Continuous profiling

What is Grafana Phlare?

Grafana Phlare lets you aggregate continuous profiling data with high availability, multi-tenancy, and durable storage. This helps you get a better understanding of resource usage in your applications down to the line number.

grafana phlare

Grafana Phlare overview

Grafana Phlare is an open source database that provides fast, scalable, highly available, and efficient storage and querying of profiling data.

The idea behind Phlare was sparked during a company-wide hackathon at Grafana Labs. The project was announced in 2022 at ObservabilityCON. The mission for the project is to enable continuous profiling at scale for the open source community, giving developers a better understanding of resource usage of their code. By doing so, it allows users to understand their application performance and optimize their infrastructure spend.

Grafana Labs is proud to lead the development of the Grafana Phlare project. The project natively integrates with Grafana, making it possible for users to correlate their profiling data with metrics, logs, and traces and to use profiles as another key observability signal for their applications.

Introduction to Grafana Phlare


Why use Grafana Phlare for continuous profiling?

Easy to install with just one binary and no additional dependencies — just like Prometheus
Provides durable, long-term storage of your profiling data to help you identify changes and trends over time
Horizontally scalable, distributed architecture means that Phlare can easily be scaled out to handle more incoming profiles
Fully compatible with Grafana so you can correlate profiling data with your existing metrics, logs, and traces
Consistent architecture with Loki, Mimir, and Tempo, which reduces the learning curve and cognitive load for those operating Phlare alongside Grafana Labs’ other databases
Can be run in a highly available configuration to ensure 100% uptime, even during upgrades and machine failure
Multi-tenancy and isolation make it possible to run one database for multiple independent teams or business units
Because Phlare uses object storage, you can store all the history you need without breaking the bank. AWS S3, Google Cloud Storage, Azure blob storage, OpenStack Swift, and any S3-compatible object storage supported

How does Grafana Phlare work for continuous profiling?

how does grafana flare work

Collect profiling data

Grafana Phlare collects CPU and memory profiles from applications that expose pprof endpoints.


Run it easily, without sacrificing scalability or reliability

Get started in minutes by spinning up Phlare as a single process. When you’re ready to collect profiles from more applications or want a high availability setup, just add more machines and horizontally scale it out. Phlare will handle the rest.


Visualize in Grafana

Using Grafana’s Phlare data source, query the data stored in Phlare, slicing and dicing by relevant time ranges and labels. Grafana’s flame graph, histogram, and table views allow you to visualize your profiling data in different ways and build powerful dashboards from it.


Optimize your code

Grafana Phlare helps you identify the slowest and most memory-hungry parts of your code, so that developers are empowered to go in and optimize those areas. This results in:

  • Faster applications
  • More reliable applications and fewer OOM crashes
  • Cost-effective applications that use less CPU and memory

Built on open source, driven by the community

Grafana Phlare combines the best insights from Grafana Labs engineers who use continuous profiling at scale every day to improve the performance and reliability of our applications. We’re excited to share our learnings and work with the open source community on this first-of-its-kind continuous profiling database.

Meet the Grafana Phlare contributors

Work with great people like these

Ready to fire up Phlare in Grafana?