For example look at .var.log.apt.history.log.txt
Many packages take less than a second to install. But in between each
one is a 15 to 20 second delay. That delay is the time during which apt-
check is running.
You can watch this happening by running "watch systemctl status apt-
daily-upgrade" and looking at the processes in the cgroup:
```
~$ systemctl status apt-daily-upgrade
● apt-daily-upgrade.service - Daily apt upgrade and clean activities
Loaded: loaded (/lib/systemd/system/apt-daily-upgrade.service; static)
Active: activating (start) since Tue 2024-05-14 23:01:03 BST; 1h 29min ago
TriggeredBy: ● apt-daily-upgrade.timer
Docs: man:apt(8)
Main PID: 29655 (apt.systemd.dai)
Tasks: 11 (limit: 9299)
Memory: 1.6G
CPU: 1h 12min 57.651s
CGroup: /system.slice/apt-daily-upgrade.service
├─ 29655 /bin/sh /usr/lib/apt/apt.systemd.daily install
├─ 29659 /bin/sh /usr/lib/apt/apt.systemd.daily lock_is_held
install
├─ 29688 /usr/bin/python3 /usr/bin/unattended-upgrade
├─181903 /usr/bin/python3 /usr/bin/unattended-upgrade
├─181970 /usr/bin/python3 /usr/bin/unattended-upgrade
├─181978 sh -c "if [ -d /var/lib/update-notifier ]; then touch
/var/lib/update-notifier/dpkg-run-stamp; fi;
/usr/lib/update-notifier/update-motd-updates-available 2>/dev/null || true"
├─181980 /bin/sh -e
/usr/lib/update-notifier/update-motd-updates-available
├─181994 /usr/bin/python3 /usr/lib/update-notifier/apt-check
--human-readable
└─182339 /usr/bin/python3 -Es /usr/bin/lsb_release -c -s
```
Then manually running "time apt-check"
```
~$ time /usr/lib/update-notifier/apt-check --human-readable
Expanded Security Maintenance for Applications is not enabled.
269 updates can be applied immediately.
45 of these updates are standard security updates.
To see these additional updates run: apt list --upgradable
33 additional security updates can be applied with ESM Apps.
Learn more about enabling ESM Apps service at https://ubuntu.com/esm
real 0m12.916s
user 0m11.012s
sys 0m1.885s
```
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/2065739
Title:
Unnattended upgrades take a long time due to excessive running of
"apt-check"
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/unattended-upgrades/+bug/2065739/+subscriptions
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