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Hello DaB
As we discussed yesterday evening I changed minutes for my cronjobs
from 00 to 07. As I explained yesterday only 4 of 5 jobs runned, today
after the change only (!) 2 of 5 jobs runned. So this change did not
help, but made it worse... any ideas? ;))
Thanks and greetings
DrTrigon
On 13.09.2012 22:59, DaB. wrote:
> Hello all,
>
> a few users contacted me about their not running cron-tasks. A
> often found problem is, that the cron-lines of these user are like
> the following:
>
> 0 0 * * * DoSomething
>
> or
>
> 0 * * * * DoSomething
>
> In a ideal world that would be no problem, but in real world that
> CAN be a problem. Why? Because many users have the same idea and
> our submit-hosts fail than with
>
> (CRON) CAN'T FORK (child_process): Not enough space.
>
> Last night 41 tasks were successful started at midnight, an unknown
> number failed. Of course we could just hit the problem with buying
> new hardware, but most time of the day these hosts do idle. So how
> to solve this problem? It's easy: Spread the load. Most times a
> task (like a bot) do not care if it is started a few minutes
> earlier or later. So choose a minute that is unlike 0 and not
> divisible without remainder by 5. If it really does not matter for
> you when your task starts, then take the position of the first
> letter of your user-name and add 2 ("dab" → "d" → 4 → 6). To not
> produce a misunderstanding: If your task REALLY needs to start at
> minute 0 (or at midnight): do it. An of course cron-tasks are
> failing for other reasons to, so contact me (jira-bug preferred) if
> you have a problem.
>
> Sincerely, DaB.
>
>
>
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