[Profiler] Generate heap snapshot #7681

chrisnas · 2025-10-21T08:22:21Z

Summary of changes

Allow the generation of heap snapshots that are sent to the backend

Reason for change

For memory leak workflow, we would like to compare the surviving objects count to identify the leaky ones. These heap snapshots will be transformed into class histograms to look like what is generated by Java.

Implementation details

The .NET runtime allows the creation of "gcdump" thanks to dotnet-gcdump tool. Behind the scene, an induced GC is triggered when an event pipe session is created with the right keyword/verbosity. Undocumented events are then emitted by the runtime at the end of the GC - read https://chnasarre.medium.com/net-gcdump-internals-fcce5d327be7?source=friends_link&sk=3225ff119458adafc0e6935951fcc323 for more details.

Test coverage

Test added as needed

Other details

andrewlock

This is just configuration, right? There's no implementation of taking the snapshot here?

dd-trace-dotnet-ci-bot · 2025-10-21T09:07:36Z

Execution-Time Benchmarks Report ⏱️

Execution-time results for samples comparing the following branches/commits:

Execution-time benchmarks measure the whole time it takes to execute a program. And are intended to measure the one-off costs. Cases where the execution time results for the PR are worse than latest master results are shown in red. The following thresholds were used for comparing the execution times:

Welch test with statistical test for significance of 5%
Only results indicating a difference greater than 5% and 5 ms are considered.

Note that these results are based on a single point-in-time result for each branch. For full results, see the dashboard.

Graphs show the p99 interval based on the mean and StdDev of the test run, as well as the mean value of the run (shown as a diamond below the graph).

gantt
    title Execution time (ms) FakeDbCommand (.NET Framework 4.8) 
    dateFormat  X
    axisFormat %s
    todayMarker off
    section Bailout
    This PR (7681) - mean (71ms)  : 70, 73
     .   : milestone, 71,
    master - mean (71ms)  : 70, 73
     .   : milestone, 71,

    section Baseline
    This PR (7681) - mean (68ms)  : 66, 70
     .   : milestone, 68,
    master - mean (68ms)  : 66, 69
     .   : milestone, 68,

    section CallTarget+Inlining+NGEN
    This PR (7681) - mean (1,040ms)  : 999, 1081
     .   : milestone, 1040,
    master - mean (1,039ms)  : 1002, 1077
     .   : milestone, 1039,

gantt
    title Execution time (ms) FakeDbCommand (.NET Core 3.1) 
    dateFormat  X
    axisFormat %s
    todayMarker off
    section Bailout
    This PR (7681) - mean (106ms)  : 104, 107
     .   : milestone, 106,
    master - mean (106ms)  : 104, 107
     .   : milestone, 106,

    section Baseline
    This PR (7681) - mean (105ms)  : 103, 107
     .   : milestone, 105,
    master - mean (105ms)  : 102, 107
     .   : milestone, 105,

    section CallTarget+Inlining+NGEN
    This PR (7681) - mean (743ms)  : 720, 767
     .   : milestone, 743,
    master - mean (742ms)  : 724, 760
     .   : milestone, 742,

gantt
    title Execution time (ms) FakeDbCommand (.NET 6) 
    dateFormat  X
    axisFormat %s
    todayMarker off
    section Bailout
    This PR (7681) - mean (94ms)  : 92, 95
     .   : milestone, 94,
    master - mean (93ms)  : 93, 94
     .   : milestone, 93,

    section Baseline
    This PR (7681) - mean (93ms)  : 91, 95
     .   : milestone, 93,
    master - mean (93ms)  : 91, 95
     .   : milestone, 93,

    section CallTarget+Inlining+NGEN
    This PR (7681) - mean (704ms)  : 679, 729
     .   : milestone, 704,
    master - mean (704ms)  : 670, 738
     .   : milestone, 704,

gantt
    title Execution time (ms) FakeDbCommand (.NET 8) 
    dateFormat  X
    axisFormat %s
    todayMarker off
    section Bailout
    This PR (7681) - mean (92ms)  : 91, 93
     .   : milestone, 92,
    master - mean (92ms)  : 91, 93
     .   : milestone, 92,

    section Baseline
    This PR (7681) - mean (92ms)  : 89, 94
     .   : milestone, 92,
    master - mean (91ms)  : 89, 94
     .   : milestone, 91,

    section CallTarget+Inlining+NGEN
    This PR (7681) - mean (656ms)  : 642, 671
     .   : milestone, 656,
    master - mean (659ms)  : 646, 673
     .   : milestone, 659,

gantt
    title Execution time (ms) HttpMessageHandler (.NET Framework 4.8) 
    dateFormat  X
    axisFormat %s
    todayMarker off
    section Bailout
    This PR (7681) - mean (197ms)  : 192, 201
     .   : milestone, 197,
    master - mean (195ms)  : 193, 198
     .   : milestone, 195,

