diff --git a/test/excludes/TestConst.rb b/test/excludes/TestConst.rb
new file mode 100644
index 0000000000..14eea5be3e
--- /dev/null
+++ b/test/excludes/TestConst.rb
@@ -0,0 +1 @@
+exclude :test_redefinition_memory_leak, 'often too expensive'
diff --git a/test/excludes/TestThread.rb b/test/excludes/TestThread.rb
new file mode 100644
index 0000000000..ea7269f7c4
--- /dev/null
+++ b/test/excludes/TestThread.rb
@@ -0,0 +1 @@
+exclude /_stack_size$/, 'often too expensive'