On Mon, Apr 15, 2013 at 5:02 PM, website reader <[email protected]>wrote:
> I carefully added extra error capture code to the timestamping > routine, nanosleep is always returning with a good "0" status. What > is unusual is that sometimes it doesn't return when it is supposed to, > the system seems to place it on the shelf for awhile, then eventually > get back to it, sometimes 0.5 seconds later than it is supposed to. > > Has anyone come across this problem before? I am running 12 cores 64 > bit smp, Ubuntu 12.04.2 LTS. > > Randall > If your application really has to have accurate reliable timing then you will need to write a real time application and install a kernel built with the PREEMPT_RT patch https://rt.wiki.kernel.org/index.php/Main_Page otherwise you will be subject to the type of problem you are encountering. Bill _______________________________________________ PLUG mailing list [email protected] http://lists.pdxlinux.org/mailman/listinfo/plug
