diff --git a/doc/source/gerrit.rst b/doc/source/gerrit.rst
index c41179deef..3f1b602c2a 100644
--- a/doc/source/gerrit.rst
+++ b/doc/source/gerrit.rst
@@ -567,3 +567,18 @@ must follow that steps:
    a change, you can delete them with following query::
 
      delete from change_messages where author_id={account-id} and change_id={change-id};
+
+Generating a Thread Dump for Debugging
+--------------------------------------
+
+We removed the Java Melody plugin the wake of the Log4Shell vulnerability.
+This removed an easy way to acquire a thread dump but dumping threads is
+still possible with java command line tools. You may find yourself wanting
+to do this if Gerrit is suffering from poor performance or you are trying to
+debug odd Gerrit behavior.
+
+To run jstack and produce a thread dump do::
+
+  review02# docker exec -it gerrit-compose_gerrit_1 bash
+  gerrit@review02:/$ ps -ef | grep java # find the Gerrit java process PID
+  gerrit@review02:/$ jstack $PID > /tmp/dump.yearmonthday