On 27.10.21 21:42, Michael Biebl wrote:
Possibly related https://github.com/systemd/systemd/pull/11608
The commit message explains it rather well: https://github.com/systemd/systemd/pull/11608/commits/a87c1d3a979f8c2641471bed93577558a1027a24
core: delay persistent timers by "RandomizedDelaySec=" at boot. Fixes #5659. Currently, if Persistent=true and the machine is off at the scheduled time of the timer unit, the timer will be triggered immediately at the next boot even if RandomizedDelaySec= is specified. As a result, if multiple timers meet that condition, they will be triggered at the same time and too much CPU/IO work makes boot slow down. With this commit, if the scheduled time of the persistent timer has already elapsed at boot, set the time when systemd first started as the scheduled time and RandomizedDelaySec= is applied to it.
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