diff --git a/comparecfg.sh b/comparecfg.sh
new file mode 100755
index 0000000..55d8e32
--- /dev/null
+++ b/comparecfg.sh
@@ -0,0 +1,48 @@
+#!/bin/sh
+
+showall=0
+
+if [ $# -gt 0 ]; then
+  if [ $1 == "-a" ]; then
+    showall=1
+  fi
+fi
+
+chkcfg() {
+
+  cfg=${1}; shift;
+  if [ ! -f ${cfg} ]; then
+    "cannot open ${cfg}"
+    return
+  fi
+
+  echo
+  echo "===> Comparing ${cfg}"
+  echo
+
+  for i in `cat ${cfg} | grep '=' | grep '\.' | sed 's/^#//' | cut -f1 -d=`; do
+    desc=`sysctl -nd ${i} 2>/dev/null`
+    cmdresult=0
+    curval=`sysctl -n ${i} 2>/dev/null`
+    cmdresult=$?
+    cfgval=`grep ${i}= ${cfg} | tail -n1 |  cut -f2 -d= | sed 's/\"//g'`
+
+    if [ X${curval} != X${cfgval} ] || [ ${showall} -eq 1 ]; then
+
+      if [ ${cmdresult} -ne 0 ]; then
+        curval="** sysctl returned error**"
+      fi
+
+
+      echo "      Name: ${i}"
+      echo "      Desc: ${desc}"
+      echo "   Current: ${curval}"
+      echo "    Config: ${cfgval}"
+      echo
+    fi
+  done
+}
+
+chkcfg "/etc/sysctl.conf"
+chkcfg "/boot/loader.conf"
+
diff --git a/cpuflags b/cpuflags
new file mode 100755
index 0000000..ecf7d47
--- /dev/null
+++ b/cpuflags
@@ -0,0 +1,33 @@
+#!/bin/sh
+
+COMPILERS="clang gcc gcc45 gcc46 gcc47 gcc48 gcc49 gcc5 gcc6"
+
+check_compilers()
+{
+ echo "Looking for available C compilers..."
+ for C in ${COMPILERS}
+ do
+   P=`which ${C} 2>&1`
+   RES=$?
+   if [ $RES -eq 0 ]; then
+     echo " - Found ${C} at ${P}"
+     check_flags ${P}
+     echo
+   fi
+ done
+}
+
+check_flags()
+{
+ C=$1; shift;
+ printf "   Compiler flags:\t"
+ if `echo ${C} | grep -q clang$`
+ then
+        ${C} -march=native -E -v - < /dev/null 2>&1 | grep cc1 | grep -o -E '\-target-cpu ([a-zA-Z0-9=\-]+)'
+ else
+        ${C} -march=native -E -v - < /dev/null 2>&1 | grep cc1 | grep -o -E '\-march[=]*[a-zA-Z0-9]+'
+ fi
+}
+
+
+check_compilers
diff --git a/getlockprof b/getlockprof
new file mode 100755
index 0000000..729c266
--- /dev/null
+++ b/getlockprof
@@ -0,0 +1,40 @@
+#!/bin/sh
+
+#
+# You need to make sure kernel profiling in enabled by adding 
+# following line to kernel configuartion and rebuilding the kernel
+# and modules:
+#
+# options		LOCK_PROFILING
+#
+
+OUTFILE=`mktemp -t kernlock`
+
+if [ $# -lt 1 ]; then
+	echo "Syntax: $0 [ wait_seconds ]"
+	exit 1
+fi
+
+WAITTIME=${1}
+
+get_prof()
+{
+	sysctl -q debug.lock.prof.reset=1
+	sysctl -q debug.lock.prof.enable=1
+	echo "Profiling lock information for ${WAITTIME} seconds..."
