From owner-freebsd-hackers@FreeBSD.ORG  Sun Aug 21 13:30:56 2005
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From: Sam Lawrance <boris@brooknet.com.au>
To: Divacky Roman <xdivac02@stud.fit.vutbr.cz>
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Date: Sun, 21 Aug 2005 23:31:01 +1000
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Cc: hackers@freebsd.org
Subject: Re: number of simultanously opened files
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On Sun, 2005-08-21 at 11:48 +0200, Divacky Roman wrote:
> hi
> 
> I wrote this:
> witten /tmp# cat x.c
> #include <stdio.h>
> #include <fcntl.h>
> #include <sys/limits.h>
> 
> #define MAX     100000
> main()
> {
>       int i = MAX;
> 
>          for (; i>0; i--) {
> 	          if (open("/dev/null", O_RDONLY) == -1) {
> 		              printf("FUCK: %i\n", MAX-i);
> 			      printf("FUCK: %i\n", i);
> 			      break;
> 		}
> 	}
> getchar();
> }
> 
> set:
> 
> witten ~# sysctl kern.maxfiles=100000
> kern.maxfiles: 100000 -> 100000
> witten ~# sysctl kern.maxfilesperproc=100000
> kern.maxfilesperproc: 100000 -> 100000
> witten ~#
> 
> but I still cannot open more than 7319 files simultaneously. pls can you tell
> me why?

Possibly because maximum open files is a per-process value that is set
at process creation, and also inherited, so you won't see the change in
existing processes.

Try setting it before boot, or maybe restarting a login on a vty might
work.

Cheers
Sam


Sam Lawrance                            lawrance@FreeBSD.org
ph +61 0425 228 579                    boris@brooknet.com.au