diff --git a/roles/koschei/backend/templates/config-backend.cfg.j2 b/roles/koschei/backend/templates/config-backend.cfg.j2
index ed48dd3e56..479d2c1935 100644
--- a/roles/koschei/backend/templates/config-backend.cfg.j2
+++ b/roles/koschei/backend/templates/config-backend.cfg.j2
@@ -76,6 +76,9 @@ config = {
             "memory_limit": 4 * 1024**3,
         },
     },
+    "priorities": {
+        "calculation_interval": 600,  # seconds
+    },
     "logging": {
         "loggers": {
             "": {
diff --git a/roles/koschei/backend/templates/cron-db-cleanup.j2 b/roles/koschei/backend/templates/cron-db-cleanup.j2
index d5238a9af1..6a870363fe 100644
--- a/roles/koschei/backend/templates/cron-db-cleanup.j2
+++ b/roles/koschei/backend/templates/cron-db-cleanup.j2
@@ -2,4 +2,4 @@ SHELL=/bin/bash
 MAILTO=sysadmin-koschei-members@fedoraproject.org
 0 3 * * *   koschei    koschei-admin cleanup --older-than 6 >/dev/null
 #0 4,10,16,22 * * *   koschei    psql -h {{ koschei_pgsql_hostname }} -d koschei -U koscheiadmin <<< 'VACUUM ANALYZE package; VACUUM FULL ANALYZE package;'
-*/15 * * * *   koschei   psql -h {{ koschei_pgsql_hostname }} -d koschei -U koscheiadmin <<< 'VACUUM ANALYZE package' >/dev/null
+*/5 * * * *   koschei   psql -h {{ koschei_pgsql_hostname }} -d koschei -U koscheiadmin <<< 'VACUUM ANALYZE package' >/dev/null