Bug#997943: systemd: Persistent attribute of timer is ignored

[Michael Biebl]

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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