 ns	28.04 ns	0.76	0.00	True
IndexOfString - Duration of single invocation	17.20 ns	14.36 ns	0.83	0.28	False
IndexOfString - Duration of single invocation	26.79 ns	23.72 ns	0.89	0.10	False
IndexOfString - Duration of single invocation	41.14 ns	37.83 ns	0.92	0.02	False
IndexOfString - Duration of single invocation	37.48 ns	33.29 ns	0.89	0.04	False
IndexOfString - Duration of single invocation	30.66 ns	18.35 ns	0.60	0.02	True
IndexOfString - Duration of single invocation	48.11 ns	44.64 ns	0.93	0.02	False

Test Report

Repro

git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net6.0 --filter 'System.Memory.ReadOnlySpan*'

Payloads

Baseline
Compare

Histogram

System.Memory.ReadOnlySpan.IndexOfString(input: "ABCDE", value: "c", comparisonType: InvariantCultureIgnoreCase)

Description of detection logic

IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsRegressionBase: Marked as not a regression because the compare was not 5% greater than the baseline, or the value was too small.
IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsImprovementWindowed:Marked as improvement because 34.467144309664 < 35.49049367549209.
IsChangePoint: Marked as a change because one of 4/9/2022 5:43:54 AM, 4/12/2022 5:02:33 PM falls between 4/4/2022 4:14:58 AM and 4/12/2022 5:02:33 PM.
IsImprovementStdDev: Marked as improvement because 73.72300878275536 (T) = (0 -34.331740111577375) / Math.Sqrt((0.2641244459343681 / (299)) + (0.0166083927349269 / (15))) is greater than 1.9675964973877862 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (15) - 2, .975) and 0.08743061838012758 = (37.62096428288687 - 34.331740111577375) / 37.62096428288687 is greater than 0.05.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Memory.ReadOnlySpan.IndexOfString(input: "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAXAAAAAAAAAAAAAAAAAAAAAAAAAAAAA", value: "x", comparisonType: OrdinalIgnoreCase)

```log

Description of detection logic

IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsRegressionBase: Marked as not a regression because the compare was not 5% greater than the baseline, or the value was too small.
IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsImprovementWindowed:Marked as improvement because 19.87106681071309 < 208.10935903589518.
IsChangePoint: Marked as a change because one of 4/9/2022 5:43:54 AM, 4/12/2022 5:02:33 PM falls between 4/4/2022 4:14:58 AM and 4/12/2022 5:02:33 PM.
IsImprovementStdDev: Marked as improvement because 885.4311350782195 (T) = (0 -20.153759571273948) / Math.Sqrt((0.15255121986127915 / (299)) + (0.7483541159518351 / (15))) is greater than 1.9675964973877862 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (15) - 2, .975) and 0.9079457485759327 = (218.9335012723248 - 20.153759571273948) / 218.9335012723248 is greater than 0.05.
IsChangeEdgeDetector: Marked as regression because Edge Detector said so.

```#### System.Memory.ReadOnlySpan.IndexOfString(input: "More Test's", value: "Tests", comparisonType: OrdinalIgnoreCase)

```log

Description of detection logic

IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsRegressionBase: Marked as not a regression because the compare was not 5% greater than the baseline, or the value was too small.
IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsImprovementWindowed:Marked as improvement because 28.036081790924072 < 34.69392756396552.
IsChangePoint: Marked as a change because one of 4/9/2022 5:43:54 AM, 4/12/2022 5:02:33 PM falls between 4/4/2022 4:14:58 AM and 4/12/2022 5:02:33 PM.
IsImprovementStdDev: Marked as improvement because 205.14619174496946 (T) = (0 -28.1039511988592) / Math.Sqrt((0.2001114405713706 / (299)) + (0.01590891618809219 / (15))) is greater than 1.9675964973877862 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (15) - 2, .975) and 0.23289361614631823 = (36.6363151062236 - 28.1039511988592) / 36.6363151062236 is greater than 0.05.
IsChangeEdgeDetector: Marked as regression because Edge Detector said so.

