On Friday 22 June 2018 11:39:55 John Dammeyer wrote: > I believe the BeagleBone Black MachineKit uses one of the RT kernel > modifications. However, it's the two PRU processors inside the Beagle > that make it possible to run stepping motors and decode encoders. > > It actually boggles my mind that decades after say OS-968K, VRTX-86 > RTOS or for that matter the RTOS I wrote in University that something > like Linux doesn’t have a RT Kernal and that if you didn’t want RT > capability that then you'd have flavours off the main line for that. > > Perhaps so much of the internal Linux code would be broken with badly > written code that has priority inversions etc. and would therefore be > broken that it continues down the path of non-real time. > > Simply mind boggling. > > John
<"linux-rt-users" <linux-rt-us...@vger.kernel.org> Subscribe to that list. Itd a front row seat to the linux rt kernel working group. You aren't looking very hard John. I have built the kernels that are posted to the above list on a rock64, intended to run on that rock64, but could not locate the info to let me install it on a u-boot system. It takes about an hour using a usb3 attached drive for workspace. Un forch, the drive died and took all that with it, bumming me seriously out. I may yet at some point, see how long it takes to build on an rpi3b. But given the rpi's internal usb-2 bottleneck speed, likely a day or so. I am looking around for a usb2-sata adapter and I'll try it on a 60 GB SSD. The usb spinning rust drive redefines slow, gotta be something faster about. > > -----Original Message----- > > From: andy pugh [mailto:bodge...@gmail.com] > > Sent: June-22-18 5:47 AM > > To: Enhanced Machine Controller (EMC) > > Subject: [Emc-users] Raspberry Pi PREEMPT-RT > > > > I haven't seen this mentioned here. It seems that it might be > > relevant: > > > > https://www.raspberrypi.org/forums/viewtopic.php?t=206747 > > > > -- > > atp > > "A motorcycle is a bicycle with a pandemonium attachment and is > > designed for the especial use of mechanical geniuses, daredevils and > > lunatics." > > � George Fitch, Atlanta Constitution Newspaper, 1916 > > > > -------------------------------------------------------------------- > >---------- 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 > > ---------------------------------------------------------------------- >-------- 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
