On Nov 18, 2017 9:01 AM, "Alexander Rössler" <[email protected]> wrote:
I need an RT kernel, so 4.14 does not work for me, yet. Are there any improvements with 4.9 over 4.4? Rt just came out for v4.14 https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/ I'll have something later tonight, when my plane lands. Am Mittwoch, 15. November 2017 19:59:43 UTC+1 schrieb RobertCNelson: > > > On Nov 15, 2017 2:51 AM, "Alexander Rössler" <[email protected]> wrote: > > Hello everyone, > > I'm using the latest IoT images for the BBB and noticed that the bootup > time from the eMMC is very slow. it takes ~1.5min for the USB gadget > network interface to appear under Linux. > > What can I do to improve the startup performance of the BBB? > > So far I have disabled auto for the eth0 interface. > > sudo nano /etc/network/interfaces > allow-hotplug eth0 > > > Moreover, I have disabled graphical boot. > > systemctl set-default multi-user.target >> systemctl get-default > > > Still very slow is the generic-board-startup.service > > 1min 53.980s dev-mmcblk1p1.device > 1min 50.627s generic-board-startup.service > 4.208s ModemManager.service > 4.106s systemd-udev-trigger.service > 2.366s networking.service > 2.032s NetworkManager.service > 1.973s capemgr.service > 1.838s systemd-journald.service > 1.809s pppd-dns.service > 1.579s dnsmasq.service > 1.486s rsyslog.service > 1.098s avahi-daemon.service > 920ms systemd-logind.service > 856ms systemd-udevd.service > 845ms bb-wl18xx-wlan0.service > 737ms sys-fs-fuse-connections.mount > 730ms ssh.service > 724ms systemd-sysctl.service > 719ms systemd-timesyncd.service > 651ms sys-kernel-debug.mount > 604ms systemd-update-utmp.service > 592ms dev-mqueue.mount > 559ms sys-kernel-config.mount > 493ms systemd-remount-fs.service > 458ms polkit.service > 448ms systemd-user-sessions.service > 414ms systemd-tmpfiles-setup-dev.service > 413ms systemd-tmpfiles-setup.service > 360ms systemd-random-seed.service > 359ms systemd-journal-flush.service > 319ms systemd-modules-load.service > 319ms kmod-static-nodes.service > 225ms systemd-update-utmp-runlevel.service > 168ms bb-wl18xx-bluetooth.service > > > I noticed that SSH key regeneration takes ~15s at boot. However, when I > removed /etc/ssh/ssh.regenerate USB networking did not work anymore. > > > This is only an issue on first boot, as the keys are only generated once. > > > > What else can I do to make the BBB boot faster? > > > > Use the v4.14.x based kernel. > > As I've spent some time building in and disabling unneeded modules. > > Regards, > -- 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 [email protected]. To view this discussion on the web visit https://groups.google.com/d/ msgid/beagleboard/6f60b064-9c00-47b3-ad4c-b6df25fb0ee3%40googlegroups.com <https://groups.google.com/d/msgid/beagleboard/6f60b064-9c00-47b3-ad4c-b6df25fb0ee3%40googlegroups.com?utm_medium=email&utm_source=footer> . For more options, visit https://groups.google.com/d/optout. -- 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 [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/CAOCHtYg-TcrTNYnNyEV27MXFmWq-eU5MxEu-vQ37j95xx%3D%2B5Hg%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
