With only snapd snap preseeded I get boot times very similar to ``` ubuntu@cloudimg:~$ systemd-analyze Startup finished in 3.757s (kernel) + 12.458s (userspace) = 16.216s graphical.target reached after 12.061s in userspace. ```
Which shows we are still taking a boot time hit of ~1.5 seconds... however with snaps snap preseeded we are seeing a much faster "first snap" install. From ~21 seconds down to 17 seconds. To summarise. * Definitely faster boot without any snaps preseeded @ ~1.5 seconds in my tests * Still slower boot with only snapd snap preseeded but faster first snap install time by about ~4 seconds I have been unable to get any data on LXD usage numbers on cloud/server to help. So the question remains do we want faster boot by ~1.5 seconds (based on my test environment) at the expense of first snap install speed improvements of between 4 (if only snapd snap is preseeded) seconds and up to ~15 seconds (if a core snap is also preseeded)? @vorlon @jchittum @paelzer given the above findings are you still -1 on any snap preseeding? Based on the data, I vote not to preseed any snaps. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to ubuntu-meta in Ubuntu. https://bugs.launchpad.net/bugs/2051572 Title: Always preseed core and snapd snap in server seed Status in ubuntu-meta package in Ubuntu: New Status in ubuntu-meta source package in Noble: New Bug description: In removing the LXD snap from preseeding in the server seed for Ubuntu 24.04 as part LP #2051346 [1] we also removed the snapd snap and the core22 snap. This means that are subsequent snap install, like LXD, will take much longer than expected for a non minimized image. Time taken to install LXD snap using the lxd-installer package without snapd and core22 preinstalled/seeded ``` ubuntu@cloudimg:~$ time sudo lxd --version Installing LXD snap, please be patient. 5.19 real 0m29.107s user 0m0.006s sys 0m0.005s ``` Time taken to install LXD snap using the lxd-installer package with snapd and core22 already installed. ``` ubuntu@cloudimg:~$ time sudo lxd --version Installing LXD snap, please be patient. 5.19 real 0m15.034s user 0m0.005s sys 0m0.005s ``` This is a significant difference and for a workload we intend to remain as a core tested and tracked workload. As such I propose we re- introduce core22 and snapd snaps to our seed. LXD do intend to move to the core24 snap as their base as I'm sure snapd does too so when that does happen we need to update the preseeded core snap. This bug is to track the work of making that change in the server seed @ https://git.launchpad.net/~ubuntu-core-dev/ubuntu- seeds/+git/ubuntu/tree/server#n69 [1] https://bugs.launchpad.net/ubuntu/+source/ubuntu-meta/+bug/2051346 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-meta/+bug/2051572/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
