From 6772dd503d978d782115415b6f3db701d1410496 Mon Sep 17 00:00:00 2001 From: Ravi Gummadi Date: Thu, 2 Mar 2017 12:05:41 -0500 Subject: [PATCH] Cap the number of worker processes Users can configure the number of worker processes. However when it's not specified the calculated number of workers can get too large on hosts with a large number of CPUs. Change-Id: Ieb1afbd5c872cc4a991b51287b57404b8932fafa --- defaults/main.yml | 4 ++-- .../capping_ironic_wsgi_processes-6fa7306fc3c29de7.yaml | 6 ++++++ 2 files changed, 8 insertions(+), 2 deletions(-) create mode 100644 releasenotes/notes/capping_ironic_wsgi_processes-6fa7306fc3c29de7.yaml diff --git a/defaults/main.yml b/defaults/main.yml index 40bf0650..6eb46d8e 100644 --- a/defaults/main.yml +++ b/defaults/main.yml @@ -223,8 +223,8 @@ ironic_service_user_name: "ironic" # Apache settings ironic_wsgi_threads: 1 -_ironic_wsgi_processes: "{{ ansible_processor_vcpus | default(1) // 4 }}" -ironic_wsgi_processes: "{{ (_ironic_wsgi_processes | int > 1) | ternary(_ironic_wsgi_processes, 1) }}" +ironic_wsgi_processes_max: 16 +ironic_wsgi_processes: "{{ [[ansible_processor_vcpus|default(4) // 4, 1] | max, ironic_wsgi_processes_max] | min }}" ### OpenStack Services to integrate with diff --git a/releasenotes/notes/capping_ironic_wsgi_processes-6fa7306fc3c29de7.yaml b/releasenotes/notes/capping_ironic_wsgi_processes-6fa7306fc3c29de7.yaml new file mode 100644 index 00000000..cc5982b0 --- /dev/null +++ b/releasenotes/notes/capping_ironic_wsgi_processes-6fa7306fc3c29de7.yaml @@ -0,0 +1,6 @@ +--- +features: + - Capping the default value for the variable ``ironic_wsgi_processes`` + to 16 when the user doesn't configure this variable. Default value + is one fourth the number of vCPUs available on the machine with a + capping value of 16.