diff --git a/distribution/src/dist/usr/lib/systemd/system/openfire.service b/distribution/src/dist/usr/lib/systemd/system/openfire.service
index 88b2596030..8a7fb98be5 100644
--- a/distribution/src/dist/usr/lib/systemd/system/openfire.service
+++ b/distribution/src/dist/usr/lib/systemd/system/openfire.service
@@ -12,6 +12,15 @@ ExecStart=/bin/bash -c '/usr/share/openfire/bin/openfire.sh ${DAEMON_OPTS}'
 Restart=on-failure
 RuntimeDirectory=openfire
 
+# Specify resource limits in the slice
+Slice=openfire.slice
+# We expect a lot of connections from many clients so increase limit of file descriptiors
+LimitNOFILE=50000
+# The Openfire is less important for CPU than system vital services
+Nice=5
+# If not enough RAM then kill the Openfire first to preserve system vital services
+OOMScoreAdjust=-100
+
 [Install]
 WantedBy=multi-user.target
 Alias=xmpp.service
diff --git a/distribution/src/dist/usr/lib/systemd/system/openfire.slice b/distribution/src/dist/usr/lib/systemd/system/openfire.slice
new file mode 100644
index 0000000000..eef22a5749
--- /dev/null
+++ b/distribution/src/dist/usr/lib/systemd/system/openfire.slice
@@ -0,0 +1,5 @@
+[Slice]
+#MemoryAccounting=yes
+#MemoryMax=95%
+#CPUQuota=95%
+#CPUAccounting=yes