On Mon, 05 Aug 2019 22:29:41 +0200, Philipp Kern <pk...@debian.org> wrote: >With a systemd timer you can declare conflicts as well as a >lineralization if so needed.
How would that be configured? Should all timers generated from cron.fooly be grouped together (in a target?) and conflict with that very target? >I also question the "knowledgeable people will not have too much >trouble". Export state as granular as possible and there is no guesswork >required. I have no doubt that my co-workers can do this. But I want >their life to be as easy as possible. Amen. >Similarly I wonder what the external monitoring should be apart from >injecting fake jobs around every run-parts unit in this case. Replacing >run-parts with something monitoring-aware? Then why not take the tool >that already exists (systemd)? I think Ian is referring to mechanisms (that I have actually seen) that automatically process incoming e-mails sent from cron in a central place and create alerts or tickets. >And finally, the load spikes: Upthread it was mentioned that >RandomizedDelaySec exists. Generally this should be sufficient to even s >out such effects. I understand that there is a case where you run a lot >of unrelated VMs that you cannot control. In other cases, like laptops >and desktops, it is very likely much more efficient to generate the load >spike and complete the task as fast as possible in order to return to >the low-power state of (effectively) waiting for input. I suspect that >there is a conflict between the two that could be dealt with by >encouraging liberal use of DefaultTimerAccuracySec on the system-level. Amen. >I understand that Debian inherently does not distinguish between the two >cases. I'd still expect a Cloud/Compute provider to offer default images >in any case that could be preconfigured appropriately. I am one of those customers who almost never uses the images offered by the hoster whereever this is possible. Guilty as charged, your honor. >I apologize that I think of this in terms of systemd primitives. But the >tool was written for a reason and a lot of thought went into it. I agree with that, no apology needed, imo. 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
