Noticed 18.04 vs 20.04 speed

[Ralf Mardorf]

On Wed, 03 Mar 2021 07:44:08 +0100, Hund wrote:
>Have you looked at with `systemd-analyze blame`?

JFTR it's tricky to read the output of blame. From the syslinux boot
menu to the lightdm greeter startup on my machine last time needed
likely less than 10 seconds. IOW fstrim [1] was still running and
alice-dhcp [1] still didn't make Internet access available.

[1]
[rocketmouse at archlinux ~]$ systemd-analyze blame 
8min 29.252s fstrim.service                        
     14.150s alice-dhcp.service                    
      7.070s man-db.service                        
      3.000s lvm2-monitor.service                  
      2.364s dev-sdc1.device                       
       906ms udisks2.service                       
       499ms systemd-hwdb-update.service           
       435ms systemd-random-seed.service           
       388ms systemd-fsck at dev-sda5.service         
       377ms ldconfig.service                      
       306ms upower.service                        
       260ms accounts-daemon.service               
       230ms user at 1000.service                     
       202ms systemd-udev-trigger.service          
       192ms rtirq.service                         
       188ms systemd-logind.service                
       184ms lightdm.service                       
       177ms logrotate.service                     
       167ms systemd-fsck at dev-sda11.service        
       159ms polkit.service                        
       158ms systemd-journal-flush.service         
       135ms systemd-modules-load.service          
       126ms systemd-tmpfiles-clean.service        
       112ms systemd-binfmt.service                
       101ms systemd-fsck-root.service             
        90ms systemd-journald.service              
        82ms systemd-udevd.service                 
        82ms dev-sdc4.swap                         
        71ms systemd-tmpfiles-setup.service        
        69ms modprobe at fuse.service                 
        69ms modprobe at configfs.service             
        68ms dev-hugepages.mount                   
        67ms dev-mqueue.mount                      
        67ms sys-kernel-debug.mount                
        64ms sys-kernel-tracing.mount              
        63ms kmod-static-nodes.service             
        49ms systemd-sysusers.service              
        47ms systemd-fsck at dev-sdb12.service        
        45ms tmp.mount                             
        38ms systemd-tmpfiles-setup-dev.service    
        34ms colord.service                        
        33ms systemd-machined.service              
        32ms proc-sys-fs-binfmt_misc.mount         
        23ms home-music.mount                      
        22ms sys-kernel-config.mount               
        21ms alsa-restore.service                  
        21ms atop-rotate.service                   
        19ms systemd-journal-catalog-update.service
        18ms mnt-music.mount                       
lines 1-49