Hysen Labsgo-ftrace
bpf(2)-based ftrace(1) like function call graph for Go
go-ftrace traces Go function calls with eBPF
go-ftrace is a function graph tracer for Go processes built on bpf(2), similar to ftrace(1). It inspects function calls, arguments, and return values on Linux x86-64.
What it can trace
The tool traces specific functions by name, such as main.add, and supports wildcards like main.add* to match several functions at once. It can trace multiple patterns in a single run and can target methods of a named type. With the --fargs and --frets flags you supply register expressions to read arguments at entry and return values at the function return point.
Automatic argument reading
For common Go types, including integers, pointers, strings, slices, interfaces, and pointers to structs, ftrace can derive the --fargs and --frets rules on its own from DWARF debug info. The README shows that a bare command such as sudo ftrace with a type method then fetches receiver and argument data without manual expressions.
Requirements and limits
The README limits support to Linux with bpf(2) and uprobe, on x86-64 little endian hardware. The target must be a non stripped Go ELF executable built in non PIE mode, and it must keep the .symtab and .(z)debug_info sections. A provided Makefile lets you run the example targets to try the tracer quickly.
Editorial conclusion
The tracer is written in C and works on Linux x86-64 against non stripped, non PIE Go binaries that carry their symbol and DWARF sections.
Community notes