[systemd-bugs] [Bug 82084] New: Allow for random startup delay (or even spread) in timer units

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=82084

          Priority: medium
            Bug ID: 82084
          Assignee: systemd-bugs at lists.freedesktop.org
           Summary: Allow for random startup delay (or even spread) in
                    timer units
        QA Contact: systemd-bugs at lists.freedesktop.org
          Severity: enhancement
    Classification: Unclassified
                OS: Linux (All)
          Reporter: freedesk.apriori at spamgourmet.com
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: general
           Product: systemd

It would be useful if timer units could be delayed randomly within, or spread
out evenly across, a given interval starting at the time specified in the
OnCalendar/etc. setting. This would help to spread out I/O intensive jobs and
avoid disk thrashing.

In some discussions, the AccuracySec setting has been suggested as the
equivalent to cron’s random delay feature, but as the man page says, the
AccuracySec delay is synchronized across all timers, so that jobs will still
launch in parallel.

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