    section Baseline
    This PR (7681) - mean (192ms)  : 189, 196
     .   : milestone, 192,
    master - mean (193ms)  : 188, 198
     .   : milestone, 193,

    section CallTarget+Inlining+NGEN
    This PR (7681) - mean (1,168ms)  : 1104, 1233
     .   : milestone, 1168,
    master - mean (1,171ms)  : 1105, 1237
     .   : milestone, 1171,

gantt
    title Execution time (ms) HttpMessageHandler (.NET Core 3.1) 
    dateFormat  X
    axisFormat %s
    todayMarker off
    section Bailout
    This PR (7681) - mean (276ms)  : 271, 282
     .   : milestone, 276,
    master - mean (276ms)  : 272, 281
     .   : milestone, 276,

    section Baseline
    This PR (7681) - mean (276ms)  : 272, 280
     .   : milestone, 276,
    master - mean (276ms)  : 271, 280
     .   : milestone, 276,

    section CallTarget+Inlining+NGEN
    This PR (7681) - mean (948ms)  : 908, 989
     .   : milestone, 948,
    master - mean (942ms)  : 906, 978
     .   : milestone, 942,

gantt
    title Execution time (ms) HttpMessageHandler (.NET 6) 
    dateFormat  X
    axisFormat %s
    todayMarker off
    section Bailout
    This PR (7681) - mean (269ms)  : 266, 272
     .   : milestone, 269,
    master - mean (269ms)  : 266, 272
     .   : milestone, 269,

    section Baseline
    This PR (7681) - mean (270ms)  : 265, 275
     .   : milestone, 270,
    master - mean (268ms)  : 264, 273
     .   : milestone, 268,

    section CallTarget+Inlining+NGEN
    This PR (7681) - mean (923ms)  : 881, 966
     .   : milestone, 923,
    master - mean (924ms)  : 874, 974
     .   : milestone, 924,

gantt
    title Execution time (ms) HttpMessageHandler (.NET 8) 
    dateFormat  X
    axisFormat %s
    todayMarker off
    section Bailout
    This PR (7681) - mean (269ms)  : 264, 275
     .   : milestone, 269,
    master - mean (268ms)  : 266, 271
     .   : milestone, 268,

    section Baseline
    This PR (7681) - mean (268ms)  : 264, 271
     .   : milestone, 268,
    master - mean (268ms)  : 264, 273
     .   : milestone, 268,

    section CallTarget+Inlining+NGEN
    This PR (7681) - mean (853ms)  : 831, 874
     .   : milestone, 853,
    master - mean (853ms)  : 836, 870
     .   : milestone, 853,

pr-commenter · 2025-10-24T12:39:44Z

Benchmarks

Benchmarks Report for benchmark platform 🐌

Benchmarks for #7681 compared to master:

2 benchmarks are slower, with geometric mean 1.530
5 benchmarks have fewer allocations
5 benchmarks have more allocations

The following thresholds were used for comparing the benchmark speeds:

Mann–Whitney U test with statistical test for significance of 5%
Only results indicating a difference greater than 10% and 0.3 ns are considered.

Allocation changes below 0.5% are ignored.

Benchmark details

Benchmarks.Trace.ActivityBenchmark - Same speed ✔️ More allocations ⚠️

More allocations ⚠️ in #7681

Benchmark	Base Allocated	Diff Allocated	Change	Change %
Benchmarks.Trace.ActivityBenchmark.StartStopWithChild‑net472	5.99 KB	6.06 KB	71 B	1.18%

Fewer allocations 🎉 in #7681

Benchmark	Base Allocated	Diff Allocated	Change	Change %
Benchmarks.Trace.ActivityBenchmark.StartStopWithChild‑netcoreapp3.1	5.74 KB	5.71 KB	-32 B	-0.56%

Raw results

Branch	Method	Toolchain	Mean	StdError	StdDev	Gen 0	Gen 1	Gen 2	Allocated
master	`StartStopWithChild`	net6.0	10.2μs	57ns	369ns	0	0	0	5.5 KB
master	`StartStopWithChild`	netcoreapp3.1	13.5μs	71ns	348ns	0	0	0	5.74 KB
master	`StartStopWithChild`	net472	22.2μs	115ns	693ns	0.965	0.429	0.107	5.99 KB
#7681	`StartStopWithChild`	net6.0	10.7μs	55.3ns	265ns	0	0	0	5.5 KB
#7681	`StartStopWithChild`	netcoreapp3.1	13.6μs	70.3ns	337ns	0	0	0	5.71 KB
#7681	`StartStopWithChild`	net472	22.1μs	90.4ns	350ns	1.02	0.342	0.114	6.06 KB

