performance issue

i wish to run a program as fast as i can.

does making it run from the on_chip_memory will speed thing up?

i have tried this thing:

int testTimes(void) __attribute__ ((section(".on_chip_memory")));

int testTimes()

{...}

but i get the next build error:

39 AM - (SEVERE) elf2flash: Boot copier overlaps data in flash[Jul 12, 2005 10]

does anybody knows way?