On 9/23/2012 1:19 PM, Michael Haberler wrote: > Am 23.09.2012 um 18:22 schrieb Kent A. Reed: > >> On 9/23/2012 3:34 AM, Michael Haberler wrote: >>> I just stumbled upon an idea (yet untested) to improve latency with >>> RT_PREEMPT on multicore cpu's like the atom >>> >>> <...> >>> what would needed to be done is to add the sched_setaffinity() code >>> fragment to rtapi_app and do the boot/setup incantations before starting >>> linuxcnc >>> >>> - Michael >>> >>> >> <deleted prior messages in thread> >> >> Thanks, Michael. >> >> Despite my waspish comment about custom-building my own kernel, I found >> myself doing just that, mostly because I know I'll have to relearn the >> process anyway to re-purpose some ARM appliances I have in my toybox. >> >> Nothing I've done so far in terms of turning off or deleting features >> from the kernel has made any noticeable improvement over the distributed >> Debian RT kernel, but of course I'm working in profound ignorance of >> what's going on inside the Atom processor and the ASUS BIOS. I feel like >> Rutherford trying to deduce the nature of atoms by shooting neutrons >> into a metal foil. (Yes, the pun is intended; I'm a physicist after all!) > ok, in that case you probably know the famous letter Igor Kapitza had written > to Rutherford who was away at a conference, and had forbidden strictly > Kapitza (a bona-fide nut case) to engage in any experiments while he was away: > > "Sir! Our experiment was a total success. We now know how an electric arc > with 130 kilo-amperes looks like..." > >
Well, no, I don't. Was this Igor or Piotr Kapitza? Piotr K. was awarded the Nobel Prize in Physics a few years after I left the University of Chicago. Working with high-voltage RF circuitry, large-volume ultra-high vacuum chambers, and cryogenic fluids, I had several "successes" of my own before I received my PhD. None quite as spectacular, perhaps, but quite memorable. And I said neutrons when I meant to say alpha particles. Sigh. Regards, Kent ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Emc-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers
