what happens at 4am ?

m.roth at 5-cent.us m.roth at 5-cent.us
Mon Nov 23 20:34:48 UTC 2009


> Why at this time ?? what happen if change to 00:00 for rotate log for
> example??
>
Because 04:00 is when most other jobs will be done, and even in the US, it
will be the middle of the night, and hopefully the cron jobs will be done
before the day jobs start coming on line, usually around 06:00.

     mark
> Regards
>
> --
> _____________________________________
> Eduardo A. Herrera Leiva
> Administrador de Sistemas
> SubDirección de Operación y Plataforma
> Dirección de Informática
> Pontificia Universidad Católica de Chile
> Teléfono: 56 2 354 1369
>
>
> ESGLinux escribió:
>> Hello,
>>
>> at this time the tasks of cron.daily begin the execution:
>>
>> more /etc/crontab:
>>
>> SHELL=/bin/bash
>> PATH=/sbin:/bin:/usr/sbin:/usr/bin
>> MAILTO=root
>> HOME=/
>>
>> # run-parts
>> 01 * * * * root run-parts /etc/cron.hourly
>> 02 4 * * * root run-parts /etc/cron.daily
>> 22 4 * * 0 root run-parts /etc/cron.weekly
>> 42 4 1 * * root run-parts /etc/cron.monthly
>> ~
>>
>> Greetings
>>
>> ESG
>>
>>
>> 2009/11/23 William Reich <reich at ulticom.com>
>>
>>
>>> Hi...
>>>
>>> On several occasions , on different machines, I have
>>> observed via logs strange system behavior at 4am ( or 4:03am ).
>>>
>>> The load on the machine seems to increase such that my application
>>> complains about not getting enough time to do its job.
>>>
>>> Does anybody know if there is a documented reason for
>>> stuff to run at this moment in the day ?
>>>
>>> I am still trying to "google it"...
>>>
>>> thanks
>>>
>>> wr
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>>>
>>>
>
>
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