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Add support for running multiple n-cpus for performance testing

When using the fake VIRT_DRIVER, we can launch an arbitrary number of
instances, the next step for performance testing is running an arbitrary
number of n-cpus. This can be done with the following settings in your localrc

VIRT_DRIVER=fake
NUMBER_FAKE_NOVA_COMPUTE=50

This can be used for things like measuring load from n-cpu's periodic tasks.

Change-Id: I40e0f05374e2c10c48ea6b8816ef6e7609b3dc80

Joe Gordon authored on 2013/08/02 11:02:01
Showing 2 changed files

lib/nova

History View file @ 2c94ee5

@@ -722,6 +722,11 @@ function start_nova() {
                              # The group **$LIBVIRT_GROUP** is added to the current user in this script.
                              # Use 'sg' to execute nova-compute as a member of the **$LIBVIRT_GROUP** group.
                              screen_it n-cpu "cd $NOVA_DIR && sg $LIBVIRT_GROUP '$NOVA_BIN_DIR/nova-compute --config-file $NOVA_CONF_BOTTOM'"
                     +    elif [[ "$VIRT_DRIVER" = 'fake' ]]; then
                     +       for i in `seq 1 $NUMBER_FAKE_NOVA_COMPUTE`
                     +       do
                     +           screen_it n-cpu "cd $NOVA_DIR && $NOVA_BIN_DIR/nova-compute --config-file $NOVA_CONF_BOTTOM"
                     +       done
                          else
                              screen_it n-cpu "cd $NOVA_DIR && $NOVA_BIN_DIR/nova-compute --config-file $NOVA_CONF_BOTTOM"
                          fi

stackrc

History View file @ 2c94ee5

@@ -187,6 +187,9 @@ case "$VIRT_DRIVER" in
                                  LIBVIRT_GROUP=libvirtd
                              fi
                              ;;
                     +    fake)
                     +        NUMBER_FAKE_NOVA_COMPUTE=${NUMBER_FAKE_NOVA_COMPUTE:-1}
                     +        ;;
                          xenserver)
                              # Xen config common to nova and neutron
                              XENAPI_USER=${XENAPI_USER:-"root"}