How to increase system boot speed?

Question

linux

I tested the read speed of the hard disk with the command sudo hdparm -Tt /dev/sda. And received

Timing cached reads:   20390 MB in  2.00 seconds = 10204.16 MB/sec
 Timing buffered disk reads: 332 MB in  3.01 seconds = 110.37 MB/sec

. The system boots in 2 minutes without grab. How can I increase the system boot speed? I use arch linux kde 5 shell. 1 gb hangs in RAM after loading.

Answer 1

#systemd-analyze blame
#systemd-analyze critical-chain

Answer 2

See what slows down when loading. I have even on the atom - loading 3-4 seconds, without graphics - Ubuntu. With graphics, seconds are 3-5 slower.
Most likely, some service is slowing down, or incorrectly configured DNS servers, which affects all network services.

Answer 3

Put the system to sleep instead of shutting it down completely.

Answer 4

https://wiki.archlinux.org/index.php/Improve_boot_...
And from there, take a look at the " Systemd " link.