+	sleep ${WAITTIME}
+	sysctl -q debug.lock.prof.enable=0
+	sysctl debug.lock.prof.stats > ${OUTFILE}
+}
+
+show_prof()
+{
+	{
+		head -2 ${OUTFILE} 
+		cat ${OUTFILE} | sort -rn -k4 
+	} | ${PAGER}
+}
+
+get_prof
+show_prof
+echo "Raw output save to ${OUTFILE}"
diff --git a/getpmc.sh b/getpmc.sh
new file mode 100755
index 0000000..0e821de
--- /dev/null
+++ b/getpmc.sh
@@ -0,0 +1,43 @@
+#!/bin/sh
+#
+check_hwpmc() {
+
+# should fail if hwpmc is not availble
+
+}
+
+KERNDIR="/boot/kernel"
+
+#
+# main
+#
+check_hwpmc
+
+if [ $# -lt 1 ]; then
+	echo "No event-spec given. Assuming CPU_CLK_UNHALTED_CORE..."
+	EVENT="CPU_CLK_UNHALTED_CORE"
+else 
+	EVENT=${1}
+fi
+
+if [ $# -lt 2 ]; then
+	echo "No sleep time specified. Assuming 10 seconds..."
+	SLEEP="10"
+else
+	SLEEP=${2}
+fi
+
+echo "Instrumenting for ${SLEEP} seconds..."
+pmcstat -S ${EVENT} -O ${EVENT}.pmc sleep ${SLEEP}
+echo "Extracting stack trace..."
+pmcstat -R ${EVENT}.pmc -z100 -G ${EVENT}.stacks.txt
+echo "Annotating..."
+pmcannotate -k ${KERNDIR} ${EVENT}.pmc ${KERNDIR}/kernel > ${EVENT}.annotated.txt
+echo "Extracting gprof(1) profile data..."
+pmcstat -R ${EVENT}.pmc -g
+gprof -K ${KERNDIR}/kernel ${EVENT}/kernel.gmon > ${EVENT}.gprof-kernel.txt
+
+if [ -d ${EVENT} ]; then
+	echo "Cleaning up..."
+	rm -r ${EVENT}
+fi	
diff --git a/ixirq.sh b/ixirq.sh
new file mode 100755
index 0000000..95f0c57
--- /dev/null
+++ b/ixirq.sh
@@ -0,0 +1,34 @@
+#!/bin/sh
+#
+# WARNING: Binding IRQs to a core will put system at risk of instability
+#          even after unbinding, and will require a reboot
+#
+basedir=`dirname $0`
+binding="ix0:0:16 ix0:1:17 ix0:2:18 ix0:3:19 ix0:4:20 ix0:5:21 ix0:6:22 ix0:7:23 ix1:0:24 ix1:1:25 ix1:2:26 ix1:3:27 ix1:4:28 ix1:5:29 ix1:6:30 ix1:7:31"
+release=0
+
+# if "-r" is given as parameter, threads affinity will be unbound
+
+if [ $# -gt 0 ]; then
+  if [ $1 = "-r" ]; then
+    release=1
+  fi
+fi
+
+
+for l in ${binding}; do
+    if [ -n "$l" ]; then
+        iface=`echo $l | cut -f 1 -d ":"`
+        queue=`echo $l | cut -f 2 -d ":"`
+        cpu=`echo $l | cut -f 3 -d ":"`
+        irq=`vmstat -i | grep "${iface}:que ${queue}" | cut -f 1 -d ":" | sed "s/irq//g"`
+		if [ $release -gt 0 ]; then
+	        echo "Binding ${iface} queue #${queue} (irq ${irq}) -> CPU${cpu}"
+	        cpuset -l $cpu -x $irq
+		else
+	        echo "Unbinding ${iface} queue #${queue} (irq ${irq}) -> CPU${cpu}"
+        	cpuset -l all -x $irq
+		fi
+    fi
+done
+
diff --git a/ixque.sh b/ixque.sh
new file mode 100755
index 0000000..aff971f
--- /dev/null
+++ b/ixque.sh
