Thanks Alan. I can apply that to the new opi rt image from Russia ( orange-cnc.ru ) . They have interesting Hal gpio module allows any pin to have reset feature for double step. I will build those rt tools tonight to test latency. Thanks TomP
On Sat, Apr 27, 2019, 12:58 AM Alan Condit <condit.a...@gmail.com> wrote: > Hello Tom, > > I downloaded the cyclictest suite and ran it several times. The average > latency is 3 microseconds. Running it via ssh the max was 45 or 48 until I > logged from a wireless keyboard and the HDMI video. I started X and LXQT > during that startup, the max went to 58. > > I just started it again with the -h option to produce a histogram, now the > max is 62 and the average is 4. > > Alan > > > > > From: TJoseph Powderly <tjt...@gmail.com> > > Subject: Re: [Emc-users] Rockpro64 arrived > > Date: April 25, 2019 at 9:07:16 PM PDT > > To: emc-users@lists.sourceforge.net > > > > > > Hello Alan > > > > On 04/26/2019 11:02 AM, Alan Condit wrote: > >> I downloaded the Arabian Stretch nightly image > Armbian_5.83.190424_Rockpro64_Debian_stretch_dev_5.0.0.7z < > https://dl.armbian.com/rockpro64/nightly/Armbian_5.83.190424_Rockpro64_Debian_stretch_dev_5.0.0.7z>. > It is running the 5.0.0 kernel (as patched by Armbian. When I ran > menuconfig, I had to figure out how to select the full RT preempt. Then I > built the linux-stable-rt-4.19.31-rt18 kernel and installed it. At the end > of the install the Image link was still pointing to the 5.0.0 kernel but > the Initrd link was pointing to the initrd-linux-stable-rt-4.19.31-rt18. So > I tried booting it up and it booted the 5.0.0 image, then I went into > /boot, deleted the Image link and created a new symbolic link to 4.19.31-rt > kernel. Then I tried booting again and it worked. I typed uname -a and it > reported the 4.19.31 kernel with full SMP Preempt RT. So, Gene, you could > do the same thing for your Rock64 but you need to download the Armbian > image for the Rock64 rather than the RockPro64. Don’t ask how I know!!! I > compiled the kernel on the RockPro64. I started about 8:00p.m. and it > finished sometime after 2:00a.m. and before 7:00a.m. Alan > > please, latency test says what? > > tomp > > > _______________________________________________ > 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
