RAD Telemetry
RAD Telemetry is a performance profiling and visualization tool for teams investigating application hitches and other performance problems.
What RAD Telemetry is
RAD Telemetry is a performance profiling and visualization tool for teams investigating application hitches and other performance problems. It relates performance to program state, with graphs that artists, designers, testers, and programmers can use to connect what an application is doing with how it performs. It supports programmer-driven instrumentation and sample-based profiling, including using both together. Its visualizer shows lock contention, thread stalls, context switches, and cycles taken by other processes; full-text search and plots help examine values such as memory use over time. Telemetry is a C/C++ library using application markup. RAD says getting started often takes less than 15 minutes and about a dozen lines of code. A client-server design allows live review or saving sessions for later. Pricing is on request; licenses are generally per game and platform, with bulk, per-site, and worldwide enterprise options. Data files can reach multiple gigabytes for long sessions, depending on enabled markup.
Good
- Supports instrumentation and sample-based profiling together
- Shows thread stalls and lock contention
- Plots values such as memory use over time
- Sessions can be reviewed live or saved
- Supports CPU, GPU, and memory profiling
Watch out
- Pricing is available on request
- No alternate-language bindings are provided
- Long sessions can produce multi-gigabyte data files
Who it suits
Telemetry suits development teams that need to investigate performance over time and correlate it with application state. Its graphs are also intended for artists, designers, and testers working alongside programmers.
Verdict
Telemetry combines profiling modes with views of thread behavior, memory, and program state. Teams should account for custom pricing and potentially large session files.
Plans and prices
From RAD Telemetry's own pricing page, checked 2 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Custom Telemetry license | Priced on request | Bulk, per-site, and worldwide enterprise licenses available · Contact RAD for pricing; licenses are generally per game and per platform. |
The facts
Each one read from RAD Telemetry's own pages, with the date it was checked.
What it does
- Data file size
- The maker says uncompressed data files depend on enabled markup and long sessions can reach multiple gigabytes.checked 2 Oct 2026
- Data handling
- Telemetry uses a client-server architecture; the server can run on the developer's machine or another machine, and sessions can be reviewed live or saved for later.checked 2 Oct 2026
- Data visualization
- It offers full-text search and plots for viewing values such as memory use over time.checked 2 Oct 2026
- Integration
- Telemetry is a C/C++ library that uses application markup, and the maker says integration often takes less than 15 minutes and about a dozen lines of code to get started.checked 2 Oct 2026
- Language bindings
- RAD says it does not provide bindings for alternate languages, though it describes the C/C++ library as easy to integrate with most scripting languages.checked 2 Oct 2026
- Profiling modes
- Telemetry supports programmer-driven instrumentation and sample-based profiling, including running both at the same time.checked 2 Oct 2026
- Purpose
- Telemetry visualizes application performance over time and against program state to help teams investigate hitches and performance problems.checked 2 Oct 2026
- Runtime and desktop support
- The maker lists runtime support for Windows, macOS, Linux, iOS, Android, and other platforms; its 64-bit visualizer and command-line server are available for Windows, macOS, and Linux.checked 2 Oct 2026
- Support
- RAD provides a Telemetry support email, and says its product programmers also handle technical support.checked 2 Oct 2026
- Thread analysis
- The visualizer shows lock contention, thread stalls, context switches, and when other processes steal cycles.checked 2 Oct 2026
The company
- Founded
- 1988checked 23 Sep 2026
- Headquarters
- Bellevue, Washington, United Stateschecked 23 Sep 2026
- Maker
- RAD Game Tools is a group within Epic Games based in Bellevue, Washington, and says it has been in business since 1988.checked 2 Oct 2026
- Team use
- Its graphs let artists, designers, and testers correlate application state with performance, alongside programmers.checked 2 Oct 2026
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