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Thread: boot/startup time

  1. #1
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    boot/startup time

    so after seeing a couple of posts about people moaning about slow startup / boot times ,i decided to time mine with a stopwatch.
    from a completely off pc to a workable pc (after i logged in) ,it took 1 min 51 sec.
    should i moan ? how can i shed a second or maybe two ?
    xubuntu 20.04 LTS (focal fossa)

  2. #2
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    Re: boot/startup time

    Code:
    systemd-analyze blame
    systemd-analyze  critical-chain

  3. #3
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    Lubuntu 20.04 Focal Fossa

    Re: boot/startup time

    That's about right for a HDD boot. SDD will be around 25% of that.

  4. #4
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    Re: boot/startup time

    Quote Originally Posted by ml9104 View Post
    That's about right for a HDD boot. SDD will be around 25% of that.
    It is possible to get boot down to less than 20 seconds on spinning HDDs if all the extra crap the DEs load "to be easy" are prevented. There are lots of threads here where people are able to reduce their boot times by 50% just by disabling stuff they never use. For example, if you don't use ZFS, BTRFS, Bluetooth, snaps, autofs, samba, LVM, lpd and a bunch of other daemons, why have them run at startup, before the login screen is displayed?

    As I look through a system and see a number 1sec "loop" device times, I know these are all for snaps that I seldom use. The apt-daily-upgrade.service needs to be stopped here too. I patch weekly and don't need any automatic stuff related to that.

    Code:
    sudo systemctl stop apt-daily-upgrade.service
    sudo systemctl disable apt-daily-upgrade.service
    sudo systemctl mask apt-daily-upgrade.service
    Done. People who like to be nagged about available updates or have them installed automatically wouldn't want to do that.

    On another system, these are killers:
    Code:
             36.925s systemd-udev-settle.service
             20.171s systemd-fsck@dev-istar\x2d8TB-istar\x2dback3\x2da.service
             19.684s systemd-fsck@dev-istar\x2d8TB\x2dB-lv4_back.service
    Those are waiting for slow, huge, USB storage devices that go to sleep when not used recently. I need to prevent that if I want faster startups.
    Even wasting 56 seconds,
    Code:
    $ systemd-analyze
    Startup finished in 8.060s (kernel) + 1min 1.735s (userspace) = 1min 9.796s
    That's a no-SSD, dual-core pentium, system with 30+TB of storage connected. I'll be swapping some of the USB storage to eSATA on that system soon. That will make those times drop or go away.
    Last edited by TheFu; 3 Weeks Ago at 11:53 PM.

  5. #5
    Join Date
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    Ubuntu Development Release

    Re: boot/startup time

    systemd-analyze
    Startup finished in 3.652s (kernel) + 47.630s (userspace) = 51.282s
    graphical.target reached after 47.601s in userspac


    Ubuntu 20.10 Gnome 3.36 Wayland
    1T HD. 2 x 1.1ghz cores 12G RAM Legacy boot.

    I find this result to be very acceptable.

  6. #6
    Join Date
    May 2013
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    729

    Re: boot/startup time

    Quote Originally Posted by 3nd View Post
    so after seeing a couple of posts about people moaning about slow startup / boot times ,i decided to time mine with a stopwatch.
    from a completely off pc to a workable pc (after i logged in) ,it took 1 min 51 sec.
    should i moan ? how can i shed a second or maybe two ?
    Check whether the UUID of your swap is correct in /etc/fstab and in /boot/grub/grub.cfg
    If it is wrong, it'd take 1 min and 30 sec checking.
    Last edited by Chanath; 3 Weeks Ago at 05:55 PM.

  7. #7
    Join Date
    Oct 2009
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    Ubuntu Development Release

    Re: boot/startup time

    On development version of Ubuntu 20.04.1
    Code:
    p-i@asus-b450-f:~$ systemd-analyze
    Startup finished in 21.569s (firmware) + 2.216s (loader) + 3.686s (kernel) + 8.068s (userspace) = 35.541s 
    graphical.target reached after 8.055s in userspace
    p-i@asus-b450-f:~$

  8. #8
    Join Date
    Jun 2019
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    Lubuntu 20.04 Focal Fossa

    Re: boot/startup time

    This is mine:
    Code:
    macro@macro-pc:~$ systemd-analyze
    Startup finished in 3.591s (kernel) + 12.753s (userspace) = 16.344s 
    graphical.target reached after 12.721s in userspace
    12 year old HP/Compaq with 4 GB RAM, 2 GHz CPU and new SSD. Total boot time is 26 seconds, so power-up and BIOS take ~10 seconds. I don't see much room for improvement...

  9. #9
    Join Date
    Nov 2009
    Beans
    Hidden!
    Distro
    Kubuntu 18.04 Bionic Beaver

    Re: boot/startup time

    hdd should be 45sec -1min, however, with snapd in 20.04 it could take longer.

    others already demonstrated the difference when using SSD.
    Read the easy to understand, lots of pics Ubuntu manual.
    Do i need antivirus/firewall in linux?
    Disk backup (works on newer PC): Clonezilla
    User friendly full disk backup Redobackup is now back as Rescuezilla

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