How to measure program execution time?

Is there anything like "time" command (Linux) on AmigaOS 4? I wrote a simple tool that uses gettimeofday() + system() to get some figures but maybe there are better tools already?

Here is the source, very little tested:

In clib2 there are a lot of new functions to measure time.
For example in test_programs/memory/string_benchmark.c you have somthing like:

clock_t begin = clock();
//DO STUFF
clock_t end = clock();
double time_spent = (double) (end - begin) / CLOCKS_PER_SEC;
printf("%lf secs\n", time_spent);

But there are other examples too both for c++ and c

@Capehill

If you test your stuff mostly from the shell you could add this to your shell's tooltypes

This will show the time the last command you started took in the shell window's top bar...i wouldn't miss it, great little helper

NB: adapt the winodw size and position to your liking

edit: oh, you probably looked for something that could be used in code :-/

@Raziel

I was looking for something that works like this:

Shell> time wait 3

Duration 3010 ms.

Shell> time make -f something.make

Duration 10503 ms.

So the purpose is to time random executables or scripts.

Hey guys,

There's a built-in functionality in the Shell to record the
execution time of a preceding command. It's stored in an
environment variable and you can just run this after the
command in question:

echo $_runtime

Does that suffice?

Thanks,

PJS

@Capehill

Then the shell solution i described above should suffice...i just tried your example

> wait 3
and shell output after the execution was
Quote:

edit: or what Paul said

Or go crazy like me and have this line (or elements thereof ) in your Shell-Startup:

prompt "*E[33m%N.%S %R %W [%E] *`C:Date` *n$ *E[31m"

Best regards,

Niels

Thanks all, learned new things again. Seems there is no need to reinvent wheels here.

@Capehill

I use "utility/shell/timer.lha" from OS4Depot.

timer <command> starts <command> and displays how long it took to execute.