10-28-2016
Quote:
Originally Posted by
jlliagre
If the event really happened and has been logged, yes.
The dmesg command retrieving its data from /var/adm/messages.
It is a very common situation. What often happens is not /tmp being filled but the virtual memory being exhausted. /tmp being full (or almost full) is a side effect. It is also perfectly possible to have a system exhibiting the symptoms you describe without virtual memory exhaustion. If you haven't enough RAM available for the active memory to be stored in it, performance will degrade. If the deficit is very high, the system might became essentially unresponsive.
Thank you very much for the explanation. If it was the case do you think it is possible to find somewhere some log that registered the event in order to discover the root cause?
Our boss is pushing a lot to know which was the root cause and I am not really sure we can Ben able to do it
Last edited by rbatte1; 10-28-2016 at 07:34 AM..
Reason: Smartened up formatting
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dmesg(1M) dmesg(1M)
NAME
dmesg - collect system diagnostic messages to form error log
SYNOPSIS
DESCRIPTION
looks in a system buffer for recently printed diagnostic messages and prints them on the standard output. The messages are those printed
by the system when unusual events occur (such as when system tables overflow or the system crashes). If the argument is specified, com-
putes (incrementally) the new messages since the last time it was run and places these on the standard output. This is typically used with
(see cron(1)) to produce the error log by running the command:
every 10 minutes.
The arguments and allow substitution for the defaults and where should be a file containing the image of the kernel virtual memory saved by
the savecrash(1M) command and should be the corresponding kernel. If the system is booted with a kernel other than /stand/vmunix say
/stand/vmunix_new, must be passed this name, the command must be,
WARNINGS
The system error message buffer is of small, finite size. is run only every few minutes, so there is no guarantee that all error messages
will be logged.
AUTHOR
was developed by the University of California, Berkeley.
FILES
error log (conventional location)
memory scratch file for option
special file containing the image of kernel virtual memory
the kernel, system name list
SEE ALSO
savecrash(1M).
dmesg(1M)