@@ -287,3 +287,35 @@ function set_vm_memory() {

         dynamic-max=${memory}MiB \

         uuid=$vm

 }

+

+function max_vcpus() {

+    local vm_name_label

+

+    vm_name_label="$1"

+

+    local vm

+    local host

+    local cpu_count

+

+    host=$(xe host-list --minimal)

+    vm=$(_vm_uuid "$vm_name_label")

+

+    cpu_count=$(xe host-param-get \

+        param-name=cpu_info \

+        uuid=$host |

+        sed -e 's/^.*cpu_count: \([0-9]*\);.*$/\1/g')

+

+    if [ -z "$cpu_count" ]; then

+        # get dom0's vcpu count

+        cpu_count=$(cat /proc/cpuinfo | grep processor | wc -l)

+    fi

+

+    # Assert cpu_count is not empty

+    [ -n "$cpu_count" ]

+

+    # Assert ithas a numeric nonzero value

+    expr "$cpu_count" + 0

+

+    xe vm-param-set uuid=$vm VCPUs-max=$cpu_count

+    xe vm-param-set uuid=$vm VCPUs-at-startup=$cpu_count

+}

@@ -268,6 +268,9 @@ $THIS_DIR/prepare_guest_template.sh "$GUEST_NAME"

 # Set virtual machine parameters

 set_vm_memory "$GUEST_NAME" "$OSDOMU_MEM_MB"

+# Max out VCPU count for better performance

+max_vcpus "$GUEST_NAME"

+

 # start the VM to run the prepare steps

 xe vm-start vm="$GUEST_NAME"