Unable to (re)symbolificate saved profile data

[loonatick-src]

I have been saving profiles to disk using --output my_profile.json, and after running samply record, the resulting visualization in the local server is symbolificated just fine. But when I reopen the file later from profiler.firefox.com using "load a profile from file", the the stack traces show entirely raw address values, but the session still says "Profile is symboilcated". Clicking on resymbolificate does not help.

I am not sure if this is a samply issue or a firefox profiler issue. Is there a way to explicitly save symbolification information with the sample data or provide symbolification information after loading a profile into the firefox sampler?

Platform: macOS 14.1 23B2073 arm64

[mstange]

To load a saved my_profile.json in the profiler with working symbols, you need to use samply load my_profile.json .

You're not the first person to run into this, it's definitely a rough edge.

[kemingy]

To load a saved my_profile.json in the profiler with working symbols, you need to use samply load my_profile.json .

You're not the first person to run into this, it's definitely a rough edge.

Hi @mstange, thanks for the awesome tool, how can I share the profile with symbolification information to others? I found that if others samply load profile.json, there is no symbolification information. The paths in the file are fixed to my local path.

[mstange]

The easiest way is to upload the profile in the Firefox Profiler UI, with the "Upload Local Profile" button in the top right corner.
If you don't want to upload the profile, you can click that button but then click "Download" in the panel that drops out of it. The downloaded JSON file will contain symbols.