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 :: Mailing Lists

[ILUG] Measuring time

[ILUG] Measuring time

John P. Looney john at antefacto.com
Thu May 24 19:29:44 IST 2001


On Thu, May 24, 2001 at 06:30:32PM +0100, Anthony Harrington mentioned:
> Hello,
> Can anyone tell me a system call for measuring time in nano-seconds ?
> All I can find is gettimeofday() from which I can only obtain seconds 
> and milliseconds.
> Any info. appreciated.
> Anthony

 Your linux box doesn't keep time in nano-seconds. If it did, a 32bit
counter would wrap in 20 minutes.

 What you may find useful however, is usleep() which will sleep for
microseconds. You won't get any nanosecond-accurate time stuff on
something like a PC :(

Kate

-- 
 When I say 'free', I mean 'free': free from bond, of chain or command: 
to go where you will, even to Mordor, Saruman, if you desire. " 
    -- Gandalf, paraphrasing the choice between Free and Non-free software




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