Benchmarks.Trace.AgentWriterBenchmark - Same speed ✔️ Same allocations ✔️

Raw results

Branch	Method	Toolchain	Mean	StdError	StdDev	Allocated
master	`WriteAndFlushEnrichedTraces`	net6.0	929μs	95.7ns	358ns	2.71 KB
master	`WriteAndFlushEnrichedTraces`	netcoreapp3.1	1.04ms	313ns	1.21μs	2.7 KB
master	`WriteAndFlushEnrichedTraces`	net472	1.21ms	547ns	2.05μs	3.31 KB
#7681	`WriteAndFlushEnrichedTraces`	net6.0	970μs	958ns	3.59μs	2.71 KB
#7681	`WriteAndFlushEnrichedTraces`	netcoreapp3.1	1.04ms	86.3ns	334ns	2.7 KB
#7681	`WriteAndFlushEnrichedTraces`	net472	1.2ms	2.2μs	8.54μs	3.31 KB

Benchmarks.Trace.Asm.AppSecBodyBenchmark - Unknown 🤷 Same allocations ✔️

Raw results

Branch	Method	Toolchain	Mean	StdError	StdDev	Gen 0	Gen 1	Gen 2	Allocated
master	`AllCycleSimpleBody`	net6.0	N/A	N/A	N/A	NaN	NaN	NaN	0 b
master	`AllCycleSimpleBody`	netcoreapp3.1	N/A	N/A	N/A	NaN	NaN	NaN	0 b
master	`AllCycleSimpleBody`	net472	N/A	N/A	N/A	NaN	NaN	NaN	0 b
master	`AllCycleMoreComplexBody`	net6.0	N/A	N/A	N/A	NaN	NaN	NaN	0 b
master	`AllCycleMoreComplexBody`	netcoreapp3.1	N/A	N/A	N/A	NaN	NaN	NaN	0 b
master	`AllCycleMoreComplexBody`	net472	N/A	N/A	N/A	NaN	NaN	NaN	0 b
master	`ObjectExtractorSimpleBody`	net6.0	321ns	1.6ns	7.15ns	0	0	0	280 B
master	`ObjectExtractorSimpleBody`	netcoreapp3.1	389ns	2.23ns	15.4ns	0	0	0	272 B
master	`ObjectExtractorSimpleBody`	net472	299ns	0.0415ns	0.144ns	0.0436	0	0	281 B
master	`ObjectExtractorMoreComplexBody`	net6.0	6.4μs	3.22ns	12.5ns	0	0	0	3.78 KB
master	`ObjectExtractorMoreComplexBody`	netcoreapp3.1	7.86μs	34.1ns	132ns	0	0	0	3.69 KB
master	`ObjectExtractorMoreComplexBody`	net472	6.64μs	3.41ns	13.2ns	0.599	0	0	3.8 KB
#7681	`AllCycleSimpleBody`	net6.0	N/A	N/A	N/A	NaN	NaN	NaN	0 b
#7681	`AllCycleSimpleBody`	netcoreapp3.1	N/A	N/A	N/A	NaN	NaN	NaN	0 b
#7681	`AllCycleSimpleBody`	net472	N/A	N/A	N/A	NaN	NaN	NaN	0 b
#7681	`AllCycleMoreComplexBody`	net6.0	N/A	N/A	N/A	NaN	NaN	NaN	0 b
#7681	`AllCycleMoreComplexBody`	netcoreapp3.1	N/A	N/A	N/A	NaN	NaN	NaN	0 b
#7681	`AllCycleMoreComplexBody`	net472	N/A	N/A	N/A	NaN	NaN	NaN	0 b
#7681	`ObjectExtractorSimpleBody`	net6.0	321ns	1.68ns	8.75ns	0	0	0	280 B
#7681	`ObjectExtractorSimpleBody`	netcoreapp3.1	402ns	1.65ns	5.97ns	0	0	0	272 B
#7681	`ObjectExtractorSimpleBody`	net472	297ns	0.0234ns	0.0843ns	0.0434	0	0	281 B
#7681	`ObjectExtractorMoreComplexBody`	net6.0	6.37μs	28.6ns	111ns	0	0	0	3.78 KB
#7681	`ObjectExtractorMoreComplexBody`	netcoreapp3.1	7.84μs	6.22ns	24.1ns	0	0	0	3.69 KB
#7681	`ObjectExtractorMoreComplexBody`	net472	6.66μs	0.735ns	2.55ns	0.6	0	0	3.8 KB

