GTK supports profiling with sysprof. It exports timing information about frameclock phases and various characteristics of GskRenderers in a format that can be displayed by sysprof or GNOME Builder.
A simple way to capture data is to run your application under the
sysprof-cli
wrapper, which will write profiling
data to a file called capture.syscap
.
When launching the application from sysprof, it will set the
SYSPROF_TRACE_FD
environment variable to point
GTK at a file descriptor to write profiling data to.