I am interested to learn about KVM. I started trace-cmd as follows:
trace-cmd record -p function_graph -g kvm_vcpu_ioctl -o nofuncgraph-irqs qemu-system-x86_64 ***
I analyzed the output file using Kernelshark. It is my first time using it, so I might not know how to use it properly. Anyway I found it hard to find the start and end of function calls.
What I am interested in is something like seeing the functions either as a flamegraph, but I am not interested at timing at all, I am only interested in hierarchy. Or seeing it in a way similar to an IDE where I can collapse those block of functions that I am not interested in.
Is there a way to generate a flamegraph out of the trace-cmd output or a tool to help with visualizing the call graph that is generated?
