Section: Linux Programmer's Manual (3)
Return to Main Contents
profil - execution time profile
int profil(u_short *buf, size_t bufsiz, size_t offset, u_int scale);
This routine provides a means to find out in what areas your program
spends most of its time. The argument
bytes of core. Every virtual 10 milliseconds, the user's program counter (PC)
is subtracted and the result is multiplied by
and divided by 65536.
If the resulting value is less than
then the corresponding entry in
is NULL, profiling is disabled.
Zero is always returned.
cannot be used on a program that also uses
True kernel profiling provides more accurate results.
Libc 4.4 contained a kernel patch providing a system call profil.
Similar to a call in SVr4 (but not POSIX.1-2001).
- RETURN VALUE
- CONFORMING TO
- SEE ALSO
linux.jgfs.net manual pages