commit 7861716d2315606b03c4126505d6b158640218aa
Author: Felix Yan <felixonmars@archlinux.org>
Date:   Sat Nov 7 13:53:09 2015 +0800

    Add monotonic as an alternative to Monotime

diff --git a/docs/index.rst b/docs/index.rst
index e4a4d80..14f9af6 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -100,6 +100,8 @@ the following optional packages may be useful:
 * `Monotime <https://pypi.python.org/pypi/Monotime>`_ adds support for
   a monotonic clock, which improves reliability in environments
   where clock adjustments are frequent.  No longer needed in Python 3.3.
+* `monotonic <https://pypi.python.org/pypi/monotonic>`_ adds support for
+  a monotonic clock. Alternative to Monotime.  No longer needed in Python 3.3.
 
 **Platforms**: Tornado should run on any Unix-like platform, although
 for the best performance and scalability only Linux (with ``epoll``)
diff --git a/tornado/platform/auto.py b/tornado/platform/auto.py
index fc40c9d..449b634 100644
--- a/tornado/platform/auto.py
+++ b/tornado/platform/auto.py
@@ -47,8 +47,13 @@ try:
 except ImportError:
     pass
 try:
-    from time import monotonic as monotonic_time
+    # monotonic can provide a monotonic function in versions of python before
+    # 3.3, too.
+    from monotonic import monotonic as monotonic_time
 except ImportError:
-    monotonic_time = None
+    try:
+        from time import monotonic as monotonic_time
+    except ImportError:
+        monotonic_time = None
 
 __all__ = ['Waker', 'set_close_exec', 'monotonic_time']
diff --git a/tox.ini b/tox.ini
index 82b156d..6f74a74 100644
--- a/tox.ini
+++ b/tox.ini
@@ -85,7 +85,7 @@ deps =
      {py2,py27,pypy,py3,py33}-full: singledispatch
      py33-asyncio: asyncio
      trollius: trollius
-     py2-monotonic: Monotime
+     py2-monotonic: monotonic
      sphinx: sphinx
      sphinx: sphinx_rtd_theme