```#### System.Memory.ReadOnlySpan.IndexOfString(input: "だだだだだだだだだだだだだだだだだだだだだだだだだだだだだだだだだだだだだだだだだだだだだだだだだだすだだだだだだだだだだだだだだだだだだだだだだだだだだだだだだだだだだだだだだだだだだだだだだだだだ", value: "す", comparisonType: Ordinal)

```log

Description of detection logic

IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsRegressionBase: Marked as not a regression because the compare was not 5% greater than the baseline, or the value was too small.
IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsImprovementWindowed:Marked as improvement because 14.358982979464882 < 17.12686539144705.
IsChangePoint: Marked as a change because one of 4/9/2022 5:43:54 AM, 4/12/2022 5:02:33 PM falls between 4/4/2022 4:14:58 AM and 4/12/2022 5:02:33 PM.
IsImprovementStdDev: Marked as improvement because 19.034080936244386 (T) = (0 -14.552364307654507) / Math.Sqrt((1.301271835603534 / (299)) + (0.4439484827675951 / (15))) is greater than 1.9675964973877862 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (15) - 2, .975) and 0.19419553731576616 = (18.05942381999076 - 14.552364307654507) / 18.05942381999076 is greater than 0.05.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Memory.ReadOnlySpan.IndexOfString(input: "Hello WorldbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbareallyreallylongHello WorldbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbareallyreallylongHello Worldbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbareallyreallylong!xyz", value: "~", comparisonType: Ordinal)

```log

Description of detection logic

IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsRegressionBase: Marked as not a regression because the compare was not 5% greater than the baseline, or the value was too small.
IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsImprovementWindowed:Marked as improvement because 23.7239035878413 < 25.877334979095767.
IsChangePoint: Marked as a change because one of 4/9/2022 2:03:45 PM, 4/12/2022 5:02:33 PM falls between 4/4/2022 4:14:58 AM and 4/12/2022 5:02:33 PM.
IsImprovementStdDev: Marked as improvement because 17.459988707210996 (T) = (0 -23.97665501213095) / Math.Sqrt((0.4471211651676712 / (299)) + (0.3791046862505219 / (13))) is greater than 1.9676459287777595 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (13) - 2, .975) and 0.11308482093243676 = (27.03376329328158 - 23.97665501213095) / 27.03376329328158 is greater than 0.05.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Memory.ReadOnlySpan.IndexOfString(input: "AAAAA5AAAA", value: "5", comparisonType: InvariantCulture)

```log

Description of detection logic

IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsRegressionBase: Marked as not a regression because the compare was not 5% greater than the baseline, or the value was too small.
IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsImprovementWindowed:Marked as improvement because 37.834723154703774 < 39.08707259385519.
IsChangePoint: Marked as a change because one of 4/9/2022 5:43:54 AM, 4/12/2022 5:02:33 PM falls between 4/4/2022 4:14:58 AM and 4/12/2022 5:02:33 PM.
IsImprovementStdDev: Marked as improvement because 28.379976621285074 (T) = (0 -38.10865611549452) / Math.Sqrt((0.2146064682708601 / (299)) + (0.18505117555429126 / (15))) is greater than 1.9675964973877862 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (15) - 2, .975) and 0.07841577299177706 = (41.35124603771511 - 38.10865611549452) / 41.35124603771511 is greater than 0.05.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Memory.ReadOnlySpan.IndexOfString(input: "string1", value: "string2", comparisonType: InvariantCulture)

