Alys is a project I’ve been working on-and-off for a few months now, originating from some discussion on the Lucky Discord on finding the source of a memory “leak”. It’s in EARLY ALPHA STATE, but it’s quite easy to plug into an application and generate tracing events, which can then be converted into a custom JSON format or Go’s pprof format (which can be viewed in an interactive web UI via the
Note that it has only been tested on Linux thus far!
As a quick preview, this is what it looks like loading the pprof web UI for tracing data generated from Lucky’s website application:
I would appreciate any feedback and thoughts on real-world usage!
EDIT: Also worth noting this is NOT multithreading-safe! I plan on moving some logic to a separate thread, which will probably improve perf but also make room for preview_mt support.