Brand new computer with SSD and most of the times the system boots really fast, but other times it doesn't. I enter my password and then wait solid minute and a half. I tried to see if there is any pattern, but I am not doing anything specific at those times. DO you have any idea what could be causing the issue ? Is there a way for me to check why it boots so slow ? (preferably using tools that are already in the system and no installation is needed)
After I ran the command suggested by the accepted answer I got the following info :
The kernel is booting from 0 to 2.5 secs
The rest of the files are booting from 2.5 to 3.2 secs
Something called ureadahead.service is deactivating for solid 8 seconds. What could be the cause ?