Thanks. Yes. It does. John From: beagleboard@googlegroups.com [mailto:beagleboard@googlegroups.com] On Behalf Of Amit Goradia Sent: May-20-21 2:42 AM To: BeagleBoard Subject: Re: [beagleboard] Reducing Boottime in Beaglebone Black On Wednesday, 19 May, 2021 at 10:07:53 pm UTC+5:30 jo...@autoartisans.com wrote: Hi Amit, Interesting. 4.19.94 is a only a little bit faster than 4.14.108. Is there a document somewhere that explains what to do to even just speed up both start up and shut down? What did you do to get it to 50 seconds? John Hi John, I did not do much actually to get to 50s. Started from a console Image : https://rcn-ee.com/rootfs/bb.org/testing/2020-05-02/stretch-console/bone-eMMC-flasher-debian-9.12-console-armhf-2020-05-02-1gb.img.xz replaced the kernel: cd /opt/scripts/tools/ sudo su git pull ./update_kernel.sh --ti-rt-channel --lts-4_19 removed wpasupplicant and connman and old kernel sudo apt-get purge linux-image-4.14.108-ti-r134 wpasupplicant connman debian@beaglebone:~$ systemd-analyze Startup finished in 13.502s (kernel) + 36.686s (userspace) = 50.188s I then removed the initrd file in /boot directory (From what I understand this kernel does not necessarily need initrd). debian@beaglebone:/boot$ sudo mv initrd.img-4.19.94-ti-rt-r63 moved-initrd.img-4.19.94-ti-rt-r63 Removing the initrd gives the max speedup for kernel. From 10s-13s with initrd, it reduces to 1s-2s debian@beaglebone:~$ systemd-analyze Startup finished in 1.663s (kernel) + 36.385s (userspace) = 38.048s debian@beaglebone:~$ systemd-analyze blame 1min 4.266s dev-mmcblk1p1.device 26.360s generic-board-startup.service 3.847s systemd-udev-trigger.service 2.824s loadcpufreq.service 2.215s networking.service 1.647s ssh.service 1.396s user@1000.service 1.209s rsyslog.service 1.189s systemd-journald.service 999ms dnsmasq.service 897ms cpufrequtils.service 855ms systemd-timesyncd.service 674ms systemd-fsck-root.service 642ms systemd-logind.service 505ms systemd-udevd.service 445ms systemd-user-sessions.service 408ms systemd-tmpfiles-setup-dev.service 389ms systemd-update-utmp.service 375ms hostapd.service 365ms systemd-modules-load.service 326ms dev-mqueue.mount 324ms systemd-random-seed.service 312ms sys-kernel-config.mount 291ms systemd-tmpfiles-setup.service 274ms sys-kernel-debug.mount 236ms kmod-static-nodes.service 231ms sys-fs-fuse-connections.mount 200ms systemd-remount-fs.service 190ms systemd-journal-flush.service 185ms systemd-sysctl.service 145ms systemd-update-utmp-runlevel.service 130ms systemd-tmpfiles-clean.service Next point to attack is the generic-board-startup.service. The main time that process spends is in the file /opt/scripts/boot/am335x_evm.sh This takes care of the USB flash, Serial and network gadgets that are initialized. Remove items which are not needed. It also has a lot of generic selections for Beagle family boards which can be removed. I am working on my version for just beaglebone black with only network over USB support. Some ideas can be found here (https://github.com/RobertCNelson/boot-scripts/issues/10) Hope that helps. -amit debian@ebb:~$ uname -a Linux ebb 4.14.108-ti-r136 #1stretch SMP PREEMPT Mon Jun 8 15:38:30 UTC 2020 armv7l GNU/Linux debian@ebb:~$ systemd-analyze Startup finished in 40.059s (kernel) + 1min 27.889s (userspace) = 2min 7.948s debian@ebb:~$ systemd-analyze blame 1min 47.177s dev-mmcblk0p1.device 1min 13.819s generic-board-startup.service debian@beaglebone:~$ uname -a Linux beaglebone 4.19.94-ti-r63 #1buster SMP PREEMPT Fri May 14 16:42:32 UTC 2021 armv7l GNU/Linux debian@beaglebone:~$ systemd-analyze Startup finished in 26.608s (kernel) + 1min 32.506s (userspace) = 1min 59.114s graphical.target reached after 1min 32.205s in userspace debian@beaglebone:~$ systemd-analyze blame 1min 20.997s generic-board-startup.service 1min 4.519s dev-mmcblk0p1.device 11.344s udisks2.service From: beagl...