This patch contains scripts to update the host_isolcpus parameter

to Numa node1 CPU's,binds the qemu process threads to the
host_isolcpu processors and assigns the remaining isolcpus to
run stress tool

Change-Id: I894fd18666c1e9c041776c346b7b95abce808792
Signed-off-by: Shravani <shravani.p@tcs.com>

2 files changed, 26 insertions, 15 deletions

diff --git a/ci/envs/host-config b/ci/envs/host-config
index ce6243ce0..a6beb06b6 100644..100755
--- a/ci/envs/host-config
+++ b/ci/envs/host-config
@@ -1,3 +1,5 @@
+#!/bin/bash
+
 ##############################################################################
 ## Copyright (c) 2015 Intel Corp.
 ##
@@ -7,13 +9,27 @@
 ## http://www.apache.org/licenses/LICENSE-2.0
 ###############################################################################
 
-# Isolated cpus for nfv, must be delimited with ','
-host_isolcpus=3,4
-
 # Number of huge pages to create and on which NUMA node
-numa_node=0
+numa_node=1
 huge_pages=2
 
 # QEMU executable path and number of cpus for guest
 qemu=/usr/libexec/qemu-kvm
 guest_cpus=2
+
+# Isolated cpus for nfv, must be given as a range '-' and Numa node1 CPU's should be considered
+host_isolcpus=`lscpu | grep "NUMA node1 CPU(s)"| awk -F ':' '{print \$2}' | sed 's/[[:space:]]//g'`
+first=$(echo ${host_isolcpus} | cut -f1 -d-)
+last=$(echo ${host_isolcpus} | cut -f2 -d-)
+
+# Bind cpus from host_isolcpus range for QEMU processor threads
+i=0
+while [ ${i} -lt ${guest_cpus} ]; do
+ qemu_cpu[$i]=${first}
+ i=`expr $i + 1`
+ first=`expr $first + 1`
+done
+
+#Isolated cpus from host_isolcpus range to run Stress tool
+stress_isolcpus=${first}-${last}
+echo "Stress tool runs on $stress_isolcpus"
diff --git a/ci/envs/host-run-qemu.sh b/ci/envs/host-run-qemu.sh
index 400e9e306..9cd4b45c2 100755
--- a/ci/envs/host-run-qemu.sh
+++ b/ci/envs/host-run-qemu.sh
@@ -19,7 +19,7 @@ cpumask () {
     printf 0x%x ${m}
 }
 
-qmp_sock="/tmp/qmp-sock-$$"
+qmp_sock="/tmp/qmp-sock"
 
 #${qemu} -smp ${guest_cpus} -monitor unix:${qmp_sock},server,nowait -daemonize \
 #    -cpu host,migratable=off,+invtsc,+tsc-deadline,pmu=off \
@@ -30,25 +30,20 @@ qmp_sock="/tmp/qmp-sock-$$"
 #    -device virtio-net-pci,netdev=guest0 \
 #    -nographic -serial /dev/null -parallel /dev/null
 
-${qemu} -smp ${guest_cpus} -drive file=/root/guest1.qcow2 -daemonize \
+${qemu} -smp ${guest_cpus} -monitor unix:${qmp_sock},server,nowait \
+     -drive file=/root/guest1.qcow2 -daemonize \
      -netdev user,id=net0,hostfwd=tcp:$HOST_IP:5555-:22 \
      -realtime mlock=on -mem-prealloc -enable-kvm -m 1G \
      -mem-path /mnt/hugetlbfs-1g \
      -device virtio-net-pci,netdev=net0 \
 
-i=0
-for c in `echo ${host_isolcpus} | sed 's/,/ /g'` ; do
-    cpu[$i]=${c}
-    i=`expr $i + 1`
-done
-
 threads=`echo "info cpus" | nc -U ${qmp_sock} | grep thread_id | cut -d= -f3`
 
 # Bind QEMU processor threads to RT CPUs
 i=0
 for tid in ${threads} ; do
-    tid=`printf %d ${tid}`  # this is required to get rid of cr at end
-    mask=`cpumask ${cpu[$i]}`
-    taskset -p ${mask} ${tid}
+    new_tid=`echo $tid | sed -e 's/[\r\n]//g'` # this is required to get rid of cr at end
+    mask=`cpumask ${qemu_cpu[$i]}`
+    taskset -p ${mask} ${new_tid}
     i=`expr $i + 1`
 done