From 9c2e0b81d5143c421cb1c36437841cd556ad410e Mon Sep 17 00:00:00 2001
From: Doug Szumski <doug@stackhpc.com>
Date: Tue, 25 Sep 2018 11:03:16 +0000
Subject: [PATCH] Support configuring Monasca Persister performance

On a single node deployment, the Monasca persister can
limit the rate at which Monasca can persist metrics to
InfluxDB. Increasing the thread count can remove this
bottle neck.

Partially-Implements: blueprint monasca-roles
Change-Id: I763a5ae6aa8c8ab3bf766ab5b58c386da74a188b
---
 ansible/roles/monasca/defaults/main.yml                         | 1 +
 .../roles/monasca/templates/monasca-persister/persister.conf.j2 | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/ansible/roles/monasca/defaults/main.yml b/ansible/roles/monasca/defaults/main.yml
index a95acc25a3..8e80bdb5ea 100644
--- a/ansible/roles/monasca/defaults/main.yml
+++ b/ansible/roles/monasca/defaults/main.yml
@@ -123,6 +123,7 @@ monasca_periodic_notifications_period: 60
 # the total number of threads across all instances of a service does not
 # exceed the Kafka topic partition count.
 monasca_log_pipeline_threads: 2
+monasca_metric_pipeline_threads: 2
 
 ####################
 # Docker
diff --git a/ansible/roles/monasca/templates/monasca-persister/persister.conf.j2 b/ansible/roles/monasca/templates/monasca-persister/persister.conf.j2
index 2610c5b49f..ac0681a4dd 100644
--- a/ansible/roles/monasca/templates/monasca-persister/persister.conf.j2
+++ b/ansible/roles/monasca/templates/monasca-persister/persister.conf.j2
@@ -17,7 +17,7 @@ num_processors = 1
 [kafka_metrics]
 uri = {{ monasca_kafka_servers }}
 topic = {{ monasca_metrics_topic }}
-num_processors = 1
+num_processors = {{ monasca_metric_pipeline_threads }}
 
 [zookeeper]
 uri = {{ monasca_zookeeper_servers }}