Pernosco

Fast, fun, omniscient debugging.

Record failures anywhere: locally, QA, CI, or in production

Record your x86 Linux program using rr.
Submit those recordings to Pernosco for processing and Pernosco sends you a link to access the debugger that you can use from anywhere.
Once you've captured a recording (e.g. of an intermittent test failure) you don't need to reproduce the bug again.

Rapidly debug recordings using the revolutionary Pernosco omniscient debugger

Pernosco gives you instant access to the full details of any program state at any point in time.
Pernosco visualizes control flow and data flow history so you can quickly track effects back to causes.
Pernosco transcends the limitations of traditional debugger interfaces; but it also integrates traditional debugging approaches like gdb and printf debugging — enhanced with new superpowers.

Share your recordings and debugging state with other developers

Record your debugging progress in the Pernosco notebook.
Loop in other developers to collaborate.
Or, capture recordings of test failures (e.g. from fuzzing) and send Pernosco links directly to other developers for debugging.

Try out Pernosco on some examples: libbcc, Firefox, Chromium JS, Node race condition walkthrough, gdb use-after-free walkthrough

Pernosco is now available to individual developers with a Github account. Every Github user gets 5 free submissions. See our pricing page for additional details.

Pernosco is available to debug Github Actions test failures — free for approved open source projects.

Pernoso is also available for hosted and on-premises deployment for teams and organizations. Contact us for a free trial and pricing. We can adapt to your technology, pricing and business needs.

Pernosco currently targets C, C++, Ada, Rust and V8 JS (e.g. node.js) applications that run on x86 Linux and work with rr.