Comments on: Resolution Problems in clock() http://www.guyrutenberg.com/2007/09/10/resolution-problems-in-clock/ Keeping track of what I do Tue, 07 Feb 2012 23:33:30 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: loopzy http://www.guyrutenberg.com/2007/09/10/resolution-problems-in-clock/comment-page-1/#comment-25853 loopzy Thu, 03 Dec 2009 15:58:23 +0000 http://www.guyrutenberg.com/2007/09/10/resolution-problems-in-clock/#comment-25853 Thanks! I will recommend this to all my friends. Thanks! I will recommend this to all my friends.

]]> By: indy http://www.guyrutenberg.com/2007/09/10/resolution-problems-in-clock/comment-page-1/#comment-180 indy Mon, 01 Oct 2007 12:47:09 +0000 http://www.guyrutenberg.com/2007/09/10/resolution-problems-in-clock/#comment-180 The performance of clock() can be even worse, with some people reporting 50ms, try this example: double freq[ITERATIONS]; for (int i = 0; i (freq, ITERATIONS); double min_freq = Min(freq, ITERATIONS); double max_freq = Max(freq, ITERATIONS); printf("\n\n avg_freq = %.5f\n min_freq = %.5f\n max_freq = %.5f ", avg_freq, min_freq, max_freq); on athlon XP 1.7GHz its: avg_freq = 0.01011 min_freq = 0.01000 max_freq = 0.10000 100ms : ) in the worst case The performance of clock() can be even worse, with some people reporting 50ms, try this example:

double freq[ITERATIONS];

for (int i = 0; i (freq, ITERATIONS);
double min_freq = Min(freq, ITERATIONS);
double max_freq = Max(freq, ITERATIONS);

printf(“\n\n avg_freq = %.5f\n min_freq = %.5f\n max_freq = %.5f “, avg_freq, min_freq, max_freq);

on athlon XP 1.7GHz its:

avg_freq = 0.01011
min_freq = 0.01000
max_freq = 0.10000

100ms : ) in the worst case

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