proc: table is full

[amipankaj]

hi experts,

i got following error messages in syslog.

syslog: Java: Number of open files: 1024
syslog: Java: Maximum number of allowed open files: 1024
vmunix: proc: table is full
prngd[2180]: Could not fork: Resource temporarily unavailable

These are the last messages i got from old syslog. The system rebooted.

is the system rebooted due to these errors?

waiting for your response.

thanks and regards,
Roy

[Rajeev Shukla]

Hi Roy,
The system will not reboot by itself because of these error. What it means is that the process table was full at that moment and no new process could be forked or started.
Check if someone retuned the Kernel to increase the nproc value (which will fix the issue) and if the kernel parameter was change then of-course the system will reboot.
Check the /etc/shutdownlog file also

Cheers
Rajeev

[amipankaj]

thanks rajeev. but i am not getting anything on shutdownlog for 8th july.


# who -b
. system boot Jul 8 16:56

the last line in shutdownlog is..

01:43 Fri Jun 27, 2008. Reboot:

PS: the errors repeated in syslog many times.

[Kenan Erdey]

Hi,

try last -R to find out who logined to the system before the reboot.

Kenan.

[Jeeshan]

Hi Roy

seems that your java session has open lot more sessions and requested for open more files than its permittent.

check your kernel parameters settings of nfile.

[Ivan Krastev]

Check /etc/shutdownlog for reboot and OLDsyslog for any errors.

regards,
ivan

[Dennis Handly]

>is the system rebooted due to these errors?

Or crashed? But your system is next to useless unless you have a terminal logged on as root and you know which java to kill.

[Jeeshan]

It's possible that a ulimit has been issued which has reduced the per process maximum number of files. Normally, you should set maxfiles_lim > maxfiles.

Before invoking java, issue a
ulimit -Sn
and ulimit -Hn
to display the soft and hard limits, respectively.

[XIAODANWU]

you must change NPROC parameter

[Robin T. Slotten]

Run "sar -v" or "sar -v 5 5" if you have not been keeping statistics.

That will tell you if you are close to the limit. (which sounds likely)
proc-sz The current-size and maximum-size of the process table;

If it is you will have to increase the kernel parameter NPROC

Rob...