@@ -0,0 +1,37 @@
+#!/bin/sh
+
+#
+# Bind interface queues to different cpu cores to reduce
+# context switching and cpu cache misses
+#
+
+# start from this core 
+cpu=0
+interfaces="ix0 ix1"
+release=0
+
+# if "-r" is given as parameter, threads affinity will be unbound
+
+if [ $# -gt 0 ]; then
+  if [ $1 = "-r" ]; then
+    release=1
+  fi
+fi
+
+
+basedir=`dirname $0`
+for int in ${interfaces}; do
+  for t in `procstat -ak | grep "${int} que" | awk '{print $2}'`; do
+    if [ -n "$t" ]; then
+      if [ $release -gt 0 ]; then
+        echo "Unbinding ${int} kernel queue (thread #${t})"
+        cpuset -l all -t $t
+      else
+        echo "Binding ${int} kernel queue (thread #${t}) -> CPU${cpu}"
+        cpu=`expr $cpu + 1`
+        cpuset -l $cpu -t $t
+      fi
+    fi
+  done
+done
+
diff --git a/mbuf_autotune.sh b/mbuf_autotune.sh
new file mode 100755
index 0000000..1c75d5f
--- /dev/null
+++ b/mbuf_autotune.sh
@@ -0,0 +1,65 @@
+#!/bin/sh
+
+#
+# Copyright (c) 2016 Babak Farrokhi.  All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS" AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+#
+
+#
+# Suggest optimum value for kern.ipc.*
+# based on /sys/kern/kern_mbuf.c
+#
+
+MCLBYTES=2048
+MSIZE=256
+PHYSMEM=`sysctl -n hw.physmem`
+PAGE_SIZE=`sysctl -n hw.pagesize`
+VM_KMEM_SIZE=`sysctl -n vm.kmem_size`
+REALMEM=${VM_KMEM_SIZE}
+MAXMBUFMEM=`expr $REALMEM / 4 \* 3`
+MJUMPAGESIZE=$PAGE_SIZE
+MJUM9BYTES=`expr 9 \* 1024`
+MJUM16BYTES=`expr 16 \* 1024`
+
+NMBCLUSTERS=`expr $MAXMBUFMEM / $MCLBYTES / 4`
+NMBJUMBOP=`expr $MAXMBUFMEM / $MJUMPAGESIZE / 4`
+NMBJUMBO9=`expr $MAXMBUFMEM / $MJUM9BYTES / 6`
+NMBJUMBO16=`expr $MAXMBUFMEM / $MJUM16BYTES / 6`
+
+echo "Suggested settings:"
+echo "kern.ipc.maxmbufmem=$MAXMBUFMEM"
+echo "kern.ipc.nmbclusters=$NMBCLUSTERS"
+echo "kern.ipc.nmbjumbop=$NMBJUMBOP"
+echo "kern.ipc.nmbjumbo9=$NMBJUMBO9"
+echo "kern.ipc.nmbjumbo16=$NMBJUMBO16"
+
+NMBUFS=`sysctl -n kern.ipc.nmbufs`
+NMMAX1=`expr $NMBCLUSTERS + $NMBJUMBOP + $NMBJUMBO9 + $NMBJUMBO16`
+NMMAX2=`expr $MAXMBUFMEM / $MSIZE / 5`
+if [ $NMMAX1 -gt $NMMAX2 ]; then
+	NMBUFS=$NMMAX1
+else
+	NMBUFX=$NMMAX2
+fi
+echo "kern.ipc.nmbufs=$NMBUFS"
diff --git a/munin-plugin-deploy.sh b/munin-plugin-deploy.sh
new file mode 100755
index 0000000..56353a7
--- /dev/null
+++ b/munin-plugin-deploy.sh
@@ -0,0 +1,22 @@
+#!/bin/sh
+
+MUNIN_LIBDIR="/usr/local/share/munin"
+PLUGIN_PATH=${MUNIN_LIBDIR}/plugins
+INSTALL_PATH=/usr/local/etc/munin/plugins
+export MUNIN_LIBDIR
+
+# cleanup installed plugins
+find ${INSTALL_PATH} -type l -delete
+
+# install plugins
