Thanks Gene, Didn't even think to look there. Was logged in remotely in the pi user folder and don't have access to the /boot. (Just haven't given permission). Went to the system and found it in /boot just as you said.
console=serial0,115200 console=tty1 root=PARTUUID=f1b66b19-02 rootfstype=ext4 elevator=deadline fsck.repair=yes isolcpus=3 idle=poll rootwait quiet splash plymouth.ignore-serial-consoles This site talks about https://www.linuxtopia.org/online_books/linux_kernel/kernel_configuration/re46.html isolcpus=1,2,3 makes no difference. The latency error still shows up. Here's some info on the ForceTurbo https://forum.linuxcnc.org/27-driver-boards/42413-rpi4-7i96-improving-ping-times But this implies the stock RPi4 will _not_ run LCNC without heatsin+fan plus boosting above stock. John > -----Original Message----- > From: gene heskett [mailto:ghesk...@shentel.net] > Sent: March-06-22 9:57 PM > To: Enhanced Machine Controller (EMC) > Subject: Re: [Emc-users] Pi4 with LinuxCNC and MESA 7i92H > > On Sunday, 6 March 2022 23:20:41 EST John Dammeyer wrote: > > Hi Sam, > > I cannot find the equivalent of cmdline.txt on my Pi4 LinuxCNC system. > > This is the file that has the Idle=poll etc. Does this mean it's not > > part of the default LinuxCNC implementation for a Pi4? > > > > So where does it go and how is it accessed? Is there a how to document > > for this? Thanks > > John > > > You probably didn't look in the right place John, if thats a raspios > install, aka raspian back in buster days, its in the /boot partition. > > cat /etc/issue should tell you what it is, here its: > pi@rpi4:~ $ cat /boot/cmdline.txt > root=PARTUUID=5e3da3da-02 rootfstype=ext4 elevator=deadline > fsck.repair=yes rootwait plymouth.ignore-serial-consoles splash lapic > noxsave acpi_osi= isolcpus=3 idle=poll acpi_irq_nobalance noirqbalance > vmalloc=64MB clocksource=acpi_pm net.ifnames=0 usbhid.mousepoll=0 quiet > pi@rpi4:~ $ cat /etc/issue > Raspbian GNU/Linux 10 \n \l > pi@rpi4:~ $ uname -a > Linux rpi4.coyote.den 4.19.71-rt24-v7l+ #1 SMP PREEMPT RT Thu Feb 6 > 07:09:18 EST 2020 armv7l GNU/Linux > > That is a full desktop install, that pi can do anything, but is slower > than late pc's. > > > > -----Original Message----- > > > From: Sam Sokolik [mailto:samco...@gmail.com] > > > Sent: March-06-22 8:45 AM > > > To: Enhanced Machine Controller (EMC) > > > Subject: Re: [Emc-users] Pi4 with LinuxCNC and MESA 7i92H > > > > > > I still have the pi and 7i92 running on the green machine. I don't > > > remember the last time I got a realtme error. But I run > > > > > > Idle=poll isolcpus = 1,2,3 (going from memory) > > > > > > Force turbo = 1 > > > > > > And I think I have a bit of an overclock. > > > > > > On Sun, Mar 6, 2022, 6:24 AM J?r?mie Tarot <silopo...@gmail.com> > wrote: > > > > Le dim. 6 mars 2022 ? 12:40, Robin Szemeti via Emc-users < > > > > > > > > emc-users@lists.sourceforge.net> a ?crit : > > > > > Any bright ideas on how to add a second ethernet port to the Pi? > > > > > > > > An USB ethernet adapter should solve your problem easily! > > > > > > > > _______________________________________________ > > > > Emc-users mailing list > > > > Emc-users@lists.sourceforge.net > > > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > > > _______________________________________________ > > > Emc-users mailing list > > > Emc-users@lists.sourceforge.net > > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > _______________________________________________ > > 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, 1940) > If we desire respect for the law, we must first make the law respectable. > - Louis D. Brandeis > > > > > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
