Determine program's runtime

kd5pbo · 02-26-2007, 08:04 PM

Is there any way to determine the time it took a program to execute?

I am trying to test a few methods of doing a calculation, and I'd like to find out which is the fastest.

Matir · 02-26-2007, 08:14 PM

Prefix execution of the program with "time".

erklaerbaer · 02-26-2007, 08:26 PM

time, gprof and gcov.

gprof needs profiling (gcc -pg)

gcov needs "-g -fprofile-arcs -ftest-coverage"

Have fun!

daggulasreedhar · 03-14-2007, 02:02 AM

Hi Dear friend...
I want to write a program to find the TOTAL PROGRAM EXECUTION TIME in C.
Note: While executing the program SYSTEM TIME willl change... Even though it has to give the correct out put....
So please send me the way u have done.

Please reply..back.

Thanks & regards
Sreedhar

daggulasreedhar · 03-14-2007, 10:51 AM

Quote:

Originally Posted by Matir

Prefix execution of the program with "time".

hi.. friend

can u explain me in detail by taking an example with small C code

H_TeXMeX_H · 03-14-2007, 02:42 PM

In C ? Well, it's not as easy as you might think. Take a look at the source code for the 'time' program:

ftp://slackware.mirrors.tds.net/pub/...ime-1.7.tar.gz

So, basically you want to re-invent the wheel. 'time' is written in C and it does what you are asking .... what more do you want.