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
- It does not matter unless you reboot your machine every hour. 
- Literally don’t personally care about boot time, as long as it’s under 30-60s (currently at about ~5?), and since I reboot like once a month, I don’t really pay much attention to it. How come you want to minimize that so much? Any particular target you want to achieve? - I really just wanted to get a gauge on what a good range is. For my machine, I just want to see how low I can get it without sacrificing needed features or maintainability. 10s would be amazing. 
 
- Stop rebooting, problem solved! 
- Linux 6.5 Should Spend Less Time Waiting On PCIe Devices: https://www.phoronix.com/news/Linux-6.5-PCI 
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a few minutes. Usually I expect 2, claim 5, but when updating gitlab or something equally bloated I’ll need 7-10 for the patch-and-bounce. 
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no one cares whether it takes a minute extra while you’re getting coffee or when it’s in the middle of the night. The #1 selling feature of systemd is thus moot and it’s truly just a piece of hot garbage. 
 
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- # 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.- That seems like a lot of time in firmware! The laptop time is amazing though. 
 
- Last time I rebooted the laptop it was about 30 seconds… six months ago. - Seriously guys, why the boot time that important nowadays ? 
- About twenty seconds from ‘power button’ to ‘desktop’ on my laptop, about two minutes on my desktop, mainly because it’s got about 9 disks in it in various RAID patterns, and a discrete graphics card and fancy USB audio and all that shit needs initialised. Doesn’t matter much, they both sleep / hibernate and rarely need restarted - Interesting - I also have a discrete GPU and a USB interface. Do these things add much time? - We’re talking seconds, but on top of ‘twenty seconds’ then it’s a large fraction of the total. The real problem is mounting disks in RAID for me, though - takes quite a while. 
 
 
- My server takes about a minute but it’s a dual core Atom with 1.8gb of ram >_< 
- I don’t care about boot time. I switch her on and then go and grab a coffee, by the time I’m done she’s finished booting. 






