Document that we don't recommend multiple judgedaemons on a single machine

eldering · eldering · commit eb33231c4cf4 · 2025-07-05T22:00:04.000+02:00
Closes: #2277
diff --git a/doc/manual/install-judgehost.rst b/doc/manual/install-judgehost.rst
@@ -19,6 +19,10 @@ System requirements
 * A TCP/IP network which connects the DOMserver and the judgehosts.
   The machines only need HTTP(S) access to the DOMserver.
 
+For consistent timing, we strongly recommend to only run a single
+judgedaemon per physical machine.
+Running too many judgehost VMs on a single machine can also cause Linux kernel issues,
+see `issue #2277 <https://github.com/DOMjudge/domjudge/issues/2277>`_.
 
 .. _judgehost_software:
 
