In the past, several SMTK users have asked about tools to understand performance. Instruments on macos is excellent but if you aren’t having the performance problem on macos, it does you no good. On linux, oprofile is a headache to use.
dnf install perf # for Fedora/RedHat systems npm install speedscope
and then run the executable you want to profile:
perf record --call-graph fp -F 999 /path/to/executable args perf script -i perf.data > profile.txt speedscore
At the end, speedscore opens in your default browser; you click the “Browse” button and select
profile.txt. Then you can see a flamegraph with time on the horizontal axis and the call stack on the vertical axis.