@Dennis L Bieber Really thanks for your detailed explanation about the each
services.
I also updated ubuntu from 16 to 18 and done some modification in the
services. now my board's logs are as below
My system should be working as station mode but may be future, we will add
AP mode also.
I will also remove nginx services.
ubuntu@beaglebone:~$ systemd-analyze blame
* 51.048s dev-mmcblk1p1.device*
* 28.951s generic-board-startup.service*
6.550s led-status.service
6.133s systemd-hwdb-update.service
4.805s grub-common.service
4.611s loadcpufreq.service
3.244s nginx.service
3.053s systemd-udev-trigger.service
2.971s avahi-daemon.service
2.099s ssh.service
1.958s archive_log.service
1.839s keyboard-setup.service
1.548s rsyslog.service
1.512s connman.service
1.438s systemd-user-sessions.service
1.404s wpa_supplicant.service
1.315s ofono.service
1.291s systemd-logind.service
1.275s cpufrequtils.service
1.253s tacread-keymap.service
887ms systemd-timesyncd.service
786ms [email protected]
685ms systemd-journald.service
508ms kmod-static-nodes.service
498ms dev-mqueue.mount
487ms fake-hwclock.service
469ms sys-kernel-config.mount
459ms systemd-fsck-root.service
422ms systemd-tmpfiles-setup-dev.service
406ms systemd-modules-load.service
401ms systemd-sysctl.service
390ms systemd-tmpfiles-setup.service
387ms setvtrgb.service
350ms nvda.service
341ms sys-fs-fuse-connections.mount
Also want to know that in ubuntu 18, why below two task taking so much time
and how we can reduce it further to achieve the over all boot time as 30
sec. Any suggestion will help me.
* 51.048s dev-mmcblk1p1.device*
* 28.951s generic-board-startup.service*
Thanks
Karishma Jaiswal
On Sunday, May 23, 2021 at 9:19:48 AM UTC+5:30 Dennis Bieber wrote:
> On Sat, 22 May 2021 12:00:54 -0700 (PDT), in
> gmane.comp.hardware.beagleboard.user Karishma Jaiswal
> <[email protected]> wrote:
>
> > 15.945s postfix.service
>
> Do you need a mail delivery service? http://www.postfix.org/ You have
> scripts sending emails?
>
> > 12.165s generic-board-startup.service
> > 8.654s apache2.service
>
> Do you need a web-server -- and if you do, does it have to be Apache?
> Consider that nginx is installed as part of the normal Debian images.
>
> > 7.635s systemd-logind.service
> > 6.160s avahi-daemon.service
>
> https://www.linux.com/topic/desktop/cleaning-your-linux-startup-process/
> """
> avahi-daemon.service is supposed to provide zero-configuration network
> discovery, and make it super-easy to find printers and other hosts on your
> network. I always disable it and don’t miss it.
> """
>
>
> > 5.594s systemd-hwdb-update.service
> > 5.568s ondemand.service
> > 5.432s loadcpufreq.service
> > 4.968s bb-wl18xx-bluetooth.service
> > 4.578s led-status.service
> > 3.547s networking.service
> > 2.981s capemgr.service
> > 2.412s hostapd.service
>
> Do you need to have the unit operate as a WiFi hotspot (Access Point)?
> Note: not sure if the authentication feature is used for regular connection
> /to/ an access point (WiFi Router). https://man.openbsd.org/hostapd.8
>
> > 2.389s rsyslog.service
> > 2.073s cpufrequtils.service
> > 1.535s ssh.service
> > 1.477s systemd-user-sessions.service
> > 1.389s pppd-dns.service
>
> Same web site:
> """
> pppd-dns.service is a relic of the dim past. If you use dial-up Internet,
> keep it. Otherwise, you don’t need it.
>
> """
> > 1.151s systemd-udev-trigger.service
> > 1.040s archive_log.service
> > 1.011s systemd-journal-flush.service
> > 979ms rc-local.service
> > 860ms brltty.service
> Ditto:
> """
> brltty.service provides Braille device support, for example, Braille
> displays.
> """
>
> > 653ms keyboard-setup.service
> > 629ms systemd-journald.service
> > 609ms tacread-keymap.service
>
> Can't find any information on "tacread" via Google... Nor via apt
> search in Buster IoT release.
>
> > 499ms rename-bluetooth-hardware.service
> > 494ms systemd-update-utmp.service
> > 462ms systemd-udevd.service
> > 451ms resolvconf.service
> > 437ms dev-mqueue.mount
> > 437ms sys-kernel-debug.mount
>
>
> --
> Dennis L Bieber
>
>
--
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