redhat 9 max number of open files

[Karasik, Vitaly]

There are two limits: max open files per system [file-max] and max open files per process [nofile configured via limits.conf. In fact, there are two limits - soft and hard. As far as I remember, each user can increase his limit up to hard limit.]. As far as I remember, limits.conf doesn't limit root user.

Links:
http://www-106.ibm.com/developerworks/linux/library/l-adfly.html?ca=den-wud  Administer Linux on the fly (Use the /proc filesystem to get a handle on your system


Rgds,
Vitaly
 

> -----Original Message-----
> From: redhat-list-bounces at redhat.com 
> [mailto:redhat-list-bounces at redhat.com] On Behalf Of jan 
> terje tønnessen
> Sent: Sunday, May 29, 2005 12:37 AM
> To: redhat-list at redhat.com
> Subject: redhat 9 max number of open files
> 
> Hi !
> I am running redhat 9 (2.4.20-8) and I have a problem with 
> max number of open files. I am running a database (mnesia) 
> which manages to open approx 1024 files. 
> I have tried different approaches to increase the limit of 
> open files but it does not work. I have tried changing:
> 
> /proc/sys/fs/file-max
> /etc/security/limits.conf
> ulimit -n
> 
> Today I run my process as root (but have also tested with 
> another user).
> Are 'root' treated special regarding the open-files limits ? 
> 
> cat /proc/sys/fs/file-max
> 131072
> 
> /etc/security/limits.conf
> *                soft    nofile          2048
> *                hard    nofile          63536
> 
> ulimit -a
> open files                    (-n) 2048
> 
> ls /proc/<mnesia-pid>/fd/ | wc -l    # gives approx 1024 
> 
> 
> 
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