valgrind

$ valgrind --tool=callgrind --simulate-cache=yes ./test
$ callgrind_annotate --auto=yes callgrind.out.11015 test.c
--------------------------------------------------------------------------------
-- User-annotated source: test.c
--------------------------------------------------------------------------------
Ir Dr Dw I1mr D1mr D1mw ILmr DLmr DLmw

 .  .  .    .    .    .    .    .    .  #include <stdio.h>
 .  .  .    .    .    .    .    .    .
 3  0  1    1    0    0    1    .    .  int main() {
 .  .  .    .    .    .    .    .    .    FILE *fh;
 .  .  .    .    .    .    .    .    .
11  4  4    .    .    .    .    .    .    if ((fh = fopen("/etc/issue", "r")) == NULL) {
59,650 14,454 661  107 1,079   49  106  868   42  => /build/buildd/eglibc-2.19/libio/iofopen.c:fopen@@GLIBC_2.2.5 (1x)
752 240 101    0    5    0    0    4    .  => /build/buildd/eglibc-2.19/elf/../sysdeps/x86_64/dl-trampoline.S:_dl_runtime_resolve (1x)
 .  .  .    .    .    .    .    .    .      perror("fopen");
 .  .  .    .    .    .    .    .    .      return 1;
 .  .  .    .    .    .    .    .    .    }
 .  .  .    .    .    .    .    .    .
 8  4  3    0    1    .    .    .    .    fclose(fh);
791 246 101    0   43    7    0    2    .  => /build/buildd/eglibc-2.19/elf/../sysdeps/x86_64/dl-trampoline.S:_dl_runtime_resolve (1x)
1,142 349 185   50   16    0   50    .    .  => /build/buildd/eglibc-2.19/libio/iofclose.c:fclose@@GLIBC_2.2.5 (1x)
 1  .  .    .    .    .    .    .    .    return 0;
 2  2  0    0    1    .    .    .    .  }