retrace: tune up PostgreSQL

roles/abrt/faf-local/handlers/main.yml

@@ -1,3 +1,7 @@
 ---
 - name: restart httpd
   service: name=httpd state=restarted
+
+- name: restart postgresql
+  service: name=postgresql
+           state=restarted

roles/abrt/faf-local/tasks/setup_db.yml

@@ -1,4 +1,67 @@
 ---
+- name: set max_connections for PostgreSQL
+  lineinfile:
+    path: /var/lib/pgsql/data/postgresql.conf
+    regexp: '^max_connections ='
+    line: 'max_connections = 150'
+  notify: restart postgresql
+
+- name: set shared_buffers for PostgreSQL
+  lineinfile:
+    path: /var/lib/pgsql/data/postgresql.conf
+    regexp: '^shared_buffers ='
+    line: 'shared_buffers = 33536MB'
+  notify: restart postgresql
+
+- name: set effective_cache_size for PostgreSQL
+  lineinfile:
+    path: /var/lib/pgsql/data/postgresql.conf
+    regexp: '^effective_cache_size ='
+    line: 'effective_cache_size = 100608MB'
+  notify: restart postgresql
+
+- name: set work_mem for PostgreSQL
+  lineinfile:
+    path: /var/lib/pgsql/data/postgresql.conf
+    regexp: '^work_mem ='
+    line: 'work_mem = 114MB'
+  notify: restart postgresql
+
+- name: set maintenance_work_mem for PostgreSQL
+  lineinfile:
+    path: /var/lib/pgsql/data/postgresql.conf
+    regexp: '^maintenance_work_mem ='
+    line: 'maintenance_work_mem = 2GB'
+  notify: restart postgresql
+
+- name: set checkpoint_segments for PostgreSQL
+  lineinfile:
+    path: /var/lib/pgsql/data/postgresql.conf
+    regexp: '^checkpoint_segments ='
+    line: 'checkpoint_segments = 32'
+  notify: restart postgresql
+
+- name: set checkpoint_completion_target for PostgreSQL
+  lineinfile:
+    path: /var/lib/pgsql/data/postgresql.conf
+    regexp: '^checkpoint_completion_target ='
+    line: 'checkpoint_completion_target = 0.9'
+  notify: restart postgresql
+
+- name: set wal_buffers for PostgreSQL
+  lineinfile:
+    path: /var/lib/pgsql/data/postgresql.conf
+    regexp: '^wal_buffers ='
+    line: 'wal_buffers = 16MB'
+  notify: restart postgresql
+
+- name: set default_statistics_target for PostgreSQL
+  lineinfile:
+    path: /var/lib/pgsql/data/postgresql.conf
+    regexp: '^default_statistics_target ='
+    line: 'default_statistics_target = 100'
+  notify: restart postgresql
+
 - name: drop faf database
   postgresql_db: name=faf
                  owner=postgres