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[Propagators] Benchmark W3C tracestate parsing #9033

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[Propagators] Benchmark W3C tracestate parsing #9033

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fc1480a
perf(propagators): benchmark tracestate parsing
MilanGarnier Aug 12, 2026
c191c28
perf(propagators): benchmark dd and ot ordering
MilanGarnier Aug 12, 2026
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63 changes: 63 additions & 0 deletions tracer/test/benchmarks/Benchmarks.Trace/W3CTraceContextPropagatorBenchmark.cs
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Original file line number Diff line number Diff line change
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using BenchmarkDotNet.Attributes;
using Datadog.Trace.Propagators;

namespace Benchmarks.Trace;

[MemoryDiagnoser]
[BenchmarkCategory(Constants.TracerCategory, Constants.RunOnPrs, Constants.RunOnMaster)]
public class W3CTraceContextPropagatorBenchmark
{
private const string SingleVendorTraceState =
"dd=s:2;o:rum;p:0123456789abcdef;t.dm:-4;t.usr.id:12345~";

private const string MultipleVendorsTraceState =
"congo=t61rcWkgMzE,dd=s:2;o:rum;p:0123456789abcdef;t.dm:-4;" +
"t.usr.id:12345~,rojo=00f067aa0ba902b7";

private const string MultipleVendorsWithDatadogFirstTraceState =
"dd=s:2;o:rum;p:0123456789abcdef;t.dm:-4;t.usr.id:12345~," +
"congo=t61rcWkgMzE,rojo=00f067aa0ba902b7";

private const string MultipleVendorsWithOtelTraceState =
"congo=t61rcWkgMzE,dd=s:2;o:rum;p:0123456789abcdef;t.dm:-4;" +
"t.usr.id:12345~,ot=rv:ef284ace7a91e1;th:e6666666666668," +
"rojo=00f067aa0ba902b7";

private const string DatadogAndOtelTraceState =
"dd=s:2;o:rum;p:0123456789abcdef;t.dm:-4;t.usr.id:12345~," +
"ot=rv:ef284ace7a91e1;th:e6666666666668";

private const string OtelAndDatadogTraceState =
"ot=rv:ef284ace7a91e1;th:e6666666666668," +
"dd=s:2;o:rum;p:0123456789abcdef;t.dm:-4;t.usr.id:12345~";

[Benchmark]
public string ParseTraceStateWithSingleVendor()
=> W3CTraceContextPropagator.ParseTraceState(SingleVendorTraceState)
.LastParent;

[Benchmark]
public string ParseTraceStateWithMultipleVendors()
=> W3CTraceContextPropagator.ParseTraceState(MultipleVendorsTraceState)
.LastParent;

[Benchmark]
public string ParseTraceStateWithMultipleVendorsAndDatadogFirst()
=> W3CTraceContextPropagator.ParseTraceState(MultipleVendorsWithDatadogFirstTraceState)
.LastParent;

[Benchmark]
public string ParseTraceStateWithMultipleVendorsAndOtelTraceState()
=> W3CTraceContextPropagator.ParseTraceState(MultipleVendorsWithOtelTraceState)
.LastParent;

[Benchmark]
public string ParseTraceStateWithDatadogBeforeOtel()
=> W3CTraceContextPropagator.ParseTraceState(DatadogAndOtelTraceState)
.LastParent;

[Benchmark]
public string ParseTraceStateWithOtelBeforeDatadog()
=> W3CTraceContextPropagator.ParseTraceState(OtelAndDatadogTraceState)
.LastParent;
}
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