Benchmarks.Trace.Asm.AppSecEncoderBenchmark - Same speed ✔️ Same allocations ✔️

Raw results

Branch	Method	Toolchain	Mean	StdError	StdDev	Gen 0	Allocated
master	`EncodeArgs`	net6.0	76μs	313ns	1.21μs	0	32.4 KB
master	`EncodeArgs`	netcoreapp3.1	96.6μs	185ns	715ns	0	32.4 KB
master	`EncodeArgs`	net472	110μs	9.84ns	35.5ns	4.95	32.51 KB
master	`EncodeLegacyArgs`	net6.0	142μs	216ns	838ns	0	2.14 KB
master	`EncodeLegacyArgs`	netcoreapp3.1	198μs	162ns	586ns	0	2.14 KB
master	`EncodeLegacyArgs`	net472	261μs	38.3ns	148ns	0	2.16 KB
#7681	`EncodeArgs`	net6.0	76.8μs	164ns	613ns	0	32.4 KB
#7681	`EncodeArgs`	netcoreapp3.1	97.2μs	265ns	1.03μs	0	32.4 KB
#7681	`EncodeArgs`	net472	109μs	12.9ns	50.1ns	4.93	32.5 KB
#7681	`EncodeLegacyArgs`	net6.0	143μs	69.6ns	251ns	0	2.15 KB
#7681	`EncodeLegacyArgs`	netcoreapp3.1	201μs	514ns	1.99μs	0	2.14 KB
#7681	`EncodeLegacyArgs`	net472	269μs	86.6ns	335ns	0	2.16 KB

Benchmarks.Trace.Asm.AppSecWafBenchmark - Slower ⚠️ More allocations ⚠️

Slower ⚠️ in #7681

Benchmark	diff/base	Base Median (ns)	Diff Median (ns)	Modality
Benchmarks.Trace.Asm.AppSecWafBenchmark.RunWafRealisticBenchmark‑netcoreapp3.1	2.053	418,882.19	859,782.00

More allocations ⚠️ in #7681

Benchmark	Base Allocated	Diff Allocated	Change	Change %
Benchmarks.Trace.Asm.AppSecWafBenchmark.RunWafRealisticBenchmark‑netcoreapp3.1	4.48 KB	4.7 KB	220 B	4.91%

Raw results

Branch	Method	Toolchain	Mean	StdError	StdDev	Allocated
master	`RunWafRealisticBenchmark`	net6.0	393μs	76.7ns	297ns	4.55 KB
master	`RunWafRealisticBenchmark`	netcoreapp3.1	419μs	104ns	360ns	4.48 KB
master	`RunWafRealisticBenchmark`	net472	432μs	64.3ns	249ns	4.66 KB
master	`RunWafRealisticBenchmarkWithAttack`	net6.0	285μs	58.9ns	220ns	2.24 KB
master	`RunWafRealisticBenchmarkWithAttack`	netcoreapp3.1	669μs	13.6μs	136μs	2.22 KB
master	`RunWafRealisticBenchmarkWithAttack`	net472	311μs	26ns	97.3ns	2.29 KB
#7681	`RunWafRealisticBenchmark`	net6.0	399μs	119ns	462ns	4.55 KB
#7681	`RunWafRealisticBenchmark`	netcoreapp3.1	857μs	2.22μs	8.61μs	4.7 KB
#7681	`RunWafRealisticBenchmark`	net472	429μs	83.6ns	313ns	4.66 KB
#7681	`RunWafRealisticBenchmarkWithAttack`	net6.0	291μs	56.5ns	212ns	2.24 KB
#7681	`RunWafRealisticBenchmarkWithAttack`	netcoreapp3.1	674μs	14.8μs	148μs	2.22 KB
#7681	`RunWafRealisticBenchmarkWithAttack`	net472	311μs	23.8ns	89ns	2.29 KB

Benchmarks.Trace.AspNetCoreBenchmark - Same speed ✔️ Same allocations ✔️

Raw results

Branch	Method	Toolchain	Mean	StdError	StdDev	Allocated
master	`SendRequest`	net6.0	60.7μs	44.3ns	154ns	14.52 KB
master	`SendRequest`	netcoreapp3.1	71.9μs	91.1ns	341ns	17.42 KB
master	`SendRequest`	net472	0.00734ns	0.00232ns	0.00867ns	0 b
#7681	`SendRequest`	net6.0	61.1μs	39ns	146ns	14.52 KB
#7681	`SendRequest`	netcoreapp3.1	74.3μs	132ns	493ns	17.42 KB
#7681	`SendRequest`	net472	0.0027ns	0.00116ns	0.00449ns	0 b

Benchmarks.Trace.CharSliceBenchmark - Slower ⚠️ More allocations ⚠️

Slower ⚠️ in #7681

Benchmark	diff/base	Base Median (ns)	Diff Median (ns)	Modality
Benchmarks.Trace.CharSliceBenchmark.OptimizedCharSliceWithPool‑net6.0	1.140	836,808.75	954,097.77

More allocations ⚠️ in #7681

Benchmark	Base Allocated	Diff Allocated	Change	Change %
Benchmarks.Trace.CharSliceBenchmark.OptimizedCharSlice‑net6.0	2 B	7 B	5 B	250.00%

