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
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: beagleboard@googlegroups.com [mailto:beagleboard@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 user@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/
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