diff --git a/zuul.d/manila-tempest-jobs.yaml b/zuul.d/manila-tempest-jobs.yaml
index d0d2fe6..00e3b09 100644
--- a/zuul.d/manila-tempest-jobs.yaml
+++ b/zuul.d/manila-tempest-jobs.yaml
@@ -38,6 +38,7 @@
         tls-proxy: true
       devstack_localrc:
         USE_PYTHON3: true
+        MYSQL_REDUCE_MEMORY: True
         MANILA_USE_DOWNGRADE_MIGRATIONS: true
         MANILA_INSTALL_TEMPEST_PLUGIN_SYSTEMWIDE: false
         MANILA_ALLOW_NAS_SERVER_PORTS_ON_HOST: true