Test frame cache

Author: nsavoire

config/cli_flags.go

@@ -395,6 +395,14 @@ func parseCLIArgs(osArgs []string) (*Arguments, error) {
 				Destination: &args.CollectContext,
 				Sources:     cli.EnvVars("DD_HOST_PROFILING_COLLECT_CONTEXT"),
 			},
+			&cli.IntFlag{
+				Name:        "frame-cache-size",
+				Value:       -1,
+				Hidden:      true,
+				Usage:       "Size of the frame cache.",
+				Destination: &args.FrameCacheSize,
+				Sources:     cli.EnvVars("DD_HOST_PROFILING_FRAME_CACHE_SIZE"),
+			},
 		},
 		Action: func(_ context.Context, cmd *cli.Command) error {
 			args.cmd = cmd

config/config.go

@@ -83,4 +83,5 @@ type Config struct {
 	EnableSplitByService          bool
 	SplitServiceSuffix            string
 	CollectContext                bool
+	FrameCacheSize                int64
 }

go.mod

@@ -180,4 +180,4 @@ require (
 // To update the Datadog/opentelemetry-ebpf-profiler dependency on latest commit on datadog branch, change the following line to:
 // replace go.opentelemetry.io/ebpf-profiler => github.com/DataDog/opentelemetry-ebpf-profiler datadog
 // and run `go mod tidy`
-replace go.opentelemetry.io/ebpf-profiler => github.com/DataDog/opentelemetry-ebpf-profiler v0.0.0-20251119095038-750fb336791a
+replace go.opentelemetry.io/ebpf-profiler => github.com/DataDog/opentelemetry-ebpf-profiler v0.0.0-20251121135054-4e7dcfdb7097

go.sum

@@ -42,8 +42,8 @@ github.com/DataDog/gostackparse v0.7.0 h1:i7dLkXHvYzHV308hnkvVGDL3BR4FWl7IsXNPz/
 github.com/DataDog/gostackparse v0.7.0/go.mod h1:lTfqcJKqS9KnXQGnyQMCugq3u1FP6UZMfWR0aitKFMM=
 github.com/DataDog/jsonapi v0.12.0 h1:N4e9RpmUflcV5hzceltSz8XUpM3PMtQr5C9Bhv0g87s=
 github.com/DataDog/jsonapi v0.12.0/go.mod h1:FUSGF3bwMARlVfXEoFo9R/CVlYYy9BGL4C/Prf6Ke3M=
-github.com/DataDog/opentelemetry-ebpf-profiler v0.0.0-20251119095038-750fb336791a h1:C2u81b7GBx6/oHR7gVINAKmrkTHrgIb03b9Ffr6ZFHM=
-github.com/DataDog/opentelemetry-ebpf-profiler v0.0.0-20251119095038-750fb336791a/go.mod h1:bYhWgro0or2UhzNw7Y8KgdIWhZEmSS0IH74h1Dg+xPU=
+github.com/DataDog/opentelemetry-ebpf-profiler v0.0.0-20251121135054-4e7dcfdb7097 h1:Fni84EqjI3coOLh29M2fW/gXypv+dSUqsAKG4DKQm6Y=
+github.com/DataDog/opentelemetry-ebpf-profiler v0.0.0-20251121135054-4e7dcfdb7097/go.mod h1:bYhWgro0or2UhzNw7Y8KgdIWhZEmSS0IH74h1Dg+xPU=
 github.com/DataDog/opentelemetry-mapping-go/pkg/otlp/attributes v0.27.0 h1:5US5SqqhfkZkg/E64uvn7YmeTwnudJHtlPEH/LOT99w=
 github.com/DataDog/opentelemetry-mapping-go/pkg/otlp/attributes v0.27.0/go.mod h1:VRo4D6rj92AExpVBlq3Gcuol9Nm1bber12KyxRjKGWw=
 github.com/DataDog/sketches-go v1.4.7 h1:eHs5/0i2Sdf20Zkj0udVFWuCrXGRFig2Dcfm5rtcTxc=

runner/runner.go

@@ -289,8 +289,8 @@ func Run(mainCtx context.Context, c *config.Config) ExitCode {
 
 	// Load the eBPF code and map definitions
 	trc, err := tracer.NewTracer(mainCtx, &tracer.Config{
-		ExecutableReporter:     rep,
 		TraceReporter:          rep,
+		ExecutableReporter:     rep,
 		Intervals:              intervals,
 		IncludeTracers:         includeTracers,
 		FilterErrorFrames:      !c.SendErrorFrames,
@@ -303,6 +303,7 @@ func Run(mainCtx context.Context, c *config.Config) ExitCode {
 		ProbabilisticInterval:  c.ProbabilisticInterval,
 		ProbabilisticThreshold: uint(c.ProbabilisticThreshold),
 		IncludeEnvVars:         includeEnvVars,
+		FrameCacheSize:         int(c.FrameCacheSize),
 	})
 	if err != nil {
 		return failure("Failed to load eBPF tracer: %v", err)