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Ubuntu Boot Times From Linux 4.6 To 4.15 Kernels

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  • Ubuntu Boot Times From Linux 4.6 To 4.15 Kernels

    Phoronix: Ubuntu Boot Times From Linux 4.6 To 4.15 Kernels

    It's been a while since last doing any Linux boot speed comparisons while this morning I have some numbers to share when looking at the boot performance from the Linux 4.6 kernel through Linux 4.15 Git to see how it's changed over time,..

    http://www.phoronix.com/scan.php?pag...rnel-Boot-Time

  • #2
    How about other distros? My system boots in 15 seconds (total) according to systemd-analyze. But that includes systemd-boot menu and firmware (which takes almost 10 seconds).

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    • #3
      It's far more interesting seeing the different boot times of different linux versions. I can't believe how much faster my RHEL7 VMs start compared to RHEL6 and the super slow RHEL5

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      • #4
        Even UEFI + Windows 8 is somewhat impressive.
        Now if you've ever seen an old PS/2, 386DX with 10 MB RAM (some on a long MCA board!) it spent most of the time "counting" the RAM, then the DOS 5.0 booted rather quickly. If someone were to make an add-in board with three gigs I think it would spend four hours or more on this.

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        • #5
          You could disable that RAM test in most DOS era PCs.

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          • #6
            I think "Systemd Boot Times From Linux 4.6 To 4.15 Kernels" would be a better title.

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            • #7
              Those Ubuntu times are really slowwwwwwwwww.............



              Code:
              $ inxi -GSCM
              System:    Host: localhost Kernel: 4.14.0-1.fc28.x86_64 x86_64 bits: 64
                         Desktop: Cinnamon 3.6.3  Distro: Fedora release 28 (Rawhide)
              Machine:   Device: desktop System: Gigabyte product: N/A serial: N/A
                         Mobo: Gigabyte model: GA-990X-Gaming SLI-CF v: x.x serial: N/A
                         BIOS: American Megatrends v: F1 date: 01/28/2016
              CPU:       Octa core AMD FX-8350 Eight-Core (-MCP-) cache: 16384 KB
                         clock speeds: max: 4500 MHz 1: 1400 MHz 2: 1400 MHz 3: 1400 MHz
                         4: 4500 MHz 5: 1400 MHz 6: 1400 MHz 7: 3400 MHz 8: 1400 MHz
              Graphics:  Card: NVIDIA GK106 [GeForce GTX 660]
                         Display Server: x11 (X.org 119.5 )
                         drivers: nvidia (unloaded: modesetting,fbdev,vesa,nouveau)
                         Resolution: [email protected]
                         OpenGL: renderer: GeForce GTX 660/PCIe/SSE2
                         version: 4.6.0 NVIDIA 387.22


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              • #8
                Originally posted by FireBurn View Post
                It's far more interesting seeing the different boot times of different linux versions. I can't believe how much faster my RHEL7 VMs start compared to RHEL6 and the super slow RHEL5
                yeah if your VM OS boots in more than 400 msec something is buggy.

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                • #9
                  Originally posted by nll_a
                  I didn't know we could get that impressive userspace startup speed you guys get. I'm using Debian 9, Linux 4.9 and KDE Plasma 5.8 on an SSD and systemd-analyze gives me these numbers:
                  Code:
                  Startup finished in 7.520s (firmware) + 760ms (loader) + 2.441s (kernel) + 18.407s (userspace) = 29.129s
                  Still better than Ubuntu, but yes Plasma definitely could improve its startup a bit. But then again I didn't try any optimizations, that's pretty much all stock.
                  From my experience, startup optimization is something that's fun to visit every couple of years, if only to make things super snappy. Your mileage may vary.

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                  • #10
                    Originally posted by nll_a
                    I didn't know we could get that impressive userspace startup speed you guys get. I'm using Debian 9, Linux 4.9 and KDE Plasma 5.8 on an SSD and systemd-analyze gives me these numbers:
                    Code:
                    Startup finished in 7.520s (firmware) + 760ms (loader) + 2.441s (kernel) + 18.407s (userspace) = 29.129s
                    Still better than Ubuntu, but yes Plasma definitely could improve its startup a bit. But then again I didn't try any optimizations, that's pretty much all stock.
                    $ systemd-analyze
                    Startup finished in 6.595s (firmware) + 2.385s (loader) + 1.425s (kernel) + 2.052s (userspace) = 12.458s

                    Using Kernel 4.9.63 Plasma 5.11.3 (Arch) on my Thinkpad w/ an SSD.

                    On Kernel 4.13.12:

                    $ systemd-analyze
                    Startup finished in 6.595s (firmware) + 1.897s (loader) + 1.927s (kernel) + 1.150s (userspace) = 11.570s

                    Loader time is fuzzy, if autoboot on grub was enabled would both would probably be ~10 seconds.
                    Last edited by bosjc; 21 November 2017, 04:24 PM.

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