Noticed 18.04 vs 20.04 speed

[Hund]

On March 3, 2021 8:42:17 AM GMT+01:00, Ralf Mardorf via ubuntu-users <ubuntu-users at lists.ubuntu.com> wrote:
>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
>
>-- 
>ubuntu-users mailing list
>ubuntu-users at lists.ubuntu.com
>Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-users

I see. I thought it would be a good tool. I don't use systemd myself, so I'm not very knowledgeable about it.

I guess then that bootchart could be a good tool for this?

--
Hund