+for p in `find ${PLUGIN_PATH} -type f -perm +u+x`; do
+	pname=`basename $p`
+	if echo ${pname} | grep -q _$; then # plugin name ends with underline
+		params=`${p} suggest` || ( echo "failed to collect suggestion from ${pname} plugin"; exit 1)
+		for x in ${params}; do
+			ln -vs ${p} ${INSTALL_PATH}/${pname}${x}
+		done
+	else # not a wildcard plugin
+		ln -vs ${p} ${INSTALL_PATH}/${pname}
+	fi
+done
diff --git a/nullroute b/nullroute
new file mode 100755
index 0000000..01a8b08
--- /dev/null
+++ b/nullroute
@@ -0,0 +1,114 @@
+#!/bin/sh
+#
+# Copyright (c) 2015 Babak Farrokhi.  All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS" AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+#
+# this script nullroutes a give CIDR
+#
+#
+
+ROUTE="/sbin/route"
+NETSTAT="/usr/bin/netstat"
+GREP="/usr/bin/grep"
+AWK="/usr/bin/awk"
+CFG="/usr/local/etc/nullroute.conf"
+
+nullroute() {
+	local ADDR=${1}; shift;
+
+	${ROUTE} add -net ${ADDR} 127.0.0.1 -blackhole
+}
+
+delroute() {
+	local ADDR=${1}; shift;
+	
+	${ROUTE} delete ${ADDR}
+}
+
+showroute() {
+	${NETSTAT} -rn | ${GREP} "SB " | ${AWK} '{print $1}'
+}
+
+loadroutes() {
+	if [ ! -f ${CFG} ]; then
+		echo "Cannot open ${CFG}"
+		exit 1
+	fi
+	
+	for R in `cat ${CFG} | ${GREP} -E -v '^[[:space:]]*$'`; do
+		nullroute ${R}	
+	done
+}
+
+saveroutes() {
+	showroute > ${CFG} && echo "configuration saved to ${CFG}"
+}
+
+flush() {
+	for R in `${NETSTAT} -rn | ${GREP} "SB " | ${AWK} '{print $1}'`; do
+		delroute ${R}
+	done	
+}
+
+help() {
+	echo "$0 [ add <host> | del <host> | show | load | save | flush ]"
+}
+
+if [ $# -lt 1 ]; then
+	help
+	exit 1
+fi
+
+case ${1} in
+	add)
+		if [ x${2} == x ]; then
+			help
+			exit 1
+		fi
+		nullroute ${2}
+		;;
+	del)
+		if [ x${2} == x ]; then
+			help
+			exit 1
+		fi
+		delroute ${2}
+		;;
+	show)
+		showroute
+		;;
+	load)
+		loadroutes
+		;;
+	save)
+		saveroutes
+		;;
+	flush)
+		flush
+		;;
+	*)
+		help
+		;;
+esac		
+
diff --git a/splitgateway b/splitgateway
new file mode 100755
index 0000000..d7a7dbc
--- /dev/null
+++ b/splitgateway
@@ -0,0 +1,37 @@
+#!/bin/sh
+#
+# Split default route into 8 smaller routes to avoid
+# lock contention during route lookup
+#
+# If a default router is not specified, it will be 
+# taken from rc.conf.
+#
+
+ROUTECMD="/sbin/route -q "
+ROUTES="0.0.0.0/3 32.0.0.0/3 64.0.0.0/3 96.0.0.0/3 128.0.0.0/3 160.0.0.0/3 192.0.0.0/3 224.0.0.0/3"
+
+if [ $# -lt 1 ]; then
+	echo "syntax: $0 [start|stop]"
+	exit 1
+fi
+
+case $1 in
+	start)
+		GW=`sysrc -n defaultrouter`
+		echo "splitgateway: Assuming ${GW} from rc.conf..."
