Interesting, I noticed that my ssh keys where regenerated at every single 
boot thanks to a wrong sshd_config.

However, after fixing this problem, my usb0 interface does not connect 
anymore.

Am Mittwoch, 15. November 2017 09:51:29 UTC+1 schrieb Alexander Rössler:
>
> 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.
>
> What else can I do to make the BBB boot faster?
>

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