Resource Attribute Dictionary Benchmark

otlp-bench/.gitignore

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+/internal/otlpbuild/testdata/tmp
+/internal/otlpbuild/testdata/dst
+otlp-bench-results

otlp-bench/README.md

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+# otlp-bench
+
+`otlp-bench` is a tool for comparing different variants for encoding profiling data as OTLP.
+
+For now check [reports/2025-11-27-gh733-resource-attr-dict/README.md]() for more information.

otlp-bench/bench-setup/Dockerfile.custom

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+FROM alpine:3.19 AS certs
+
+RUN apk --update add ca-certificates
+
+
+FROM golang:1.25 AS build-stage
+
+WORKDIR /build
+
+COPY ./builder-manifest.yaml builder-manifest.yaml
+
+RUN --mount=type=cache,target=/root/.cache/go-build GO111MODULE=on go install go.opentelemetry.io/collector/cmd/[email protected]
+RUN --mount=type=cache,target=/root/.cache/go-build builder --config builder-manifest.yaml
+
+
+FROM alpine:3.19
+
+RUN apk --no-cache add ca-certificates util-linux
+
+ARG USER_UID=10001
+RUN adduser -D -u ${USER_UID} otel
+USER ${USER_UID}
+
+COPY --chmod=755 --from=build-stage /build/dist/otelcol-ebpf-profiler-custom /otelcol/otelcol-ebpf-profiler-custom
+
+ENTRYPOINT ["/otelcol/otelcol-ebpf-profiler-custom"]
+CMD ["--config", "/conf/relay.yaml"]
+
+EXPOSE 4317 4318 13133 14250 14268 6831 9411

otlp-bench/bench-setup/README.md

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+# OTLP Profiling Benchmark Setup
+
+This setup captures real-world OTLP profiling data to measure the impact of protocol changes on in-memory and wire size.
+
+## Overview
+
+We run two workloads on a single-node minikube cluster:
+
+- **[OpenTelemetry Demo](https://github.com/open-telemetry/opentelemetry-demo)** (Astronomy Shop): A fictional e-commerce application composed of ~15 microservices written in Go, Java, Python, .NET, Node.js, Rust, PHP, and more. Generates diverse profiling data across different runtimes and frameworks.
+- **[NetBox](https://github.com/netbox-community/netbox)**: A network infrastructure management platform (IPAM/DCIM) built with Django. Runs as a gunicorn WSGI application that spawns multiple worker processes—useful for evaluating profiler behavior with forking Python processes.
+
+A custom OpenTelemetry Collector with the [eBPF profiler](https://github.com/open-telemetry/opentelemetry-ebpf-profiler) captures profiles from all processes on the node and writes them to disk.
+
+## Prerequisites
+
+- Ubuntu 24.04 VM (tested on AWS c6a.8xlarge: 32 vCPUs, 64 GiB)
+- Sudo access
+
+## Setup
+
+### 1. Install dependencies
+
+```bash
+./install.sh
+```
+
+This installs Docker, minikube, kubectl, helm, and configures the system for Kubernetes.
+
+After installation, either log out and back in, or run `newgrp docker` to activate Docker group membership.
+
+### 2. Start the cluster
+
+```bash
+minikube start --driver=none
+```
+
+### 3. Deploy workloads
+
+**OpenTelemetry Demo:**
+
+```bash
+kubectl create namespace otel-demo
+helm repo add open-telemetry https://open-telemetry.github.io/opentelemetry-helm-charts
+helm install otel-demo open-telemetry/opentelemetry-demo -n otel-demo --values k8s/opentelemetry-demo/values.yaml
+```
+
+**NetBox:**
+
+```bash
+kubectl create namespace netbox-bench
+helm install netbox-bench oci://ghcr.io/netbox-community/netbox-chart/netbox -n netbox-bench
+```
+
+NetBox takes ~10 minutes to start (database migrations). Wait for all pods to be ready:
+
+```bash
+kubectl get pods -n netbox-bench -w
+```
+
+Then start the load generator:
+
+```bash
+kubectl apply -f k8s/netbox/load-generator.yaml
+```
+
+### 4. Deploy the collector
+
+Build a custom collector pinned to a specific commit of the eBPF profiler:
+
+```bash
+./build-custom-collector.sh
+```
+
+Deploy it:
+
+```bash
+kubectl create namespace otel
+kubectl apply -f k8s/opentelemetry-collector/
+```
+
+## Output
+
+Profiles are written to `/var/lib/otel-profiles/profiles.proto` in the [file exporter format](https://github.com/open-telemetry/opentelemetry-collector-contrib/tree/main/exporter/fileexporter#file-format).
+
+## Notes
+
+- The collector runs as a DaemonSet with privileged access (required for eBPF).
+- We use a custom Kubernetes manifest because the collector Helm charts don't yet support the profiling distribution.
+- The `builder-manifest.yaml` pins the eBPF profiler to a [specific commit](https://github.com/open-telemetry/opentelemetry-ebpf-profiler/tree/fd60ef3f4a81577e4269bf821b11b38b81fadb52) for reproducibility. It includes [#889](https://github.com/open-telemetry/opentelemetry-ebpf-profiler/pull/889) which makes collector logs more configurable.

