The glibc-profile package includes the GNU libc libraries and support
for profiling using the gprof program. Profiling is analyzing a
program's functions to see how much CPU time they use and determining
which functions are calling other functions during execution. To use
gprof to profile a program, your program needs to use the GNU libc
libraries included in glibc-profile (instead of the standard GNU libc
libraries included in the glibc package).
If you are going to use the gprof program to profile a program, you'll
need to install the glibc-profile package.