Fewer allocations 🎉 in #7681

Benchmark	Base Allocated	Diff Allocated	Change	Change %
Benchmarks.Trace.CharSliceBenchmark.OptimizedCharSlice‑net472	73 B	0 b	-73 B	-100.00%
Benchmarks.Trace.CharSliceBenchmark.OptimizedCharSliceWithPool‑net472	47 B	0 b	-47 B	-100.00%

Raw results

Branch	Method	Toolchain	Mean	StdError	StdDev	Gen 0	Allocated
master	`OriginalCharSlice`	net6.0	1.93ms	222ns	831ns	0	640.01 KB
master	`OriginalCharSlice`	netcoreapp3.1	2.06ms	5.87μs	21.9μs	0	640 KB
master	`OriginalCharSlice`	net472	2.69ms	169ns	611ns	100	641.95 KB
master	`OptimizedCharSlice`	net6.0	1.42ms	238ns	892ns	0	2 B
master	`OptimizedCharSlice`	netcoreapp3.1	1.65ms	325ns	1.26μs	0	1 B
master	`OptimizedCharSlice`	net472	2ms	242ns	936ns	0	73 B
master	`OptimizedCharSliceWithPool`	net6.0	837μs	25.4ns	98.3ns	0	3 B
master	`OptimizedCharSliceWithPool`	netcoreapp3.1	837μs	58ns	225ns	0	0 b
master	`OptimizedCharSliceWithPool`	net472	1.18ms	141ns	545ns	0	47 B
#7681	`OriginalCharSlice`	net6.0	1.91ms	281ns	1.05μs	0	640.01 KB
#7681	`OriginalCharSlice`	netcoreapp3.1	2.11ms	7.16μs	33.6μs	0	640 KB
#7681	`OriginalCharSlice`	net472	2.62ms	90.3ns	338ns	100	641.95 KB
#7681	`OptimizedCharSlice`	net6.0	1.34ms	212ns	791ns	0	7 B
#7681	`OptimizedCharSlice`	netcoreapp3.1	1.72ms	429ns	1.66μs	0	1 B
#7681	`OptimizedCharSlice`	net472	1.91ms	162ns	607ns	0	0 b
#7681	`OptimizedCharSliceWithPool`	net6.0	954μs	30ns	108ns	0	3 B
#7681	`OptimizedCharSliceWithPool`	netcoreapp3.1	823μs	211ns	819ns	0	0 b
#7681	`OptimizedCharSliceWithPool`	net472	1.13ms	80.6ns	312ns	0	0 b

Benchmarks.Trace.CIVisibilityProtocolWriterBenchmark - Same speed ✔️ More allocations ⚠️

More allocations ⚠️ in #7681

Benchmark	Base Allocated	Diff Allocated	Change	Change %
Benchmarks.Trace.CIVisibilityProtocolWriterBenchmark.WriteAndFlushEnrichedTraces‑net472	55.75 KB	56.15 KB	403 B	0.72%

Fewer allocations 🎉 in #7681

Benchmark	Base Allocated	Diff Allocated	Change	Change %
Benchmarks.Trace.CIVisibilityProtocolWriterBenchmark.WriteAndFlushEnrichedTraces‑netcoreapp3.1	43.03 KB	41.93 KB	-1.1 KB	-2.56%

Raw results

Branch	Method	Toolchain	Mean	StdError	StdDev	Gen 0	Allocated
master	`WriteAndFlushEnrichedTraces`	net6.0	671μs	2.56μs	9.91μs	0	41.79 KB
master	`WriteAndFlushEnrichedTraces`	netcoreapp3.1	827μs	3.22μs	12.5μs	0	43.03 KB
master	`WriteAndFlushEnrichedTraces`	net472	918μs	4.43μs	17.7μs	4.46	55.75 KB
#7681	`WriteAndFlushEnrichedTraces`	net6.0	686μs	1.98μs	7.68μs	0	41.76 KB
#7681	`WriteAndFlushEnrichedTraces`	netcoreapp3.1	751μs	878ns	3.4μs	0	41.93 KB
#7681	`WriteAndFlushEnrichedTraces`	net472	897μs	2.65μs	10.3μs	8.33	56.15 KB

Benchmarks.Trace.DbCommandBenchmark - Same speed ✔️ Same allocations ✔️

Raw results

Branch	Method	Toolchain	Mean	StdError	StdDev	Gen 0	Gen 1	Allocated
master	`ExecuteNonQuery`	net6.0	1.9μs	2.59ns	8.96ns	0	0	1.02 KB
master	`ExecuteNonQuery`	netcoreapp3.1	2.63μs	2.77ns	10.7ns	0	0	1.02 KB
master	`ExecuteNonQuery`	net472	2.91μs	3.82ns	14.8ns	0.147	0.0147	987 B
#7681	`ExecuteNonQuery`	net6.0	1.95μs	6.98ns	26.1ns	0	0	1.02 KB
#7681	`ExecuteNonQuery`	netcoreapp3.1	2.62μs	9.19ns	35.6ns	0	0	1.02 KB
#7681	`ExecuteNonQuery`	net472	2.88μs	4.22ns	15.8ns	0.156	0.0142	987 B

