>Well, quite often you need to call time function in a loop. For
>example, you have a loop that accepts network packets, or connections
>and every so often you need to have current system time. The resolution
>of the timer can be specific to application, i.e. it could be seconds,
>milliseconds, or microseconds.a
>
>uint64_t current_time;
>while(1)
>{
> get_network_data();
> current_time = update_current_time();
> ...
> use_current_time();
>}
>
>So in a tight loop, if update_current_time() calls clock_gettime() on
>every loop iteration, what would kill performance.
Depends whether you call time() (slow) or gettimeofday() (fast)
Casper
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