On Friday 07 April 2017 12:52:44 Peter C. Wallace wrote: > On Fri, 7 Apr 2017, Gene Heskett wrote: > > Date: Fri, 7 Apr 2017 12:38:45 -0400 > > From: Gene Heskett <ghesk...@shentel.net> > > Reply-To: "Enhanced Machine Controller (EMC)" > > <emc-users@lists.sourceforge.net> > > To: emc-users@lists.sourceforge.net > > Subject: Re: [Emc-users] for PCW? > > > > On Friday 07 April 2017 12:15:10 Peter C. Wallace wrote: > >> On Thu, 6 Apr 2017, Gene Heskett wrote: > >>> Date: Thu, 6 Apr 2017 22:19:56 -0400 > >>> From: Gene Heskett <ghesk...@shentel.net> > >>> Reply-To: "Enhanced Machine Controller (EMC)" > >>> <emc-users@lists.sourceforge.net> > >>> To: "Enhanced Machine Controller (EMC)" > >>> <emc-users@lists.sourceforge.net> Subject: [Emc-users] for PCW? > >>> > >>> Greetings Peter; > >>> > >>> 1) This config I started out with has a watchdog.reset as a > >>> separate addf'd function which I suspect is in the leftovers that > >>> are now past their use-by date column. Can I nuke that addf > >>> entry? > >> > >> In 2.7 and > the hm2 pet_watchdog function has been merged with the > >> hm2_write function so it should no longer be called > >> > >>> 2) I'm not that familiar with threads when they are added, slower > >>> than servo threads. > >>> > >>> So, can I move the final write to the 7i90 to the end of that > >>> string of servo-thread addf's, and treat the other slower thread > >>> for my jog wheel thread stuff as independent of the servo-thread > >>> list? > >> > >> You should ba able to, this is the normal LinuxCNC operation order: > >> > >> read inputs > >> process > >> write outputs > > > > IOW, my slow thread has to have its addf list between "process" > > and "write outputs" > > I think that Jon is right and the faster thread runs to completion > first before a slower thread is launched which means the order of > addfs only applies to a single thread > > BTW heres a way to dump all the tmaxes: > > pcw@pcw-G41M-Combo:~/linuxcnc-dev/scripts$ halcmd show param | grep > tmax | grep -v increased > 23 s32 RW 0 hm2_7i76e.0.read-request.tmax > 23 s32 RW 484870 hm2_7i76e.0.read.tmax > 23 s32 RW 96197 hm2_7i76e.0.write.tmax > 13 s32 RW 36898 motion-command-handler.tmax > 13 s32 RW 92834 motion-controller.tmax > 17 s32 RW 41030 pid.0.do-pid-calcs.tmax > 17 s32 RW 35255 pid.1.do-pid-calcs.tmax > 17 s32 RW 52240 pid.2.do-pid-calcs.tmax > 17 s32 RW 27198 pid.3.do-pid-calcs.tmax > 14 s32 RW 581638 servo-thread.tmax > > Note that these times are all in CPU clocks
from this I can strip out 561769 jog-thread.tmax, and 834372 servo-thread.tmax I do not know what the current clock speed is, could be as low as 700 or as high as 1200 MHz. Another thing this script is good for, showing me that I have 8 modules loaded but not addf'd, so those loadrt's can go away, saving a few bytes of memory. Stuff left in when I changed my mind about howtodoit. > > > So, I guess the best way to test this is to raise the slow-threads > > rate to match the servo-thread and see if that causes timeing > > overruns out the wazoo. Or set it down to really slow and see if it > > still works. > > > > What we need is not "hard real time" out of threads, but a way to > > set the priority of the threads it creates, and we do not now have > > that. > > > > Is it too late for a feature request for "soft threads" to get into > > 2.8 final? This jog-wheel stuff can I'm sure, be run on leftover > > time as long as there is some "leftover" time. > > > > Thanks Peter. > > > > 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> > > > > -------------------------------------------------------------------- > >---------- Check out the vibrant tech community on one of the world's > > most engaging tech sites, Slashdot.org! http://sdm.link/slashdot > > _______________________________________________ > > Emc-users mailing list > > Emc-users@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/emc-users > > Peter Wallace > Mesa Electronics > > (\__/) > (='.'=) This is Bunny. Copy and paste bunny into your > (")_(") signature to help him gain world domination. > > > ---------------------------------------------------------------------- >-------- Check out the vibrant tech community on one of the world's > most engaging tech sites, Slashdot.org! http://sdm.link/slashdot > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users 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> ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
