Benchmark SerializeSpanLinksInMeta

Author: nhulston

.gitlab-ci.yml

@@ -9,7 +9,7 @@ variables:
   INDEX_FILE: index.txt
   KUBERNETES_SERVICE_ACCOUNT_OVERWRITE: dd-trace-go
   FF_USE_LEGACY_KUBERNETES_EXECUTION_STRATEGY: "true"
-  BENCHMARK_TARGETS: "BenchmarkStartRequestSpan|BenchmarkHttpServeTrace|BenchmarkTracerAddSpans|BenchmarkStartSpan|BenchmarkSingleSpanRetention|BenchmarkOTelApiWithCustomTags|BenchmarkInjectW3C|BenchmarkExtractW3C|BenchmarkPartialFlushing|BenchmarkGraphQL|BenchmarkSampleWAFContext|BenchmarkCaptureStackTrace|BenchmarkSetTagString|BenchmarkSetTagStringPtr|BenchmarkSetTagMetric|BenchmarkSetTagStringer"
+  BENCHMARK_TARGETS: "BenchmarkStartRequestSpan|BenchmarkHttpServeTrace|BenchmarkTracerAddSpans|BenchmarkStartSpan|BenchmarkSingleSpanRetention|BenchmarkOTelApiWithCustomTags|BenchmarkInjectW3C|BenchmarkExtractW3C|BenchmarkPartialFlushing|BenchmarkGraphQL|BenchmarkSampleWAFContext|BenchmarkCaptureStackTrace|BenchmarkSetTagString|BenchmarkSetTagStringPtr|BenchmarkSetTagMetric|BenchmarkSetTagStringer|BenchmarkSerializeSpanLinksInMeta"
 
 include:
   - ".gitlab/benchmarks.yml"

ddtrace/tracer/span_test.go

@@ -1053,6 +1053,27 @@ func BenchmarkSetTagField(b *testing.B) {
 	}
 }
 
+func BenchmarkSerializeSpanLinksInMeta(b *testing.B) {
+	span := newBasicSpan("bench.span")
+
+	span.AddSpanLink(ddtrace.SpanLink{SpanID: 123, TraceID: 456})
+	span.AddSpanLink(ddtrace.SpanLink{SpanID: 789, TraceID: 101})
+
+	// Sample span pointer
+	attributes := map[string]string{
+		"link.kind": "span-pointer",
+		"ptr.dir":   "d",
+		"ptr.hash":  "eb29cb7d923f904f02bd8b3d85e228ed",
+		"ptr.kind":  "aws.s3.object",
+	}
+	span.AddSpanLink(ddtrace.SpanLink{TraceID: 0, SpanID: 0, Attributes: attributes})
+
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		span.serializeSpanLinksInMeta()
+	}
+}
+
 type boomError struct{}
 
 func (e *boomError) Error() string { return "boom" }