The command ltrace enables you to trace the library calls of a process. This command is used in a similar fashion to strace. The parameter -c outputs the number and duration of the library calls that have occurred:

$ strace -c find /usr/share/doc
% time     seconds  usecs/call     calls    errors syscall
------ ----------- ----------- --------- --------- ----------------
 86.27    1.071814          30     35327           write
 10.15    0.126092          38      3297           getdents64
  2.33    0.028931           3     10208           lstat64
  0.55    0.006861           2      3122         1 chdir
  0.39    0.004890           3      1567         2 open
[...]
  0.00    0.000003           3         1           uname
  0.00    0.000001           1         1           time
------ ----------- ----------- --------- --------- ----------------
100.00    1.242403                 58269         3 total