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#!/bin/bash | |
# | |
# Copyright (c) 2015, Intel Corporation | |
# | |
# Redistribution and use in source and binary forms, with or without | |
# modification, are permitted provided that the following conditions are met: | |
# | |
# * Redistributions of source code must retain the above copyright notice, | |
# this list of conditions and the following disclaimer. | |
# * 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. | |
# * Neither the name of Intel Corporation nor the names of its contributors | |
# may be used to endorse or promote products derived from this software | |
# without specific prior written permission. | |
# | |
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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. | |
# | |
# Affinitize interrupts to cores | |
# | |
# typical usage is (as root): | |
# set_irq_affinity -x local eth1 <eth2> <eth3> | |
# | |
# to get help: | |
# set_irq_affinity | |
usage() | |
{ | |
echo | |
echo "Usage: $0 [-x|-X] {all|local|remote|one|custom} [ethX] <[ethY]>" | |
echo " options: -x Configure XPS as well as smp_affinity" | |
echo " options: -X Disable XPS but set smp_affinity" | |
echo " options: {remote|one} can be followed by a specific node number" | |
echo " Ex: $0 local eth0" | |
echo " Ex: $0 remote 1 eth0" | |
echo " Ex: $0 custom eth0 eth1" | |
echo " Ex: $0 0-7,16-23 eth0" | |
echo | |
exit 1 | |
} | |
usageX() | |
{ | |
echo "options -x and -X cannot both be specified, pick one" | |
exit 1 | |
} | |
if [ "$1" == "-x" ]; then | |
XPS_ENA=1 | |
shift | |
fi | |
if [ "$1" == "-X" ]; then | |
if [ -n "$XPS_ENA" ]; then | |
usageX | |
fi | |
XPS_DIS=2 | |
shift | |
fi | |
if [ "$1" == -x ]; then | |
usageX | |
fi | |
if [ -n "$XPS_ENA" ] && [ -n "$XPS_DIS" ]; then | |
usageX | |
fi | |
if [ -z "$XPS_ENA" ]; then | |
XPS_ENA=$XPS_DIS | |
fi | |
num='^[0-9]+$' | |
# Vars | |
AFF=$1 | |
shift | |
case "$AFF" in | |
remote) [[ $1 =~ $num ]] && rnode=$1 && shift ;; | |
one) [[ $1 =~ $num ]] && cnt=$1 && shift ;; | |
all) ;; | |
local) ;; | |
custom) ;; | |
[0-9]*) ;; | |
-h|--help) usage ;; | |
"") usage ;; | |
*) IFACES=$AFF && AFF=all ;; # Backwards compat mode | |
esac | |
# append the interfaces listed to the string with spaces | |
while [ "$#" -ne "0" ] ; do | |
IFACES+=" $1" | |
shift | |
done | |
# for now the user must specify interfaces | |
if [ -z "$IFACES" ]; then | |
usage | |
exit 1 | |
fi | |
# support functions | |
set_affinity() | |
{ | |
VEC=$core | |
if [ $VEC -ge 32 ] | |
then | |
MASK_FILL="" | |
MASK_ZERO="00000000" | |
let "IDX = $VEC / 32" | |
for ((i=1; i<=$IDX;i++)) | |
do | |
MASK_FILL="${MASK_FILL},${MASK_ZERO}" | |
done | |
let "VEC -= 32 * $IDX" | |
MASK_TMP=$((1<<$VEC)) | |
MASK=$(printf "%X%s" $MASK_TMP $MASK_FILL) | |
else | |
MASK_TMP=$((1<<$VEC)) | |
MASK=$(printf "%X" $MASK_TMP) | |
fi | |
printf "%s" $MASK > /proc/irq/$IRQ/smp_affinity | |
printf "%s %d %s -> /proc/irq/$IRQ/smp_affinity\n" $IFACE $core $MASK | |
case "$XPS_ENA" in | |
1) | |
printf "%s %d %s -> /sys/class/net/%s/queues/tx-%d/xps_cpus\n" $IFACE $core $MASK $IFACE $((n-1)) | |
printf "%s" $MASK > /sys/class/net/$IFACE/queues/tx-$((n-1))/xps_cpus | |
;; | |
2) | |
MASK=0 | |
printf "%s %d %s -> /sys/class/net/%s/queues/tx-%d/xps_cpus\n" $IFACE $core $MASK $IFACE $((n-1)) | |
printf "%s" $MASK > /sys/class/net/$IFACE/queues/tx-$((n-1))/xps_cpus | |
;; | |
*) | |
esac | |
} | |
# Allow usage of , or - | |
# | |
parse_range () { | |
RANGE=${@//,/ } | |
RANGE=${RANGE//-/..} | |
LIST="" | |
for r in $RANGE; do | |
# eval lets us use vars in {#..#} range | |
[[ $r =~ '..' ]] && r="$(eval echo {$r})" | |