+
+		for R in ${ROUTES}; do
+			${ROUTECMD} add -net ${R} ${GW}
+		done
+		;;
+	stop)
+		for R in ${ROUTES}; do
+			${ROUTECMD} delete -net ${R}
+		done
+		;;
+esac
+
+
+# no need to remove default route since it will never be matched
+#${ROUTECMD} delete default
+
diff --git a/tuning b/tuning
new file mode 100755
index 0000000..b54ade7
--- /dev/null
+++ b/tuning
@@ -0,0 +1,270 @@
+#!/bin/sh
+
+# Strict script
+set -e
+set -u
+
+# Global variables
+HOST=false
+ROUTER=false
+
+# Get options passed by user
+getoption () {
+    if [ $# -ge 1 ]; then
+        FIRST_OPTION="$1"
+    else
+		usage
+		exit 1
+    fi
+    case "$FIRST_OPTION" in
+		host)
+			HOST=true
+			;;
+		router)
+            ROUTER=true
+            ;;
+		help)
+            usage
+			exit 0
+            ;;
+	esac
+}
+
+usage () {
+	# Display usage
+	echo "Usage: $0 option"
+	echo " option can be:"
+	echo " -host: tuning tips for end-host"
+	echo " -router: tuning tips for router"
+	echo " -help: display this help"
+}
+
+sysctl_atleast () {
+    # Check the sysctl parameter is at least configured to the value
+    # $1: sysctl parameter
+    # $2: recommended value
+    if [ `sysctl -n $1` -lt $2 ]; then
+		echo "$1=\"$2\""
+	fi
+}
+
+sysctl_equal () {
+	# Check the sysctl parameter match (equal) the value
+	# $1: sysctl parameter
+	# $2: recommended value
+	if [ `sysctl -n $1` -ne $2 ]; then
+		echo "$1=\"$2\""
+	fi
+}
+
+if_have_cap () {
+	# Check if the interface have capabilities and if it's enabled return true (0)
+	# $1: if
+	# $2: capability
+    ifconfig -m $1 | egrep -q "capabilities.*$2" && return 0 || return 1
+}
+
+if_is_cap_enabled () {
+	# Check if the interface capability is enabled: return true
+	# $1: if
+	# $2: capability
+	ifconfig -m $1 | egrep -q "options.*$2" && return 0 || return 1
+}
+
+tune () {
+	# Major function that call the others
+	# RO values need to be put in /boot/loader.conf.local
+	# RW values need to be put in /etc/sysctl.conf
+	echo "#==> Start of /boot/loader.conf.local"
+	echo "#TO DO All these values doesn't works here and need to be put in /etc/sysctl.conf"
+	net_nic
+	($ROUTER) && net_forward
+	($ROUTER) && net_inet
+	($ROUTER) && cpu_ht
+	net_netisr
+	# Autombuf tunning avoid the need fo checking them
+	# net_mbuf
+	echo "#<== End of /boot/loader.conf.local"
+	net_netstat
+	echo "#==> To be added to /etc/rc.conf"
+	#Need to replace this part by a list of modules (ichsmb coretemp aesni watchdog?)
