On Thu, 7 Mar 2019 15:06:16 -0500, Michael Stone <mst...@debian.org> wrote: >On Thu, Mar 07, 2019 at 09:02:23PM +0100, Holger Wansing wrote: >>> I'm actually wondering if this is a good idea.. >>> >>> There are lot of other packages installing cronjobs and people, I would >>> assume, expect that they will run. >>> >>> I would personally revert his patch as long as all the cronjobs have not >>> a corresponding systemd .timer >> >>Any thoughts on this? > >What's the downside to having anacron there if a .timer supersedes the >cron job?
.timer units run all in parallel, which causes unpleasant load spikes which can even be more unpleasant if many VMs are spiking together on a virtualization host. That, IMO, makes systemd timer units unsuitable for daily cron jobs, for example, which should be geared to cause as low a load spike as possible. There are even some cron jobs that rely on run-parts' ordering of cron jobs because they depend on each other. This is unlikely to change since the parallel execution of timer units is considered a feature by Upstream. <cynism>Maybe the start-to-finish-time of cron.daily is a benchmark for system speed as important as boot times are</cynism>. Greetings Marc -- -------------------------------------- !! No courtesy copies, please !! ----- Marc Haber | " Questions are the | Mailadresse im Header Mannheim, Germany | Beginning of Wisdom " | Nordisch by Nature | Lt. Worf, TNG "Rightful Heir" | Fon: *49 621 72739834