LIST+=" $r" | |
done | |
echo $LIST | |
} | |
# Affinitize interrupts | |
# | |
setaff() | |
{ | |
CORES=$(parse_range $CORES) | |
ncores=$(echo $CORES | wc -w) | |
n=1 | |
# this script only supports interrupt vectors in pairs, | |
# modification would be required to support a single Tx or Rx queue | |
# per interrupt vector | |
queues="${IFACE}-.*TxRx" | |
irqs=$(grep "$queues" /proc/interrupts | cut -f1 -d:) | |
[ -z "$irqs" ] && irqs=$(grep $IFACE /proc/interrupts | cut -f1 -d:) | |
[ -z "$irqs" ] && irqs=$(for i in `ls -Ux /sys/class/net/$IFACE/device/msi_irqs` ;\ | |
do grep "$i:.*TxRx" /proc/interrupts | grep -v fdir | cut -f 1 -d : ;\ | |
done) | |
[ -z "$irqs" ] && echo "Error: Could not find interrupts for $IFACE" | |
echo "IFACE CORE MASK -> FILE" | |
echo "=======================" | |
for IRQ in $irqs; do | |
[ "$n" -gt "$ncores" ] && n=1 | |
j=1 | |
# much faster than calling cut for each | |
for i in $CORES; do | |
[ $((j++)) -ge $n ] && break | |
done | |
core=$i | |
set_affinity | |
((n++)) | |
done | |
} | |
# now the actual useful bits of code | |
# these next 2 lines would allow script to auto-determine interfaces | |
#[ -z "$IFACES" ] && IFACES=$(ls /sys/class/net) | |
#[ -z "$IFACES" ] && echo "Error: No interfaces up" && exit 1 | |
# echo IFACES is $IFACES | |
CORES=$(</sys/devices/system/cpu/online) | |
[ "$CORES" ] || CORES=$(grep ^proc /proc/cpuinfo | cut -f2 -d:) | |
# Core list for each node from sysfs | |
node_dir=/sys/devices/system/node | |
for i in $(ls -d $node_dir/node*); do | |
i=${i/*node/} | |
corelist[$i]=$(<$node_dir/node${i}/cpulist) | |
done | |
for IFACE in $IFACES; do | |
# echo $IFACE being modified | |
dev_dir=/sys/class/net/$IFACE/device | |
[ -e $dev_dir/numa_node ] && node=$(<$dev_dir/numa_node) | |
[ "$node" ] && [ "$node" -gt 0 ] || node=0 | |
case "$AFF" in | |
local) | |
CORES=${corelist[$node]} | |
;; | |
remote) | |
[ "$rnode" ] || { [ $node -eq 0 ] && rnode=1 || rnode=0; } | |
CORES=${corelist[$rnode]} | |
;; | |
one) | |
[ -n "$cnt" ] || cnt=0 | |
CORES=$cnt | |
;; | |
all) | |
CORES=$CORES | |
;; | |
custom) | |
echo -n "Input cores for $IFACE (ex. 0-7,15-23): " | |
read CORES | |
;; | |
[0-9]*) | |
CORES=$AFF | |
;; | |
*) | |
usage | |
exit 1 | |
;; | |
esac | |
# call the worker function | |
setaff | |
done | |
# check for irqbalance running | |
IRQBALANCE_ON=`ps ax | grep -v grep | grep -q irqbalance; echo $?` | |
if [ "$IRQBALANCE_ON" == "0" ] ; then | |
echo " WARNING: irqbalance is running and will" | |
echo " likely override this script's affinitization." | |
echo " Please stop the irqbalance service and/or execute" | |
echo " 'killall irqbalance'" | |
fi |
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How to persistently set the specific CPU for the Network Adaptor's (the values should be across the reboot) ?
We have been trying by custom systemd script to keep the configuration persistent across the reboot. custom service running perfect. Even it is executing the above script perfectly. But still the node throws wrong CPU set's.
We have added the following lines in our systemd script.
/etc/sriov/set_irq_affinity -x 0,1,32,33 sriov0 /etc/sriov/set_irq_affinity -x 0,1,32,33 sriov1 /etc/sriov/set_irq_affinity -x 0,1,32,33 sriov2 /etc/sriov/set_irq_affinity -x 0,1,32,33 sriov3
Systemd script :
`[Unit]
Description=Sriov Config Service
After=systemd-udevd.service
#Before=kubelet.service
[Service]
#Type=oneshot
ExecStart=/etc/sriov/setup_dpdk_nic.sh
StartLimitInterval=120
StartLimitBurst=3
LimitCORE=infinity
TimeoutStopSec=90
[Install]
WantedBy=multi-user.target`