merge from 0.2.0.x: r15718: Warn the admin if the number of file descriptors on his system is tiny

tor (0.2.1.0-unreleased-1) XXperimental; urgency=low

  * trunk

  * Warn the admin if the number of file descriptors on his system is

    tiny.

 -- Peter Palfrader <weasel@debian.org>  Wed, 19 Mar 2008 20:09:25 +0100

 -- Peter Palfrader <weasel@debian.org>  Mon, 07 Jul 2008 13:25:49 +0200

tor (0.2.0.28-rc-1) experimental; urgency=low

# Let's try to figure our some sane defaults:

if [ -r /proc/sys/fs/file-max ]; then

	system_max=`cat /proc/sys/fs/file-max`

	if [ "$system_max" -gt "80000" ] ; then

		MAX_FILEDESCRIPTORS=32768

	elif [ "$system_max" -gt "40000" ] ; then

		MAX_FILEDESCRIPTORS=16384

	elif [ "$system_max" -gt "10000" ] ; then

		MAX_FILEDESCRIPTORS=8192

	#if [ "$system_max" -gt "80000" ] ; then

		#MAX_FILEDESCRIPTORS=32768

	#elif [ "$system_max" -gt "40000" ] ; then

		#MAX_FILEDESCRIPTORS=16384

	#elif [ "$system_max" -gt "10000" ] ; then

		#MAX_FILEDESCRIPTORS=8192

	if 0; then

		echo fo

	else

		MAX_FILEDESCRIPTORS=1024

		cat << EOF

Warning: Your system has very few filedescriptors available in total.

Maybe you should try raising that by adding 'fs.file-max=100000' to your

/etc/sysctl.conf file.  Feel free to pick any number that you deem appropriate.

Then run 'sysctl -p'.  See /proc/sys/fs/file-max for the current value, and

file-nr in the same directory for how many of those are used at the moment.

EOF

	fi

else

	MAX_FILEDESCRIPTORS=8192