@googlegroups.com [mailto:beagl...@googlegroups.com] On Behalf Of Amit Goradia Sent: May-19-21 12:00 AM To: BeagleBoard Subject: Re: [beagleboard] Reducing Boottime in Beaglebone Black Hi Robert, Awesome work with the Beaglebone OS and tools. Entry point for a beginier is so much simplified using the tools you provide. I know this topic is OLD. I have been trying to get my boot times with a BBB down from about 50s to 20s I have started with a Debian Stretch 9.12 console image. Upgraded it to realtime kernel 4.19. Booting from EMMC. Trying to get a single console app or X11 app open in less than 20-25s This is my output for systemd-analyze blame debian@beaglebone:~$ systemd-analyze Startup finished in 1.690s (kernel) + 50.841s (userspace) = 52.532s debian@beaglebone:~$ systemd-analyze blame 1min 15.560s dev-mmcblk1p1.device 8.459s generic-board-startup.service 4.654s systemd-udev-trigger.service 3.188s loadcpufreq.service 2.620s networking.service 2.157s keyboard-setup.service 1.791s systemd-logind.service 1.711s dnsmasq.service 1.631s ssh.service 1.529s rsyslog.service 1.429s us...@1001.service 1.418s systemd-journald.service 1.204s cpufrequtils.service 1.071s systemd-timesyncd.service 918ms systemd-fsck-root.service 597ms systemd-udevd.service 528ms dev-mqueue.mount 515ms sys-kernel-debug.mount 495ms systemd-tmpfiles-setup-dev.service 469ms systemd-tmpfiles-setup.service 451ms systemd-sysctl.service 417ms systemd-modules-load.service 400ms systemd-user-sessions.service 388ms sys-fs-fuse-connections.mount 369ms systemd-journal-flush.service 355ms slim.service 324ms systemd-update-utmp.service 311ms sys-kernel-config.mount 303ms kmod-static-nodes.service 300ms systemd-remount-fs.service 238ms console-setup.service 210ms systemd-random-seed.service 140ms systemd-update-utmp-runlevel.service debian@beaglebone:~$ uname -a Linux beaglebone 4.19.94-ti-rt-r63 #1stretch SMP PREEMPT RT Fri May 14 16:42:35 UTC 2021 armv7l GNU/Linux Any advise you can give to reduce the userspace time further? IT would be really helpful if you could list the optimizations you did for the FLIR demo app. Regards, amit On Monday, 16 July, 2018 at 8:35:57 pm UTC+5:30 RobertCNelson wrote: On Mon, Jul 16, 2018 at 10:01 AM, sajeevan k <saje...@laxven.com> wrote: > > Hi Robert Nelson, Dennis Lee & Daniel Kulp, > > > Thank You very much for the reply and support. > > I have been little busy with some other tasks. So I couldn't test with the > iot image. > I am hopeful in the idea of starting from iot image and build up from it. > > Will the fix for CVE-2018-1108, affect the normal booting of Beaglebone > black? Is there a chance that normal applications access random data at boot > time?
Even with the fix for that CVE, v4.14.x is still faster then v4.9.x.. It just use to be 'way' faster.. Regards, -- Robert Nelson https://rcn-ee.com/ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/989d9ca9-b8c8-424d-a88a-62cac4d4cc36n%40googlegroups.com <https://groups.google.com/d/msgid/beagleboard/989d9ca9-b8c8-424d-a88a-62cac4d4cc36n%40googlegroups.com?utm_medium=email&utm_source=footer> . -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/fde7a746-4ae2-41c8-aa2b-3791e534a176n%40googlegroups.com <https://groups.google.com/d/msgid/beagleboard/fde7a746-4ae2-41c8-aa2b-3791e534a176n%40googlegroups.com?utm_medium=email&utm_source=footer> . -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/030d01d74d95%24c2810460%2447830d20%24%40autoartisans.com.