Benchmarks.Trace.ElasticsearchBenchmark - Same speed ✔️ Same allocations ✔️

Raw results

Branch	Method	Toolchain	Mean	StdError	StdDev	Gen 0	Allocated
master	`CallElasticsearch`	net6.0	1.72μs	0.672ns	2.6ns	0	1.03 KB
master	`CallElasticsearch`	netcoreapp3.1	2.15μs	10.7ns	45.2ns	0	1.03 KB
master	`CallElasticsearch`	net472	3.66μs	2.86ns	11.1ns	0.163	1.04 KB
master	`CallElasticsearchAsync`	net6.0	1.85μs	10ns	52.1ns	0	1.01 KB
master	`CallElasticsearchAsync`	netcoreapp3.1	2.34μs	11.6ns	49.1ns	0	1.08 KB
master	`CallElasticsearchAsync`	net472	3.62μs	1.63ns	6.32ns	0.163	1.1 KB
#7681	`CallElasticsearch`	net6.0	1.72μs	4.97ns	17.9ns	0	1.03 KB
#7681	`CallElasticsearch`	netcoreapp3.1	2.3μs	10.5ns	42.1ns	0	1.03 KB
#7681	`CallElasticsearch`	net472	3.57μs	2.1ns	7.84ns	0.161	1.04 KB
#7681	`CallElasticsearchAsync`	net6.0	1.84μs	7.22ns	28ns	0	1.01 KB
#7681	`CallElasticsearchAsync`	netcoreapp3.1	2.42μs	6.61ns	25.6ns	0	1.08 KB
#7681	`CallElasticsearchAsync`	net472	3.69μs	2.15ns	8.31ns	0.166	1.1 KB

Benchmarks.Trace.GraphQLBenchmark - Same speed ✔️ Same allocations ✔️

Raw results

Branch	Method	Toolchain	Mean	StdError	StdDev	Gen 0	Allocated
master	`ExecuteAsync`	net6.0	1.87μs	9.28ns	39.4ns	0	952 B
master	`ExecuteAsync`	netcoreapp3.1	2.5μs	8.47ns	31.7ns	0	952 B
master	`ExecuteAsync`	net472	2.64μs	3.26ns	12.6ns	0.144	915 B
#7681	`ExecuteAsync`	net6.0	1.96μs	7.97ns	28.7ns	0	952 B
#7681	`ExecuteAsync`	netcoreapp3.1	2.46μs	2.93ns	11.3ns	0	952 B
#7681	`ExecuteAsync`	net472	2.64μs	5.69ns	22ns	0.144	915 B

Benchmarks.Trace.HttpClientBenchmark - Same speed ✔️ Same allocations ✔️

Raw results

Branch	Method	Toolchain	Mean	StdError	StdDev	Gen 0	Allocated
master	`SendAsync`	net6.0	6.85μs	4.95ns	19.2ns	0	2.36 KB
master	`SendAsync`	netcoreapp3.1	8.68μs	2.06ns	7.13ns	0	2.9 KB
master	`SendAsync`	net472	12.2μs	12.7ns	49.3ns	0.484	3.18 KB
#7681	`SendAsync`	net6.0	6.82μs	10.5ns	37.9ns	0	2.36 KB
#7681	`SendAsync`	netcoreapp3.1	8.59μs	21.5ns	83.3ns	0	2.9 KB
#7681	`SendAsync`	net472	12.1μs	6.81ns	26.4ns	0.484	3.18 KB

Benchmarks.Trace.Iast.StringAspectsBenchmark - Same speed ✔️ More allocations ⚠️

More allocations ⚠️ in #7681

Benchmark	Base Allocated	Diff Allocated	Change	Change %
Benchmarks.Trace.Iast.StringAspectsBenchmark.StringConcatAspectBenchmark‑net472	278.53 KB	286.72 KB	8.19 KB	2.94%

Fewer allocations 🎉 in #7681

Benchmark	Base Allocated	Diff Allocated	Change	Change %
Benchmarks.Trace.Iast.StringAspectsBenchmark.StringConcatAspectBenchmark‑netcoreapp3.1	271.96 KB	255.82 KB	-16.14 KB	-5.93%