```log

Description of detection logic

IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsRegressionBase: Marked as not a regression because the compare was not 5% greater than the baseline, or the value was too small.
IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsImprovementWindowed:Marked as improvement because 33.28648742518219 < 35.56568474629773.
IsChangePoint: Marked as a change because one of 4/9/2022 9:54:15 AM, 4/12/2022 5:02:33 PM falls between 4/4/2022 4:14:58 AM and 4/12/2022 5:02:33 PM.
IsImprovementStdDev: Marked as improvement because 29.756660465268254 (T) = (0 -33.49778728011992) / Math.Sqrt((0.24061720381238794 / (299)) + (0.25887504308089615 / (14))) is greater than 1.9676211333067681 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (14) - 2, .975) and 0.10984161550486113 = (37.631266371903564 - 33.49778728011992) / 37.631266371903564 is greater than 0.05.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Memory.ReadOnlySpan.IndexOfString(input: "Hello WorldbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbareallyreallylongHello WorldbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbareallyreallylongHello Worldbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbareallyreallylong!xyz", value: "w", comparisonType: OrdinalIgnoreCase)

```log

Description of detection logic

IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsRegressionBase: Marked as not a regression because the compare was not 5% greater than the baseline, or the value was too small.
IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsImprovementWindowed:Marked as improvement because 18.347445801347497 < 28.436444450121577.
IsChangePoint: Marked as a change because one of 4/9/2022 5:43:54 AM, 4/12/2022 5:02:33 PM falls between 4/4/2022 4:14:58 AM and 4/12/2022 5:02:33 PM.
IsImprovementStdDev: Marked as improvement because 286.95823590711234 (T) = (0 -18.27040743641531) / Math.Sqrt((0.25207306337744945 / (299)) + (0.009397019983967211 / (15))) is greater than 1.9675964973877862 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (15) - 2, .975) and 0.37581374911374105 = (29.270762389389123 - 18.27040743641531) / 29.270762389389123 is greater than 0.05.
IsChangeEdgeDetector: Marked as regression because Edge Detector said so.

```#### System.Memory.ReadOnlySpan.IndexOfString(input: "foobardzsdzs", value: "rddzs", comparisonType: InvariantCulture)

```log

Description of detection logic

IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsRegressionBase: Marked as not a regression because the compare was not 5% greater than the baseline, or the value was too small.
IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsImprovementWindowed:Marked as improvement because 44.63501654015502 < 45.659438502770534.
IsChangePoint: Marked as a change because one of 4/9/2022 6:06:57 PM, 4/12/2022 5:02:33 PM falls between 4/4/2022 4:14:58 AM and 4/12/2022 5:02:33 PM.
IsImprovementStdDev: Marked as improvement because 34.99580545749906 (T) = (0 -44.66082144945497) / Math.Sqrt((0.3745279339203872 / (299)) + (0.10981773898775478 / (12))) is greater than 1.9676708853560316 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (12) - 2, .975) and 0.07401110800436475 = (48.230407335885715 - 44.66082144945497) / 48.230407335885715 is greater than 0.05.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

Docs

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

### Run Information

Architecture	x86
OS	Windows 10.0.18362
Baseline	285b8259af30e255980b1ebfb2ddd60ca291a83a
Compare	0c64bdf3afc1fdc9166ad6c22c1990d3e0a6c509
Diff	Diff

Improvements in System.Globalization.Tests.StringSearch

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
IndexOf_Word_NotFound - Duration of single invocation	668.98 ns	49.11 ns	0.07	0.00	True

Test Report

Repro

git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net6.0 --filter 'System.Globalization.Tests.StringSearch*'

Payloads

Baseline
Compare

Histogram

System.Globalization.Tests.StringSearch.IndexOf_Word_NotFound(Options: (en-US, OrdinalIgnoreCase, False))

Description of detection logic

IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsRegressionBase: Marked as not a regression because the compare was not 5% greater than the baseline, or the value was too small.
IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsImprovementWindowed:Marked as improvement because 49.10615855148156 < 636.6422063735923.
IsChangePoint: Marked as a change because one of 4/9/2022 5:43:54 AM, 4/12/2022 5:02:33 PM falls between 4/4/2022 4:14:58 AM and 4/12/2022 5:02:33 PM.
IsImprovementStdDev: Marked as improvement because 1803.4316183237086 (T) = (0 -49.12551182765844) / Math.Sqrt((31.785052613464053 / (299)) + (0.15713288333333225 / (15))) is greater than 1.9675964973877862 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (15) - 2, .975) and 0.9261730036809689 = (665.4139309063953 - 49.12551182765844) / 665.4139309063953 is greater than 0.05.
IsChangeEdgeDetector: Marked as regression because Edge Detector said so.

Docs

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