Re: [PATCH 1/1] fstrim: add random delay to systemd timer

[Ruediger Meier <sweet_f_a@gmx.de>]

On Monday 17 December 2018, Christian Hesse wrote:
> The fstrim timer tends to fire simultaneously with other timers like
> updatedb. As fstrim is not time criticaly let's add a random delay of
> up to an hour.
>
> Signed-off-by: Christian Hesse <mail@eworm.de>
> ---
>  sys-utils/fstrim.timer | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/sys-utils/fstrim.timer b/sys-utils/fstrim.timer
> index 3a3762d5c..dd3328e2a 100644
> --- a/sys-utils/fstrim.timer
> +++ b/sys-utils/fstrim.timer
> @@ -5,6 +5,7 @@ Documentation=man:fstrim
>  [Timer]
>  OnCalendar=weekly
>  AccuracySec=1h
> +RandomizedDelaySec=1h

Looks like it could still run simultaneously with other timers at random 
times. So this does not seem to be a real fix for the problem described 
in your commit message.

You may look at /etc/cron.{hourly,daily,weekly,monthly} if you want to 
run such jobs one after the other.

cu,
Rudi