https://bugs.gentoo.org/727934
--- a/tornado/test/simple_httpclient_test.py
+++ b/tornado/test/simple_httpclient_test.py
@@ -293,9 +293,9 @@ class SimpleHTTPClientTestMixin(object):
 
     @skipOnTravis
     def test_request_timeout(self: typing.Any):
-        timeout = 0.1
+        timeout = 5
         if os.name == "nt":
-            timeout = 0.5
+            timeout = 10
 
         with self.assertRaises(HTTPTimeoutError):
             self.fetch("/trigger?wake=false", request_timeout=timeout, raise_error=True)