I assume you're talking about the “nondistro build”? The difference between -g (--call-graph fp) and --call-graph dwarf is large even with perf linked directly

I assume you're talking about the “nondistro build”? The difference between -g (--call-graph fp) and --call-graph dwarf is large even with perf linked directly against binutils, at least in my experience (and it was much, much worse until I got some patches into binutils to make it faster). This is both on record and report. There are also weird bugs with --call-graph dwarf that perf upstream isn't doing anything about, around inlining. It's not perfect by any means.