+	if grep -q 'Feature.*AESNI' /var/run/dmesg.boot ; then
+		#CPU support, check if not allready loaded
+		if ! kldstat -n aesni 2>&1 | grep -q aesni; then
+			echo "#CPU has AESNI feature, you should load the modules"
+			echo 'kld_list="cryptodev aesni"'
+		fi
+	fi
+	for NIC in `ifconfig -l "ether"`; do
+		#skip loopback interfaces
+        echo $NIC | egrep -q "lo[[:digit:]]" && continue
+		# Check only interface with vlan configured on them
+		if egrep -q "ifconfig_vlan.*${NIC}" /etc/rc.conf; then
+			if if_have_cap ${NIC} VLAN_HWFILTER; then
+				if ! if_is_cap_enabled ${NIC} VLAN_HWFILTER; then
+					echo "${NIC} configured with vlan and support VLAN_HWFILTER"
+					echo " => add the vlanhwfilter option to ifconfig_${NIC} in /etc/rc.conf"
+				fi
+			fi # if_have_cap
+		fi # rc.conf
+		# Router should not have LRO/TSO4/TSO6 enabled
+		if ($ROUTER); then
+			for CAP in LRO TSO4 TSO6; do
+				if_is_cap_enabled ${NIC} ${CAP} && \
+					echo "A router MUST NOT have ${CAP} enabled on forwarding NIC"
+			done
+		fi
+		# Check for virtualized
+		if (${VM_DETECTED}); then
+			if if_have_cap ${NIC} POLLING; then
+				if ! if_is_cap_enabled ${NIC} POLLING; then
+					# http://lists.freebsd.org/pipermail/freebsd-net/2013-May/035626.html
+					echo "In VM, ${NIC} can have better behavior if POLLING was enabled"
+					echo " => Enable polling in /etc/rc.conf.misc"
+				fi
+			fi
+			# need disable hardware assisted features (need to found reference about this tip)
+			for CAP in RXCSUM TXCSUM TSO4 TSO6; do
+            	if_is_cap_enabled ${NIC} ${CAP} && \
+					echo "${NIC} have ${CAP} enabled: Disable it in a VM"
+        	done # end for CAP
+		fi
+	done
+
+}
+
+cpu_ht () {
+	# Check if HyperThreading is enabled
+	grep -q "^FreeBSD/SMP.*SMT" /var/run/dmesg.boot && echo "You should disable HyperThreading"
+}
+
+net_nic () {
+	# NIC drivers tuning
+	# em tuning
+	if ifconfig -l "ether" | egrep -q 'em[[:digit:]]'; then
+		# Need to check if there are not 82542 or 82543 (support 256 max)
+		for VALUE in hw.em.txd hw.em.rxd; do
+			sysctl_equal ${VALUE} 2048
+		done
+		# Disabling limit of rx frame
+		#sysctl_atleast hw.em.rx_process_limit 500
+		sysctl_equal hw.em.rx_process_limit -1
+		# Increasing interrupt delay is bad for a router because it add latency
+		# http://www.intel.com/design/network/applnots/ap450.htm
+		if ! ($ROUTER); then
+			for VALUE in hw.em.rx_abs_int_delay hw.em.tx_abs_int_delay; do
+            	sysctl_equal ${VALUE} 1024
+        	done
+			for VALUE in hw.em.rx_int_delay hw.em.tx_int_delay; do
+            	sysctl_equal ${VALUE} 512
+        	done
+		fi
+	fi
+	# igb tuning
+	if ifconfig -l "ether" | egrep -q 'igb[[:digit:]]'; then
+		for VALUE in hw.igb.txd hw.igb.rxd; do
+            sysctl_equal ${VALUE} 2048
+    	done
+		# http://wiki.freebsd.org/NetworkPerformanceTuning
+		sysctl_atleast hw.igb.max_interrupt_rate 32000
+		# Need mbuf be increased if rx_process limit increased?	
+		#sysctl_atleast hw.igb.rx_process_limit 500
+		# Disabling limit of rx frame
+		sysctl_equal hw.igb.rx_process_limit -1
+		# Default kern.ipc.nmbclusters is too small for multiple igb card and multicore
+		# Need to add a test [ `sysctl -n hw.ncpu` -gt 1 ] and arch (i386 don't like too much)
+		[ `sysctl -n hw.ncpu` -ge 4 ] && sysctl_atleast kern.ipc.nmbclusters 262144
+    fi
+	# ixgbe tuning
+	if ifconfig -l "ether" | egrep -q 'ix[[:digit:]]'; then
+	# source: README in drivers source
+	#	 When using the ixgbe driver with RSS autoconfigured based on the number of
+  	# cores (the default setting) and that number is larger than 4, increase the
+ 	# memory resources allocated for the mbuf pool as follows:
+		# Warning: Where to put this valuedepends if drivers is a module or in kernel
+		if [ `sysctl -n hw.ncpu` -ge 4 ]; then
+			#loader.conf ?