otlp-bench/bench-setup/build-custom-collector.sh

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+#!/bin/bash
+set -e
+
+# Configuration
+IMAGE_NAME="otelcol-ebpf-profiler-custom"
+IMAGE_TAG="${IMAGE_TAG:-latest}"
+
+# Verify we're using minikube with driver=none
+if ! kubectl config current-context 2>/dev/null | grep -q "minikube"; then
+    echo "❌ Error: Not using minikube context"
+    echo "This script only supports minikube with driver=none"
+    exit 1
+fi
+
+MINIKUBE_DRIVER=$(minikube profile list -o json 2>/dev/null | grep -o '"Driver":"[^"]*"' | cut -d'"' -f4 || echo "")
+if [ "$MINIKUBE_DRIVER" != "none" ]; then
+    echo "❌ Error: Minikube is using driver: $MINIKUBE_DRIVER"
+    echo "This script only supports minikube with driver=none"
+    echo ""
+    echo "To use driver=none:"
+    echo "  sudo minikube delete"
+    echo "  sudo minikube start --driver=none"
+    exit 1
+fi
+
+echo "Building custom OpenTelemetry Collector..."
+echo "Image: ${IMAGE_NAME}:${IMAGE_TAG}"
+echo "Driver: none (using host Docker daemon)"
+echo ""
+
+# Build with host Docker daemon
+docker build -f Dockerfile.custom -t ${IMAGE_NAME}:${IMAGE_TAG} .
+
+echo ""
+echo "✅ Build complete!"
+echo ""
+echo "Deploy with:"
+echo "  kubectl create namespace otel  # if not exists"
+echo "  kubectl apply -f k8s/opentelemetry-collector/"

otlp-bench/bench-setup/builder-manifest.yaml

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+dist:
+  name: otelcol-ebpf-profiler-custom
+  description: Custom OpenTelemetry Collector with eBPF Profiler
+  version: latest
+  output_path: ./dist
+  otelcol_version: latest
+
+extensions:
+  - gomod: github.com/open-telemetry/opentelemetry-collector-contrib/extension/opampextension v0.139.0
+
+exporters:
+  - gomod: go.opentelemetry.io/collector/exporter/debugexporter v0.139.0
+  - gomod: go.opentelemetry.io/collector/exporter/nopexporter v0.139.0
+  - gomod: go.opentelemetry.io/collector/exporter/otlpexporter v0.139.0
+  - gomod: go.opentelemetry.io/collector/exporter/otlphttpexporter v0.139.0
+  - gomod: github.com/open-telemetry/opentelemetry-collector-contrib/exporter/fileexporter v0.139.0
+
+processors:
+  - gomod: go.opentelemetry.io/collector/processor/batchprocessor v0.139.0
+  - gomod: go.opentelemetry.io/collector/processor/memorylimiterprocessor v0.139.0
+  - gomod: github.com/open-telemetry/opentelemetry-collector-contrib/processor/k8sattributesprocessor v0.139.0
+  - gomod: github.com/open-telemetry/opentelemetry-collector-contrib/processor/resourcedetectionprocessor v0.139.0
+  - gomod: github.com/open-telemetry/opentelemetry-collector-contrib/processor/resourceprocessor v0.139.0
+  - gomod: github.com/open-telemetry/opentelemetry-collector-contrib/processor/transformprocessor v0.139.0
+
+receivers:
+  - gomod: go.opentelemetry.io/ebpf-profiler fd60ef3f4a81577e4269bf821b11b38b81fadb52
+    import: go.opentelemetry.io/ebpf-profiler/collector
+
+providers:
+  - gomod: go.opentelemetry.io/collector/confmap/provider/envprovider v1.45.0
+  - gomod: go.opentelemetry.io/collector/confmap/provider/fileprovider v1.45.0
+  - gomod: go.opentelemetry.io/collector/confmap/provider/httpprovider v1.45.0
+  - gomod: go.opentelemetry.io/collector/confmap/provider/httpsprovider v1.45.0
+  - gomod: go.opentelemetry.io/collector/confmap/provider/yamlprovider v1.45.0
+
+# When adding a replace, add a comment before it to document why it's needed and when it can be removed
+replaces:
+  # see https://github.com/openshift/api/pull/1515
+  - github.com/openshift/api => github.com/openshift/api v0.0.0-20230726162818-81f778f3b3ec