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I notice how my Ubuntu 18 boots very slow, so much slower than Windows that previously installed on the same machine. I don't use dual-boot, my machine is :

Ubuntu 18.04.3 LTS
Intel® Core™ i7-7700HQ CPU @ 2.80GHz × 8 
64-bit, NVIDIA GeForce GTX 950M

NVIDIA was quite problematic and causing boot issues, so I had to put some kernel boot parameters. Now it looks like this :

 GRUB_CMDLINE_LINUX_DEFAULT="quiet splash pci=nomsi pci=noaer
 acpi_enforce_resources=lax intel_pstate=disable acpi_osi=!Windows
 2012"

The default booting time is : 47s.

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I followed suggestion from this post : How to diagnose/fix very slow boot on Ubuntu 18.04, while some answers helped other people, it doesn't work on me.

What I have tried :

  1. Added noresume parameter in kernel boot. Literally from the post above, someone cut booting time by 31s !

    I upgraded to 18.04 yesterday and I had the same problem (it took 52 seconds to boot). After setting the "noresume" parameter, it took 21 seconds.

    Result : (sorry forgot to take a screenshot): 57s (10s slower). Why ?

  2. Decrease time process for Network and configuring the timeout for Start Job and Stop Jobs by changing :

    /etc/systemd/system/network-online.target.wants/networking.service

    Change TimeoutStartSec=5min to TimeoutStartSec=5s.

    Also, 

    /etc/systemd/system.conf

    change :

    DefaultTimeoutStartSec=5s
DefaultTimeoutStopSec=5s

    Result : Failed to boot. (Stuck at booting screen)

  3. Disable Networking during booting : 

    systemctl disable NetworkManager-wait-online.service

    Result : Booting time was 51s (4s slower).

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Why did I miss from steps above ? How did my machine ended up booting slower ?
Why did noresume which was supposed to prevent resume partition makes it slower instead ? Any other advice to decrease booting time ?

UPDATE

Following suggestion from WinEunuuchs2Unix, I tried :

  1. Disable networking as in step (3), and remove the journal flush service and vacuum it by changing :

    nano /etc/systemd/journald.conf

    change

    Storage=auto
SystemMaxUse=50M
SystemMaxFileSize=1G
SystemMaxFiles=5

    My original journal disk usage was 2G, now it's down to 200MB. But system-journal-flush.service time doesn't seem to get faster, it's still 11s.
    Also, before changing its settings, flushing time was 3.xx s. Now it's 10.xx s instead.

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Result, booting time : 52s (5s slower).

enter image description here

  1. Disabling tor-service : 

    /etc/default/tor

    change to RUN_DAEMON="no" and run 

    sudo systemctl disable tor.service

    Then added video=SVIDEO-1:d parameter to the boot kernel (following solution from : Long Kernel Boot Segment in 18.04).
    And masked systemd-journal-flush.service and the keyboard-setup.service (following solution from : Long boot time Ubuntu 18.04).

Result. Booting time : 45s. (2s faster), but I believe it can be improved.
On the second trial : 47s (no improvement).
I really thought disabling tor-service would give me 5~7s faster booting time since it originally took 10-13s in booting time.

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Still confused at how noresume parameter, disabling networking and vacuum logs from journal lead to slower booting time instead. Further suggestions will be appreciated !

UPDATE 2

  1. Install haveged. Booting time : 49s (2s slower)

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Just why.

raisa_
  • 391

1 Answers1

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You can probably disable network waiting altogether:

Remove the journal flush service and vacuum it instead:

Slow snapd times can be sped up by jiggling your mouse at boot time:

WinEunuuchs2Unix
  • 105,762