ansible: Change default strategy to mitogen_linear

The default ansible strategy if not set is 'linear'. Using
mitogen_linear results in a significant speed up in runs.

For example, when running the site.yml playbook against
ci-node-el[7-9]-arm64-01 with no other changes between the runs, the
run time goes from ~2 minutes to ~30 seconds.

Change-Id: I47952c2a7d73607248aad71cc6670984aef3804b

diff --git a/automation/ansible/ansible.cfg b/automation/ansible/ansible.cfg
index da6cce2686ec43ed257d9bc5b10cc195e7f6528d..d9a05dc243471bb769d2f8f66e30e1e088ec9f4b 100644 (file)
--- a/automation/ansible/ansible.cfg
+++ b/automation/ansible/ansible.cfg
@@ -205,7 +205,7 @@ remote_user = root
 
 # by default, ansible will use the 'linear' strategy but you may want to try
 # another one
-#strategy = free
+strategy = mitogen_linear
 
 # by default callbacks are not loaded for /bin/ansible, enable this if you
 # want, for example, a notification or logging callback to also apply to