+			sysctl_atleast kern.ipc.nmbclusters 262144
+			#sysctl.conf ?
+ 			sysctl_atleast kern.ipc.nmbjumbop 262144
+		fi
+	fi
+	# General
+	# default value of send interface queue length
+	# If em or igb were tunned, need to change this too
+	# http://lists.freebsd.org/pipermail/freebsd-net/2012-July/032712.html	
+	sysctl_atleast net.link.ifqmaxlen 10240	
+
+	# cxgbe (Chelsio) tuning
+	if ifconfig -l "ether" | egrep -q 'cxl[[:digit:]]'; then
+		# source: http://bsdrp.net/documentation/examples/forwarding_performance_lab_of_a_hp_proliant_dl360p_gen8_with_10-gigabit_with_10-gigabit_chelsio_t540-cr
+		# If ncpu=8 and drivers is using 8 queue (default), should reduce the NIC queue to 4
+		if [  `sysctl -n hw.ncpu` -eq 8 ]; then
+			[ `sysctl -n dev.cxl.0.nrxq` -eq 8 ] && echo 'echo hw.cxgbe.nrxq10g="4" >> /boot/loader.conf.local'
+			[ `sysctl -n dev.cxl.0.ntxq` -eq 8 ] && echo 'echo hw.cxgbe.ntxq10g="4" >> /boot/loader.conf.local'
+		fi
+	fi
+}
+
+net_netstat () {
+	# Analysing netstat -m output and provide advice regarding the result
+	echo "TODO: netstat"
+}
+
+net_forward () {
+	# http://wiki.freebsd.org/NetworkPerformanceTuning
+	sysctl_equal net.inet.ip.forwarding 1
+	if [ `sysrc -n ipsec_enable` == "YES" ]; then
+		sysctl_equal net.inet.ip.fastforwarding 0
+		echo "IPSec configuration detected"
+		echo "Check if your hardware support one of these crypto accelerator modules:"
+		echo " aesni(4), glxsb(4), hifn(4), ipsec(4), padlock(4), safe(4) or ubsec(4)"
+	fi
+}
+
+net_inet () {
+	# http://wiki.freebsd.org/NetworkPerformanceTuning
+	for VALUE in net.inet.raw.maxdgram net.inet.raw.recvspace; do
+        sysctl_atleast ${VALUE} 16384
+    done
+	for VALUE in net.inet.ip.redirect; do
+        sysctl_equal ${VALUE} 0
+    done
+}
+
+net_netisr () {
+	# http://wiki.freebsd.org/NetworkPerformanceTuning
+	sysctl_atleast net.route.netisr_maxqlen 2048
+}
+
+net_mbuf () {
+	# kern.ipc.nmbclusters must be increased if multiple igb (man igb)
+	# Need to calculate (regarding RAM size) this value
+	# Does vm.kmem_size should be upgraded too ?
+	# igb loads 8 rings, each of 1024 per NIC
+	sysctl_atleast kern.ipc.nmbclusters 262144
+	echo "On the following output, with all your NIC already configured"
+	echo "  check the current and total"
+	netstat -m | grep "mbuf clusters in use"
+}
+
+
+
+timecounter () {
+	# Are the timecounter tuning usefull ?
+	TIMECOUTER_CHOICE=`sysctl -n sysctl kern.timecounter.choice`
+	if echo "${TIMECOUTER_CHOICE}" | grep -q "HPET"	; then
+		sysctl -n kern.timecounter.hardware | grep -q HPET || \
+			echo "sysctl kern.timecounter.hardware=HPET"
+	fi
+}
+###################
+## Main function ##
+###################
+
+getoption $*
+#system_inventory
+# Look for VM environnement
+sysctl -n kern.vm_guest | grep -q -v "none" && VM_DETECTED=true || VM_DETECTED=false
+tune
+echo "Done!"