#!/bin/sh -
#
#   openfiles
#
#   Copyright (C) 2005 by
#   Oliver Fromme  <olli@fromme.com>  <olli@secnetix.de>
#   All rights reserved.
#   Standard 2-clause BSD license and disclaimer applies.
#
#   This script lists processes sorted by the number of
#   open file descriptors.  Works on FreeBSD 4 and 5.
#

fstat |
awk '($3!="PID"){print $3, $2}' |
sort |
uniq -c |
sort -n |
awk '
	function pr (c1, c2, c3) {
		printf "%s\t%s\t%s\n", c1, c2, c3
	}
	BEGIN {
		pr("#DESCR", "PID", "CMD")
	}
	{
		pr($1, $2, $3)
		s += $1
	}
'

prsys()
{
	SC=$1
	shift
	printf '%s\t%s\n' `sysctl -n $SC` "$*"
}

prsys kern.openfiles "Total number of descriptors in use"
prsys kern.maxfilesperproc "Maximum number of descriptors per process"
prsys kern.maxfiles "Maximum number of descriptors system-wide"

#--