> 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
You can nuke this ^, it's really only for am57xx, so we can downclock.. But on am335x, let it run at full speed as these are set: CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE=y CONFIG_CPU_FREQ_GOV_PERFORMANCE=y > 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 Same as above.. > 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 You nuked wpasupplicant, get rid of hostapd.. > 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. -- 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+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/CAOCHtYiuY6ECN7pemXO%2B5CRKH4sEixN3%3DKhL6-BijrY7H%2BNoYg%40mail.gmail.com.
