The problem with the Pi3 is that people are trying to simultaneously run both a real time controller process and a graphic desktop system. Either of these might work but not both at once.
The Pi3 really is best when run "headless" with no monitor/keyboard/mouse plugged in. Real time processes really do need to take priority and this is in direct conflict with a responsive no-lag graphical interface. The way around it, is to use a grossly over powered processor, like an Intel powered PC or to use two processors (like the Pi and maybe a notebook PC) that are only loosely coupled. I've been working with small Linux based ARM processors and not just with MK or CNC work and the above is true in other use cases as well. For heavy duty graphic that does 3D renders it is good to have a decent GPU. On Sat, Jul 22, 2017 at 12:28 AM, Erik Christiansen <dva...@internode.on.net > wrote: > On 15.07.17 12:48, Gene Heskett wrote: > > Screen updates in the postgui stuff are I believe that main reason for > > over-runs as the pi's video is framebuffer=damned slow. One of the > > reasons I am considering a rock64, its cpu is about 30% faster, and > > can be had with 4Gb of dram @ $44.95. > > The only thing is that 30% faster than glacial still isn't up to some of > the motorin' of your youth, Gene. At this link: > https://www.udoo.org/forum/threads/rpi-3-vs-udoo-x86-cpu-benchmarks.7326/ > we have some runs of: > "sysbench --test=cpu --cpu-max-prime=20000 --num-threads=4 run" > which summarise as: > > Raspberry Pi 3 Model B (Raspbian Jessie, sysbench 0.4.12) 119.6545s > Udoo X86 Ultra (Debian Stretch, sysbench 0.4.12) 12.1223s > Udoo X86 Advanced on Ubuntu 16.04 LTS 14.6706s > Udoo X86 Advanced on Ubuntu 16.10 LTS, on on-board emmc 15.5837s > Udoo Basic, FreeBSD 11-RELEASE-p1 29.5172s > Here it is for an "older" up board (1) 15.0586s > > Did you hook an Up board onto the conveyor of goods headed out your way, > Gene, or was that one that got away? > > I just ran it on my Udoo X86 Advanced, and it gives 22.3 seconds. That > seems out of whack with the other results. Mind you, it didn't start the > fan, so may be still in first gear. > > Erik > > ------------------------------------------------------------ > ------------------ > 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 > -- Chris Albertson Redondo Beach, California ------------------------------------------------------------------------------ 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
