Locking shared memory

[Mike Kearey]

Allen, Jack wrote:

> I do not think the error is because of the first explanation of ENOMEM
> So my question is based on the second one. 
> 
> Is there a kernel or vm parameter that controls how much memory a
> process can utilize? 
> 
> I am running RH AS 4.4 32 bit with 2GB of physical memory. 
> 
> Thanks in advance: 
> Jack Allen 
> 

G'day Jack,

There is memlock limit in shell, changed using the ulimit command from
bash. See ulimit -l:

$ ulimit -l
32


The actual hard and soft limits are controlled on a Red Hat system using
the pam_limits pam module, using the config file /etc/security/limits.conf

Check the doc's from RHEL4 for the pam module for details :

/usr/share/doc/pam-0.77/txts/README.pam_limits

This may well be where the ENOMEM came from, as the default limit that a
user may lock memory is 32kB.

Cheers,
Michael