Raw results

Branch	Method	Toolchain	Mean	StdError	StdDev	Allocated
master	`StringConcatBenchmark`	net6.0	49.1μs	264ns	2.06μs	44.25 KB
master	`StringConcatBenchmark`	netcoreapp3.1	47.9μs	267ns	1.87μs	42.74 KB
master	`StringConcatBenchmark`	net472	56.5μs	255ns	919ns	57.34 KB
master	`StringConcatAspectBenchmark`	net6.0	475μs	1.69μs	6.08μs	278.98 KB
master	`StringConcatAspectBenchmark`	netcoreapp3.1	508μs	2.19μs	9.79μs	271.96 KB
master	`StringConcatAspectBenchmark`	net472	403μs	1.9μs	13.7μs	278.53 KB
#7681	`StringConcatBenchmark`	net6.0	46.6μs	274ns	2.53μs	44.06 KB
#7681	`StringConcatBenchmark`	netcoreapp3.1	48.7μs	256ns	1.2μs	42.64 KB
#7681	`StringConcatBenchmark`	net472	57.2μs	109ns	379ns	57.34 KB
#7681	`StringConcatAspectBenchmark`	net6.0	487μs	1.98μs	7.15μs	279.47 KB
#7681	`StringConcatAspectBenchmark`	netcoreapp3.1	504μs	1.06μs	3.66μs	255.82 KB
#7681	`StringConcatAspectBenchmark`	net472	406μs	1.99μs	8.7μs	286.72 KB

Benchmarks.Trace.ILoggerBenchmark - Same speed ✔️ Same allocations ✔️

Raw results

Branch	Method	Toolchain	Mean	StdError	StdDev	Gen 0	Allocated
master	`EnrichedLog`	net6.0	2.67μs	5.91ns	22.1ns	0	1.7 KB
master	`EnrichedLog`	netcoreapp3.1	3.61μs	18ns	80.6ns	0	1.7 KB
master	`EnrichedLog`	net472	4.01μs	5.21ns	19.5ns	0.24	1.64 KB
#7681	`EnrichedLog`	net6.0	2.62μs	0.456ns	1.77ns	0	1.7 KB
#7681	`EnrichedLog`	netcoreapp3.1	3.57μs	16.2ns	64.8ns	0	1.7 KB
#7681	`EnrichedLog`	net472	4.04μs	4.01ns	15.5ns	0.243	1.64 KB

Benchmarks.Trace.Log4netBenchmark - Same speed ✔️ Same allocations ✔️

Raw results

Branch	Method	Toolchain	Mean	StdError	StdDev	Allocated
master	`EnrichedLog`	net6.0	123μs	82.3ns	308ns	4.31 KB
master	`EnrichedLog`	netcoreapp3.1	127μs	249ns	864ns	4.31 KB
master	`EnrichedLog`	net472	165μs	37.5ns	135ns	4.51 KB
#7681	`EnrichedLog`	net6.0	127μs	355ns	1.33μs	4.31 KB
#7681	`EnrichedLog`	netcoreapp3.1	129μs	107ns	414ns	4.31 KB
#7681	`EnrichedLog`	net472	167μs	28.8ns	112ns	4.52 KB

Benchmarks.Trace.NLogBenchmark - Same speed ✔️ Same allocations ✔️

Raw results

Branch	Method	Toolchain	Mean	StdError	StdDev	Gen 0	Allocated
master	`EnrichedLog`	net6.0	4.9μs	18.4ns	71.1ns	0	2.26 KB
master	`EnrichedLog`	netcoreapp3.1	6.73μs	22.3ns	83.6ns	0	2.26 KB
master	`EnrichedLog`	net472	7.62μs	6.22ns	24.1ns	0.305	2.08 KB
#7681	`EnrichedLog`	net6.0	5.07μs	3.99ns	14.9ns	0	2.26 KB
#7681	`EnrichedLog`	netcoreapp3.1	6.98μs	23.8ns	92.1ns	0	2.26 KB
#7681	`EnrichedLog`	net472	7.56μs	6.01ns	22.5ns	0.302	2.08 KB

Benchmarks.Trace.RedisBenchmark - Same speed ✔️ Same allocations ✔️

Raw results

Branch	Method	Toolchain	Mean	StdError	StdDev	Gen 0	Allocated
master	`SendReceive`	net6.0	1.96μs	10.2ns	50.1ns	0	1.2 KB
master	`SendReceive`	netcoreapp3.1	2.66μs	9.2ns	35.6ns	0	1.2 KB
master	`SendReceive`	net472	3.13μs	9.52ns	36.9ns	0.188	1.2 KB
#7681	`SendReceive`	net6.0	1.97μs	9.79ns	44.9ns	0	1.2 KB
#7681	`SendReceive`	netcoreapp3.1	2.58μs	6.76ns	26.2ns	0	1.2 KB
#7681	`SendReceive`	net472	3.16μs	3.88ns	15ns	0.191	1.2 KB

Benchmarks.Trace.SerilogBenchmark - Same speed ✔️ Same allocations ✔️

Raw results

Branch	Method	Toolchain	Mean	StdError	StdDev	Gen 0	Allocated
master	`EnrichedLog`	net6.0	4.28μs	7.04ns	27.3ns	0	1.58 KB
master	`EnrichedLog`	netcoreapp3.1	5.57μs	17.9ns	69.2ns	0	1.63 KB
master	`EnrichedLog`	net472	6.53μs	12.4ns	48ns	0.291	2.03 KB
#7681	`EnrichedLog`	net6.0	4.33μs	17.3ns	67ns	0	1.58 KB
#7681	`EnrichedLog`	netcoreapp3.1	5.57μs	6.78ns	26.3ns	0	1.63 KB
#7681	`EnrichedLog`	net472	6.85μs	6.13ns	23.7ns	0.309	2.03 KB

