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Diffstat (limited to 'ci/envs/host-setup1.sh')
-rwxr-xr-x | ci/envs/host-setup1.sh | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/ci/envs/host-setup1.sh b/ci/envs/host-setup1.sh new file mode 100755 index 000000000..3d2de6ddf --- /dev/null +++ b/ci/envs/host-setup1.sh @@ -0,0 +1,76 @@ +#!/bin/bash + +############################################################################## +## Copyright (c) 2015 Intel Corp. +## +## All rights reserved. This program and the accompanying materials +## are made available under the terms of the Apache License, Version 2.0 +## which accompanies this distribution, and is available at +## http://www.apache.org/licenses/LICENSE-2.0 +############################################################################### + +source host-config + + +############################## +# Create 1GB pages for guest # +############################## + +hugepage_size=`cat /proc/meminfo |grep Hugepagesize |tr -s " "| cut -f 2 -d " "` +if [[ $hugepage_size -ne 1048576 ]] +then + echo "Need 1G huge page support for performance benefit" + exit 1 +fi + +mkdir -p /mnt/hugetlbfs-1g +mount -t hugetlbfs hugetlbfs /mnt/hugetlbfs-1g -osize=1G + +hugepage_dir="/sys/devices/system/node/node${numa_node}/hugepages/hugepages-1048576kB/nr_hugepages" + +huge_pages+=`cat $hugepage_dir` +echo ${huge_pages} > ${hugepage_dir} + +############################ +# RT optimization # +############################ +# Disable watchdogs to reduce overhead +echo 0 > /proc/sys/kernel/watchdog +echo 0 > /proc/sys/kernel/nmi_watchdog + +# Change RT priority of ksoftirqd and rcuc kernel threads on isolated CPUs +i=0 +for c in `echo $host_isolcpus | sed 's/,/ /g'` ; do + tid=`pgrep -a ksoftirq | grep "ksoftirqd/${c}$" | cut -d ' ' -f 1` + chrt -fp 2 ${tid} + + tid=`pgrep -a rcuc | grep "rcuc/${c}$" | cut -d ' ' -f 1` + chrt -fp 3 ${tid} + + cpu[$i]=${c} + i=`expr $i + 1` +done + +# Change RT priority of rcub kernel threads +for tid in `pgrep -a rcub | cut -d ' ' -f 1` ; do + chrt -fp 3 ${tid} +done + +# Disable RT throttling +echo -1 > /proc/sys/kernel/sched_rt_period_us +echo -1 > /proc/sys/kernel/sched_rt_runtime_us + +# Reroute interrupts bound to isolated CPUs to CPU 0 +for irq in /proc/irq/* ; do + if [ -d ${irq} ] && ! grep - ${irq}/smp_affinity_list > /dev/null ; then + al=`cat ${irq}/smp_affinity_list` + if [[ ${cpu[*]} =~ ${al} ]] ; then + echo 0 > ${irq}/smp_affinity_list + fi + fi +done + +# Change the iptable so that we can ssh to the guest remotely +iptables -I INPUT -p tcp --dport 5555 -j ACCEPT +# TODO: download guest disk image from artifactory + |