open-telemetry/opentelemetry-php

Support Otlp Profiling

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#1,984 opened on Jun 11, 2026

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help wanted

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Description

Otlp-Profiling is now in alpha, and we'd like to see SDKs implement support for it, especially for things that the opentelemetry-ebpf-profiler cannot profile or only with very high overhead, such as heap profiling data.

Bonus for supporting process context and thread context when they're ready.

The profiling working group would welcome questions or input, and feel free to join the fortnightly call. All information about the call is at the top of our running meeting notes.

Contributor guide

Research direction
Familiarize with the OTLP profiling specification and the current PHP SDK's OTLP exporter implementation. Look at other SDKs (e.g., Java) for reference. Identify where to add profiling signal support.
Tech stack
php
Domain
backend
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
Over 1 week
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
PHPOpenTelemetryOTLP
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
35