Benchmarks.Trace.SpanBenchmark - Same speed ✔️ Same allocations ✔️

Raw results

Branch	Method	Toolchain	Mean	StdError	StdDev	Gen 0	Allocated
master	`StartFinishSpan`	net6.0	793ns	1.61ns	6.24ns	0	576 B
master	`StartFinishSpan`	netcoreapp3.1	949ns	4.89ns	21.9ns	0	576 B
master	`StartFinishSpan`	net472	920ns	0.473ns	1.83ns	0.0877	578 B
master	`StartFinishScope`	net6.0	924ns	4.7ns	21.6ns	0	696 B
master	`StartFinishScope`	netcoreapp3.1	1.21μs	2.24ns	8.38ns	0	696 B
master	`StartFinishScope`	net472	1.12μs	0.599ns	2.32ns	0.103	658 B
#7681	`StartFinishSpan`	net6.0	779ns	3.67ns	14.2ns	0	576 B
#7681	`StartFinishSpan`	netcoreapp3.1	942ns	5ns	26.5ns	0	576 B
#7681	`StartFinishSpan`	net472	924ns	1.34ns	5.18ns	0.0877	578 B
#7681	`StartFinishScope`	net6.0	895ns	4.42ns	19.3ns	0	696 B
#7681	`StartFinishScope`	netcoreapp3.1	1.2μs	5.6ns	22.4ns	0	696 B
#7681	`StartFinishScope`	net472	1.11μs	0.758ns	2.94ns	0.101	658 B

Benchmarks.Trace.TraceAnnotationsBenchmark - Same speed ✔️ Same allocations ✔️

Raw results

Branch	Method	Toolchain	Mean	StdError	StdDev	Gen 0	Allocated
master	`RunOnMethodBegin`	net6.0	1.05μs	5.08ns	20.3ns	0	696 B
master	`RunOnMethodBegin`	netcoreapp3.1	1.45μs	6.94ns	30.2ns	0	696 B
master	`RunOnMethodBegin`	net472	1.46μs	1.13ns	4.38ns	0.102	658 B
#7681	`RunOnMethodBegin`	net6.0	1.06μs	5.26ns	21.7ns	0	696 B
#7681	`RunOnMethodBegin`	netcoreapp3.1	1.47μs	0.817ns	3.16ns	0	696 B
#7681	`RunOnMethodBegin`	net472	1.44μs	0.611ns	2.2ns	0.101	658 B

Add heap snapshot configuration

19fbaae

chrisnas requested a review from a team as a code owner October 21, 2025 08:22

github-actions bot added the area:profiler Issues related to the continous-profiler label Oct 21, 2025

andrewlock approved these changes Oct 21, 2025

View reviewed changes

chrisnas added 4 commits October 23, 2025 17:49

Integrate HeapSnapshotManager into the profiler

5a41bdc

Merge remote-tracking branch 'origin' into chrisnas/add_class_histogram

2eb4c54

Parse BulkXXX events received during heap snapshot generation

b16d56f

Merge remote-tracking branch 'origin' into chrisnas/add_class_histogram

9815735

chrisnas added 3 commits October 24, 2025 18:45

Merge remote-tracking branch 'origin' into chrisnas/add_class_histogram

18f5d7b

Just for tests with dotnet-gcdump, allow remote trigger

b708f3f

Merge remote-tracking branch 'origin' into chrisnas/add_class_histogram

e0d00f7

[Profiler] Generate heap snapshot #7681

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[Profiler] Generate heap snapshot #7681

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chrisnas commented Oct 21, 2025

Summary of changes

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dd-trace-dotnet-ci-bot bot commented Oct 21, 2025

Execution-Time Benchmarks Report ⏱️

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Benchmarks

Benchmarks Report for benchmark platform 🐌

Benchmark details

More allocations ⚠️ in #7681

Fewer allocations 🎉 in #7681

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Slower ⚠️ in #7681

More allocations ⚠️ in #7681

Raw results

Raw results

Slower ⚠️ in #7681

More allocations ⚠️ in #7681

Fewer allocations 🎉 in #7681

Raw results

More allocations ⚠️ in #7681

Fewer allocations 🎉 in #7681

Raw results

Raw results

Raw results

Raw results

Raw results

More allocations ⚠️ in #7681

Fewer allocations 🎉 in #7681

Raw results

Raw results

Raw results

Raw results

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Raw results

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pr-commenter bot commented Oct 24, 2025 •

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