On 02/08/2012 09:12 PM, Richard Cochran wrote:
I think "resolution" does not mean tick duration, but rather the finest timer
unit.
#include <stdio.h>
#include <time.h>
int main (int argc, char *argv[])
{
int i;
struct timespec rs, ts[10];
clock_getres (CLOCK_REALTIME, &rs);
printf ("res: %lus %luns\n", rs.tv_sec, rs.tv_nsec);
for (i = 0; i < 10; i++)
clock_gettime (CLOCK_REALTIME, ts + i);
for (i = 0; i < 10; i++)
printf ("%d: %lus %luns\n", i, ts[i].tv_sec, ts[i].tv_nsec);
return 0;
}
=>
res: 0s 10000000ns
0: 1328779203s 975317500ns
1: 1328779203s 975317900ns
2: 1328779203s 975318200ns
3: 1328779203s 975318400ns
4: 1328779203s 975318600ns
5: 1328779203s 975318800ns
6: 1328779203s 975319000ns
7: 1328779203s 975319300ns
8: 1328779203s 975319500ns
9: 1328779203s 975319600ns
Old Sun Fire 880, SunOS 5.10 Generic_139555-08.
100ns precision with 10ms "finest timer unit"???
Dmitry
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