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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).

Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.

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What is a good boot time? (What's yours?) (lemmy.ml)

submitted 1 year ago* (last edited 1 year ago) by [email protected] to c/[email protected]

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I've been working on my boot time lately, but I realize I really don't have a good handle on what it should be. I am hoping some of you will share yours so we can all get a feel for it. I'm including some HW specs here also because I've heard it can be relevant:

64GB RAM, 2 x 2 TB NVME:

Startup finished in 9.922s (firmware) + 1.151s (loader) + 3.506s (kernel) + 4.006s (userspace) = 18.586s graphical.target reached after 4.003s in userspace.

Edited to add boot time detail

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[–] [email protected] 3 points 1 year ago* (last edited 1 year ago)

# systemd-analyze time

Startup finished in 39.050s (firmware) + 6.680s (loader) + 993ms (kernel) + 3.519s (initrd) + 22.326s (userspace) = 1min 12.570s 
graphical.target reached after 21.680s in userspace.

for me, most time is used until the bootloader shows up, because I had to disable "fast boot" in bios because it made some problems on rebooting. pressing enter in grub could speed up 5 seconds more ;-) gentoo, systemd, 2x2tb nvme, 32 gb ram, 4 hdds. could be faster, but it mostly doesn't matter because I power on the system every morning but don't use it right away

edit: on my server, which is not UEFI, therefore has no "firmware" part:

# systemd-analyze time
Startup finished in 1.814s (kernel) + 47.640s (initrd) + 36.602s (userspace) = 1min 26.057s 
graphical.target reached after 36.602s in userspace.

and on my laptop, which boots fast AF

# systemd-analyze time
Startup finished in 4.242s (firmware) + 14.631s (loader) + 1.737s (kernel) + 3.210s (initrd) + 5.136s (userspace) = 28.959s 
graphical.target reached after 4.936s in userspace.