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Slow boot

Posted: Tue Jan 19, 2021 7:47 am
by warchild
I searched already a bit, though there are plenty of similar threads, it seems none is really "fitting" so i have to start a new one.
I'm new to Raspi, Dietpi etc. I installed Dietpi a few weeks ago on my new Pi4b (directly on USB SSD) but Boot times are really slow (5mins+) which is obviously not ok.
My first try was install on SD, than copy SD to SSD. When i expected this slow boot, i thought ok maybe is that not the best way and reinstalled directly to ssd. But boot times did not improve. So i now tried the ARM64 build - but still the same.
So i changed the SSD (now a 256GB MX100, which "retired" from my PC), i changed the USB Cord as well as the USB Port on the Pi. But always the same slow boot times. Only thing i installed is Samba, MinIO and PiHole.
When i benchmark the ssd i got ~300mb read speed, so that shouldn't be the problem.

Following systemd-analyze blame
1min 30.019s php7.3-fpm.service
1min 3.620s lighttpd.service
1min 998ms rpi-eeprom-update.service
1min 836ms dietpi-preboot.service
34.175s dev-sda2.device
32.446s keyboard-setup.service
32.354s systemd-fsck-root.service
32.044s systemd-sysctl.service
5.451s dietpi-boot.service
4.760s unbound.service
570ms pihole-FTL.service
461ms systemd-udev-trigger.service
259ms systemd-journald.service
230ms smbd.service
228ms systemd-fsck@dev-disk-by\x2dpartuuid-ad09722e\x2d01.service
163ms nmbd.service
105ms systemd-remount-fs.service
96ms networking.service
86ms systemd-tmpfiles-setup.service
81ms dietpi-ramlog.service
69ms systemd-udevd.service
67ms systemd-journal-flush.service
63ms systemd-modules-load.service
62ms fake-hwclock.service
55ms dev-mqueue.mount
53ms kmod-static-nodes.service
52ms systemd-tmpfiles-setup-dev.service
47ms systemd-sysusers.service
46ms systemd-update-utmp.service
42ms systemd-random-seed.service
38ms sys-kernel-config.mount
37ms sys-kernel-debug.mount
36ms dropbear.service
23ms boot.mount
22ms tmp.mount
21ms console-setup.service
21ms systemd-update-utmp-runlevel.service
21ms rng-tools.service
20ms ifupdown-pre.service
19ms systemd-user-sessions.service
19ms var-log.mount
8ms minio.service

I can see now for what it need that much time - but the question remains: why?

Hope someone can help me - though my Pi isn't expected to be rebooted that often it's definitely annoying if it takes that long!

Thanks in advance to all aand especially to the DietPi-Team for their work!

Re: Slow boot

Posted: Tue Jan 19, 2021 10:29 am
by Joulinar
well it takes 35 seconds for your USB device to get ready, which is incredibly slow. That's why the rest of the system takes that long to boot up

Code: Select all

34.175s dev-sda2.device
Usually less than 1 sec should be the goal. you could check dmesg and/or journalctl right after reboot on further timings

Re: Slow boot

Posted: Tue Jan 19, 2021 11:16 am
by warchild
Joulinar wrote: Tue Jan 19, 2021 10:29 am well it takes 35 seconds for your USB device to get ready, which is incredibly slow. That's why the rest of the system takes that long to boot up

Code: Select all

34.175s dev-sda2.device
Usually less than 1 sec should be the goal. you could check dmesg and/or journalctl right after reboot on further timings
OK, when i'm later back home i'll check this.
And i ordered another SATA->USB adapter. Maybe there's something wrong. Though i know i used it unter Windows before and did not experience any odd behavior?!

Re: Slow boot

Posted: Tue Jan 19, 2021 4:40 pm
by Joulinar
can you have a look what adapter you are using? We have some reports about challenges on JMicron adapter

viewtopic.php?f=9&t=8349

Re: Slow boot

Posted: Tue Jan 19, 2021 5:29 pm
by warchild
Joulinar wrote: Tue Jan 19, 2021 4:40 pm can you have a look what adapter you are using? We have some reports about challenges on JMicron adapter

viewtopic.php?f=9&t=8349
Indeed JMicron:

Code: Select all

Bus 002 Device 002: ID 152d:0578 JMicron Technology Corp. / JMicron USA Technology Corp. JMS567 SATA 6Gb/s bridge

Re: Slow boot

Posted: Tue Jan 19, 2021 9:09 pm
by Joulinar
we have a couple of reports for these adaptor using JMicron chip. If possible try to use a different one, as this was the solution nearly all case.

Re: Slow boot

Posted: Wed Jan 20, 2021 9:18 am
by warchild
New USB-SATA adapter will be delivered today, will give update once i exchanged them.

Thanks so far for the help!

Re: Slow boot

Posted: Wed Jan 20, 2021 9:41 am
by Joulinar
Hope the new adapter is going to work and did not contain this chip

Re: Slow boot

Posted: Wed Jan 20, 2021 10:20 am
by warchild
As per Description it should be AsMedia Chip.
So I'm optimistic it will solve the problem.

Re: Slow boot

Posted: Thu Jan 21, 2021 7:37 am
by warchild
Joulinar wrote: Tue Jan 19, 2021 9:09 pm we have a couple of reports for these adaptor using JMicron chip. If possible try to use a different one, as this was the solution nearly all case.
It's obviously the JMicron. The new adapter arrived, i changed it and "boom":

Code: Select all

6.474s dietpi-boot.service
          5.793s unbound.service
          2.240s dev-sda2.device
           443ms systemd-udev-trigger.service
           434ms keyboard-setup.service
           392ms systemd-fsck-root.service
           388ms rpi-eeprom-update.service
           374ms pihole-FTL.service
           284ms netfilter-persistent.service
           279ms systemd-journald.service
           253ms php7.3-fpm.service
           230ms dietpi-preboot.service
           227ms systemd-fsck@dev-disk-by\x2dpartuuid-ad09722e\x2d01.service
           222ms smbd.service
           215ms lighttpd.service
           212ms phpsessionclean.service
           154ms wg-quick@wg0.service
           152ms nmbd.service
           124ms systemd-modules-load.service
           117ms fake-hwclock.service
           114ms systemd-remount-fs.service
           101ms systemd-tmpfiles-setup.service
            95ms networking.service
            90ms dietpi-ramlog.service
            79ms systemd-sysctl.service
            71ms kmod-static-nodes.service
            66ms systemd-udevd.service
            56ms systemd-journal-flush.service
            53ms systemd-tmpfiles-setup-dev.service
            53ms systemd-update-utmp.service
            49ms sys-kernel-debug.mount
            47ms systemd-sysusers.service
            42ms dev-mqueue.mount
            40ms systemd-random-seed.service
            34ms systemd-tmpfiles-clean.service
            34ms dropbear.service
            27ms rng-tools.service
            27ms console-setup.service
            22ms tmp.mount
            21ms systemd-user-sessions.service
            21ms systemd-update-utmp-runlevel.service
            20ms boot.mount
            20ms sys-kernel-config.mount
            18ms var-log.mount
            16ms ifupdown-pre.service
             9ms minio.service
Thanks for the help, and maybe this should be mentioned on some place, that you better NOT use JMicron USB-Sata adapters?!