Messages in this thread | | | Date | Tue, 5 Mar 2002 19:58:24 -0800 (PST) | From | Davide Libenzi <> | Subject | Re: a faster way to gettimeofday? |
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On Tue, 5 Mar 2002, Ben Greear wrote:
> I have a program that I very often need to calculate the current > time, with milisecond accuracy. I've been using gettimeofday(), > but gprof shows it's taking a significant (10% or so) amount of > time. Is there a faster (and perhaps less portable?) way to get > the time information on x86? My program runs as root, so should > have any permissions it needs to use some backdoor hack if that > helps!
If you're on x86 you can use collect rdtsc samples and convert them to ms. You'll get even more then ms accuracy.
- Davide
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