https://github.com/namhyung/uftrace

aur
    uftrace

https://github.com/namhyung/uftrace/wiki
https://github.com/namhyung/uftrace/wiki/Tutorial

https://github.com/namhyung/uftrace/tree/master/doc
https://github.com/namhyung/uftrace/blob/master/doc/uftrace-dump.md

https://gitter.im/uftrace/uftrace

https://uftrace.github.io/slide/#1
2017
https://www.youtube.com/watch?v=s0B8hV2O8ps
https://github.com/CppCon/CppCon2017/blob/master/Tutorials/Understanding%20the%20Runtime%20Behaviors%20of%20C%2B%2B%20Programs%20Using%20uftrace%20Tool/Understanding%20the%20Runtime%20Behaviors%20of%20C%2B%2B%20Programs%20Using%20uftrace%20Tool%20-%20Honggyu%20Kim%20-%20CppCon%202017.pdf

uftrace
    record
        a.out
    dump
        --chrome > uftrace-dump-chrome.json
            https://github.com/catapult-project/catapult/blob/master/tracing/bin/trace2html
            trace2html uftrace-dump-chrome.json
        --flame-graph | flamegraph.pl > out.svg