Currently on Windows, SPS assigns all unknown offsets the name '???', making it impossible to tell them apart. The mac version represents them as hex addresses like '0xNNNNNNNN'. It'd be great if the Windows SPS code could do the same thing, so that you could at least try to manually identify individual unknown offsets by examining call hierarchies and time spent while you read a profile.
https://github.com/vdjeric/Snappy-Symbolication-Server/commit/3df3d6b01850b288562f3dfc35fef9aa76db1175 Now just waiting on deployment to production environment