Am Wednesday 17 May 2006 00:36 schrieb Martin Peschke:
> Any other hints on how to replace my sched_clock() calls are welcome.
> (I want to measure elapsed times in units that are understandable to
> users without hardware manuals and calculator, such as milliseconds.)
There are a number of APIs that allow you to get the time:
- do_gettimeofday
potentially slow, reliable TOD clock, microsecond resolution
- ktime_get_ts
monotonic clock, nanosecond resolution
- getnstimeofday
reliable, nanosecond TOD clock
- xtime
jiffie accurate TOD clock, with fast reads
- xtime + wall_to_monotonic
jiffie accurate monotonic clock, almost as fast
- get_cycles
highest supported resolution and accuracy, highly
HW-specific behaviour, may overflow.
Arnd <><
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
