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RAD Telemetry
What RAD Telemetry is
RAD Telemetry helps teams investigate application hitches and performance problems by showing performance over time and alongside program state. Its graphs let programmers, artists, designers, and testers connect application activity with performance changes. Teams can use programmer-driven instrumentation, sample-based profiling, or both simultaneously. The 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. Telemetry is a C/C++ library that uses application markup, and RAD says getting started often takes less than 15 minutes and about a dozen lines of code. Its client-server setup can run on the developer’s machine or another machine, with sessions reviewed live or saved for later. Runtime support includes Windows, macOS, Linux, iOS, Android, and other platforms; the 64-bit visualizer and command-line server are available for Windows, macOS, and Linux. Licenses are generally per game and platform, with bulk, per-site, and worldwide enterprise options. Pricing is on request. Long sessions can produce uncompressed data files of multiple gigabytes, depending on enabled markup.
Who it suits
RAD Telemetry suits development teams investigating performance issues across supported platforms. Its graphs can serve programmers as well as artists, designers, and testers who need to relate application state to performance.
What it does well
- Supports instrumentation and sample-based profiling together
- Visualizes lock contention, thread stalls, and context switches
- Sessions can be reviewed live or saved
- Runtime support includes mobile and desktop platforms
- Offers bulk, per-site, and enterprise licenses
What to know first
- No bindings are provided for alternate languages
- Long sessions can produce multi-gigabyte data files
- Pricing is on request
- Visualizer and command-line server are limited to Windows, macOS, and Linux
Limits
RAD says it does not provide bindings for alternate languages. Uncompressed data file size depends on enabled markup, and long sessions can reach multiple gigabytes.
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Custom Telemetry license | Contact RAD for pricing; licenses are generally per game and per platform. · Bulk, per-site, and worldwide enterprise licenses available | On request |
As radgametools.com lists them, read 2 Oct 2026. The maker's own page has the final word.
Getting started
- Visit the RAD Telemetry website.
- Contact RAD for custom license pricing; licenses are generally per game and platform.
- Integrate the C/C++ library using application markup.
- Run the command-line server on Windows, macOS, or Linux, on the developer's machine or another machine.
- Review sessions live or save them for later.
Verdict
Telemetry links application state with performance data and supports both instrumentation and sample-based profiling. Teams should account for potentially large session files and the C/C++ library’s language limits.
Questions
What does RAD Telemetry do?
It visualizes application performance over time and in relation to program state to help teams investigate hitches and performance problems.
What profiling approaches does it support?
Telemetry supports programmer-driven instrumentation and sample-based profiling, including running both at once.
Which platforms are supported?
Runtime support includes Windows, macOS, Linux, iOS, Android, and other platforms. The 64-bit visualizer and command-line server are available for Windows, macOS, and Linux; supported platforms also include Xbox, PlayStation, Nintendo, Google Stadia, and QNX systems.
How is Telemetry licensed?
The custom Telemetry license is priced on request and is generally licensed per game and platform. Bulk, per-site, and worldwide enterprise licenses are available.
Who makes Telemetry?
RAD Game Tools is a group within Epic Games, based in Bellevue, Washington. The maker says it has been in business since 1988.
Facts from RAD Telemetry's own pages
- Data file size
- The maker says uncompressed data files depend on enabled markup and long sessions can reach multiple gigabytes. · radgametools.com, 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. · radgametools.com, 2 Oct 2026
- Data visualization
- It offers full-text search and plots for viewing values such as memory use over time. · radgametools.com, 2 Oct 2026
- Founded
- 1988 · radgametools.com, 23 Sept 2026
- Headquarters
- Bellevue, Washington, United States · radgametools.com, 23 Sept 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. · radgametools.com, 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. · radgametools.com, 2 Oct 2026
- Maker
- RAD Game Tools is a group within Epic Games based in Bellevue, Washington, and says it has been in business since 1988. · radgametools.com, 2 Oct 2026
- Profiling modes
- Telemetry supports programmer-driven instrumentation and sample-based profiling, including running both at the same time. · radgametools.com, 2 Oct 2026
- Purpose
- Telemetry visualizes application performance over time and against program state to help teams investigate hitches and performance problems. · radgametools.com, 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. · radgametools.com, 2 Oct 2026
- Support
- RAD provides a Telemetry support email, and says its product programmers also handle technical support. · radgametools.com, 2 Oct 2026
- Team use
- Its graphs let artists, designers, and testers correlate application state with performance, alongside programmers. · radgametools.com, 2 Oct 2026
- Thread analysis
- The visualizer shows lock contention, thread stalls, context switches, and when other processes steal cycles. · radgametools.com, 2 Oct 2026
Where RAD Telemetry stands on Freedom251
- Game Profiling Software#25 of 25