topic Re: list kernel parameter max_open_files in Operating System - Tru64 Unix

list kernel parameter max_open_files

lawrenzo_1 — Mon, 28 Apr 2008 14:52:23 GMT

Hi, (I am not familiar with tru64 OS)

I have a system where a user has stated the max open files limit has been reached ....

I want to determine that he is correct ...

I have the following:

root@brcu008a # sysconfig -Q proc open_max_hard
proc:
open_max_hard - type=INT op=CQ min_val=0 max_val=4096

root@brcu008a # ulimit -a
time(seconds) unlimited
file(blocks) unlimited
data(kbytes) 67108864
stack(kbytes) 524288
memory(kbytes) 8155896
coredump(blocks) unlimited
nofiles(descriptors) 4096
vmemory(kbytes) 67108864

root@brcu008a # lsof |grep expre |wc -l
134401

how can I determine that the limit has been reached for that user (root owns the master express daemon)

Thanks

Chris

Re: list kernel parameter max_open_files

Venkatesh BL — Tue, 29 Apr 2008 02:23:31 GMT

Yes, open_max_soft/hard is for the process and if this particular process is owned by root, the user will not be warned about this. May be you should ask him to look at the processes that is run with his credentials.

Check out the man page of 'sys_attrs_proc' for more details.

Re: list kernel parameter max_open_files

Kapil Jha — Thu, 01 May 2008 03:25:15 GMT

You will get alert in messages file and/or syslog.log.
From your lsof output is seems that this parameter has reached because of number of file open in ur system seems to be unusually high.
Ask user to restrat that process , I think as of now no need to increase that parameter.
Just monitor this time.
BR,
Kapil

Re: list kernel parameter max_open_files

lawrenzo_1 — Wed, 07 May 2008 13:08:28 GMT

thanks - user restarted the app as there is a known issue