[Gllug] Increasing file descriptors

[John Hearns]

On Thu, 2002-09-12 at 15:18, Martyn Drake wrote:
> On Thu, 12 Sep 2002 14:24:10 +0200 (CEST) John HEARNS wrote:
> 
> > Edit the file /etc/sysctl.conf and add the line
> > fs.file-max = 32786
> > 
> > /sbin/sysctl -a  tells you what else can be set
> > 
> > On a reboot, the script rc.sysinit should set the values,
> > or you can do it immediately by /sbin/sysctl -p /etc/sysctl.conf
> 
> Thanks for the info, John.  Unfortunately that doesn't appear to have
> done the trick:-
> 

(Smarmy tone definitely switched OFF)

You do realise that you are setting two different things here?
The limit in /proc is a system-wide limit for the total number
of file handles

BTW, I found this a useful explanation
http://www.cs.tau.ac.il/~didi/file-nr.html
So have a look at the numbers in file-nr on your systems too.


The security/limits.conf is a per processor limit.
ulimit -a reports the open files limit of 1024,
after I edited limits.conf too so I think things are OK.
You just can't set it to 'unlimited' after setting limits.
A passing guru please enlighten us?






> [root at akutan fs]# cat /proc/sys/fs/file-max
> 32786
> [root at akutan fs]# ulimit -a
> core file size (blocks)     0
> data seg size (kbytes)      unlimited
> file size (blocks)          unlimited
> max locked memory (kbytes)  unlimited
> max memory size (kbytes)    unlimited
> open files                  1024
> pipe size (512 bytes)       8
> stack size (kbytes)         8192
> cpu time (seconds)          unlimited
> max user processes          4095
> virtual memory (kbytes)     unlimited
> [root at akutan fs]# ulimit -n unlimited
> bash: ulimit: cannot modify limit: Operation not permitted
> 



-- 
Gllug mailing list  -  Gllug at linux.co.uk
http://list.ftech.net/mailman/listinfo/gllug