On Thursday 23 May 2019 12:18:50 am Robert Murphy wrote: > Sorry for this second post......regarding latency, would this be an > option > > http://www.machinekit.io/docs/hal/threads-and-latency/ > This is an interesting little treatise. Let me suggest some further development to allow it to determine the best configuration and implement that variation, depending on the cache construction used in the cpu it finds itself running on.
Another way to unload the servo-thread that I use on the pi running my Sheldon is to setup a much slower thread, and move all the manual control stuff to it, thereby reducing the size of the servo-thread loop and its execution time. Not much use of the jog dials being handled much more than 100 times a second, and thats a fairly complex bit of hal code times 2. 100/sec is faster than one can turn the MPJA dials by hand and still maintain control although I can run into the MAXVEL's set with the dials when the jog size is set high. So I have that set for a max per click of 20 thou, going down to .0002 thou. I have other hal routines that report via pyvcp for such as the overshoot and distance traveled during that over shoot when rigid tapping, which lets me tap a hole to a small fraction of a turn from striking the bottom of the hole and breaking the tap. All that stuff is nice, but it also takes the poor pi's cores a while to calculate and display. Such "fine tuning" by the user shouldn't be discouraged, and should be described in the wiki, or mentioned at least in the documentation.pdf so the user can more easily be made aware of such "optimizations." > On 23/5/19 2:16 pm, Robert Murphy wrote: > > Could not the repos be setup from a preseed ? (I'm don't know a > > great deal about the LiveCD but I did make a custom stretch install > > disk ....for private use.... using a preseed file to config desktop, > > extra packages and repos) > > > > On 23/5/19 1:45 pm, Chris Radek wrote: > >> On Wed, May 22, 2019 at 01:31:15PM +0100, andy pugh wrote: > >>> We have a LiveCD based on Wheezy and RTAI but that is currently > >>> somewhat > >>> broken (the apt sources list points at files that are no longer > >>> there now > >>> that Wheezy is a long way past EOL) > >>> I have tried to respin that ISO using the archive repositiories. > >>> So far that isn't going all that well. > >> > >> I will work on this part. > >> > >> > >> > >> _______________________________________________ > >> Emc-developers mailing list > >> Emc-developers@lists.sourceforge.net > >> https://lists.sourceforge.net/lists/listinfo/emc-developers > > > > _______________________________________________ > > Emc-developers mailing list > > Emc-developers@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/emc-developers > > _______________________________________________ > Emc-developers mailing list > Emc-developers@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-developers Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
